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Document and Entity Information Document - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Feb. 28, 2019	Jun. 29, 2018
Entity Information [Line Items]
Entity Registrant Name	ICAHN ENTERPRISES L.P.
Trading Symbol	IEP
Entity Central Index Key	0000813762
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		191,374,372
Entity Small Business	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float (in millions)			$ 1,123
Icahn Enterprises Holdings
Entity Information [Line Items]
Entity Registrant Name	ICAHN ENTERPRISES HOLDINGS L.P.
Entity Central Index Key	0001034563
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		0
Entity Small Business	false
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 2,656	$ 1,164
Cash held at consolidated affiliated partnerships and restricted cash	2,682	747
Investments	8,337	10,015
Due from brokers	664	506
Accounts receivable, net	474	473
Inventories, net	1,779	1,730
Property, plant and equipment, net	4,703	5,186
Goodwill	247	327
Intangible assets, net	501	544
Assets held for sale	333	10,263
Other assets	1,020	846
Total Assets	23,396	31,801
LIABILITIES AND EQUITY
Accounts payable	832	980
Accrued expenses and other liabilities	900	984
Deferred tax liability	676	732
Unrealized loss on derivative contracts	36	1,275
Securities sold, not yet purchased, at fair value	468	1,023
Due to brokers	141	1,057
Liabilities held for sale	112	7,010
Debt	7,326	7,372
Total liabilities	10,491	20,433
Commitments and contingencies (Note 17)
Equity:
Limited partners: Depositary units: 191,366,097 and 173,564,307 units issued and outstanding at December 31, 2018 and 2017, respectively	7,319	5,341
General partner	(790)	(235)
Equity attributable to Icahn Enterprises	6,529	5,106
Equity attributable to non-controlling interests	6,376	6,262
Total equity	12,905	11,368
Total Liabilities and Equity	23,396	31,801
Icahn Enterprises Holdings
ASSETS
Cash and cash equivalents	2,656	1,164
Cash held at consolidated affiliated partnerships and restricted cash	2,682	747
Investments	8,337	10,015
Due from brokers	664	506
Accounts receivable, net	474	473
Inventories, net	1,779	1,730
Property, plant and equipment, net	4,703	5,186
Goodwill	247	327
Intangible assets, net	501	544
Assets held for sale	333	10,263
Other assets	1,052	878
Total Assets	23,428	31,833
LIABILITIES AND EQUITY
Accounts payable	832	980
Accrued expenses and other liabilities	900	984
Deferred tax liability	676	732
Unrealized loss on derivative contracts	36	1,275
Securities sold, not yet purchased, at fair value	468	1,023
Due to brokers	141	1,057
Liabilities held for sale	112	7,010
Debt	7,330	7,377
Total liabilities	10,495	20,438
Commitments and contingencies (Note 17)
Equity:
Limited partners: Depositary units: 191,366,097 and 173,564,307 units issued and outstanding at December 31, 2018 and 2017, respectively	7,421	5,420
General partner	(864)	(287)
Equity attributable to Icahn Enterprises	6,557	5,133
Equity attributable to non-controlling interests	6,376	6,262
Total equity	12,933	11,395
Total Liabilities and Equity	$ 23,428	$ 31,833

Consolidated Balance Sheets (Parentheticals) - shares	Dec. 31, 2018	Dec. 31, 2017
Equity:
Limited partners: Depositary units issued	191,366,097	173,564,307
Limited partners: Depositary units outstanding	191,366,097	173,564,307

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Net sales	$ 10,576	$ 9,306	$ 7,740
Other revenues from operations	647	743	840
Net gain (loss) from investment activities	322	302	(1,373)
Interest and dividend income	148	127	124
Gain on disposition of assets, net	84	2,163	6
Other (loss) income, net	0	(22)	42
Total revenues	11,777	12,619	7,379
Expenses:
Cost of goods sold	8,947	8,258	6,837
Other expenses from operations	529	518	631
Selling, general and administrative	1,386	1,269	1,001
Restructuring	21	4	5
Impairment	92	87	586
Interest expense	524	655	692
Total Expenses	11,499	10,791	9,752
Income (loss) from continuing operations before income tax benefit	278	1,828	(2,373)
Income tax benefit	4	529	88
Income (loss) from continuing operations	282	2,357	(2,285)
Income from discontinued operations	1,764	234	65
Net income (loss)	2,046	2,591	(2,220)
Less: net income (loss) attributable to non-controlling interests	539	161	(1,092)
Net income (loss) attributable to Icahn Enterprises	1,507	2,430	(1,128)
Net income (loss) attributable to Icahn Enterprises
Continuing operations	(213)	2,273	(1,127)
Discontinued operations	1,720	157	(1)
Limited partners	2,063	2,382	(1,106)
General partner	(556)	48	(22)
Net income (loss) attributable to Icahn Enterprises	$ 1,507	$ 2,430	$ (1,128)
Basic income (loss) per LP unit:
Continuing operations	$ (1.16)	$ 13.84	$ (8.07)
Discontinued operations	12.62	0.96	0.00
Basic income (loss) per LP unit	$ 11.46	$ 14.80	$ (8.07)
Basic weighted average LP units outstanding	180	161	137
Diluted income (loss) per LP unit:
Continuing operations	$ (1.16)	$ 13.84	$ (8.07)
Discontinued operations	12.62	0.96	0.00
Diluted income (loss) per LP unit	$ 11.46	$ 14.80	$ (8.07)
Diluted weighted average LP units outstanding	180	161	137
Cash distributions declared per LP unit	$ 7.00	$ 6.00	$ 6.00
Icahn Enterprises Holdings
Revenues:
Net sales	$ 10,576	$ 9,306	$ 7,740
Other revenues from operations	647	743	840
Net gain (loss) from investment activities	322	302	(1,373)
Interest and dividend income	148	127	124
Gain on disposition of assets, net	84	2,163	6
Other (loss) income, net	0	(21)	42
Total revenues	11,777	12,620	7,379
Expenses:
Cost of goods sold	8,947	8,258	6,837
Other expenses from operations	529	518	631
Selling, general and administrative	1,386	1,269	1,001
Restructuring	21	4	5
Impairment	92	87	586
Interest expense	523	654	691
Total Expenses	11,498	10,790	9,751
Income (loss) from continuing operations before income tax benefit	279	1,830	(2,372)
Income tax benefit	4	529	88
Income (loss) from continuing operations	283	2,359	(2,284)
Income from discontinued operations	1,764	234	65
Net income (loss)	2,047	2,593	(2,219)
Less: net income (loss) attributable to non-controlling interests	539	161	(1,092)
Net income (loss) attributable to Icahn Enterprises	1,508	2,432	(1,127)
Net income (loss) attributable to Icahn Enterprises
Continuing operations	(212)	2,275	(1,126)
Discontinued operations	1,720	157	(1)
Limited partners	2,085	2,408	(1,116)
General partner	(577)	24	(11)
Net income (loss) attributable to Icahn Enterprises	$ 1,508	$ 2,432	$ (1,127)

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income (loss)	$ 2,046	$ 2,591	$ (2,220)
Other comprehensive (loss) income, net of tax:
Post-retirement benefits	21	50	18
Hedge instruments	(3)	(1)	3
Translation adjustments and other	(86)	124	(148)
Other comprehensive (loss) income, net of tax	(68)	173	(127)
Comprehensive income (loss)	1,978	2,764	(2,347)
Less: Comprehensive income (loss) attributable to non-controlling interests	532	177	(1,112)
Comprehensive income (loss) attributable to Icahn Enterprises	1,446	2,587	(1,235)
Limited partners
Net income (loss)	2,063	2,382	(1,106)
Other comprehensive (loss) income, net of tax:
Other comprehensive (loss) income, net of tax	(60)	154	(104)
Comprehensive income (loss) attributable to Icahn Enterprises	2,003	2,536	(1,210)
General partner
Net income (loss)	(556)	48	(22)
Other comprehensive (loss) income, net of tax:
Other comprehensive (loss) income, net of tax	(1)	3	(3)
Comprehensive income (loss) attributable to Icahn Enterprises	(557)	51	(25)
Icahn Enterprises Holdings
Net income (loss)	2,047	2,593	(2,219)
Other comprehensive (loss) income, net of tax:
Post-retirement benefits	21	50	18
Hedge instruments	(3)	(1)	3
Translation adjustments and other	(86)	124	(148)
Other comprehensive (loss) income, net of tax	(68)	173	(127)
Comprehensive income (loss)	1,979	2,766	(2,346)
Less: Comprehensive income (loss) attributable to non-controlling interests	532	177	(1,112)
Comprehensive income (loss) attributable to Icahn Enterprises	1,447	2,589	(1,234)
Icahn Enterprises Holdings \| Limited partners
Net income (loss)	2,085	2,408	(1,116)
Other comprehensive (loss) income, net of tax:
Other comprehensive (loss) income, net of tax	(60)	155	(106)
Comprehensive income (loss) attributable to Icahn Enterprises	2,025	2,563	(1,222)
Icahn Enterprises Holdings \| General partner
Net income (loss)	(577)	24	(11)
Other comprehensive (loss) income, net of tax:
Other comprehensive (loss) income, net of tax	(1)	2	(1)
Comprehensive income (loss) attributable to Icahn Enterprises	$ (578)	$ 26	$ (12)

Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Icahn Enterprises Holdings	Limited partners	Limited partners Icahn Enterprises Holdings	General partner	General partner Icahn Enterprises Holdings	Total Partners' Equity	Total Partners' Equity Icahn Enterprises Holdings	Non-controlling Interests	Non-controlling Interests Icahn Enterprises Holdings
Equity at Dec. 31, 2015	$ 10,033	$ 10,057	$ 4,244	$ 4,310	$ (257)	$ (299)	$ 3,987	$ 4,011	$ 6,046	$ 6,046
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	(2,220)	(2,219)	(1,106)	(1,116)	(22)	(11)	(1,128)	(1,127)	(1,092)	(1,092)
Other comprehensive income	(127)	(127)	(104)	(106)	(3)	(1)	(107)	(107)	(20)	(20)
Partnership distributions	(103)	(103)	(101)	(102)	(2)	(1)	(103)	(103)	0	0
Partnership contributions	1	1	0	0	1	1	1	1	0	0
Investment segment contributions	505	505	0	0	0	0	0	0	505	505
Investment segment distributions	(7)	(7)	0	0	0	0	0	0	(7)	(7)
Dividends and distributions to non-controlling interests in subsidiaries	(86)	(86)	0	0	0	0	0	0	(86)	(86)
LP unit issuance	35	35	35	35	0	0	35	35	0	0
Changes in subsidiary equity and other	(14)	(14)	(520)	(525)	(11)	(6)	(531)	(531)	517	517
Equity at Dec. 31, 2016	8,017	8,042	2,448	2,496	(294)	(317)	2,154	2,179	5,863	5,863
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	2,591	2,593	2,382	2,408	48	24	2,430	2,432	161	161
Other comprehensive income	173	173	154	155	3	2	157	157	16	16
Partnership distributions	(81)	(81)	(79)	(80)	(2)	(1)	(81)	(81)	0	0
Partnership contributions	612	612	600	606	12	6	612	612	0	0
Investment segment contributions	600	600	0	0	0	0	0	0	600	600
Dividends and distributions to non-controlling interests in subsidiaries	(92)	(92)	0	0	0	0	0	0	(92)	(92)
Cumulative effect adjustment from adoption of accounting principal	(47)	(47)	(46)	(47)	(1)	0	(47)	(47)	0	0
Changes in subsidiary equity and other	(405)	(405)	(118)	(118)	(1)	(1)	(119)	(119)	(286)	(286)
Equity at Dec. 31, 2017	11,368	11,395	5,341	5,420	(235)	(287)	5,106	5,133	6,262	6,262
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	2,046	2,047	2,063	2,085	(556)	(577)	1,507	1,508	539	539
Other comprehensive income	(68)	(68)	(60)	(60)	(1)	(1)	(61)	(61)	(7)	(7)
Partnership distributions	(97)	(97)	(95)	(96)	(2)	(1)	(97)	(97)	0	0
Investment segment contributions	310	310	0	0	0	0	0	0	310	310
Dividends and distributions to non-controlling interests in subsidiaries	(153)	(153)	0	0	0	0	0	0	(153)	(153)
Cumulative effect adjustment from adoption of accounting principal	(29)	(29)	(28)	(29)	(1)	0	(29)	(29)	0	0
Changes in subsidiary equity and other	(472)	(472)	98	101	5	2	103	103	(575)	(575)
Equity at Dec. 31, 2018	$ 12,905	$ 12,933	$ 7,319	$ 7,421	$ (790)	$ (864)	$ 6,529	$ 6,557	$ 6,376	$ 6,376

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ 2,046	$ 2,591	$ (2,220)
Income from discontinued operations	(1,764)	(234)	(65)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net loss (gain) from securities transactions	476	(2,273)	(266)
Purchases of securities	(4,810)	(781)	(2,059)
Proceeds from sales of securities	6,763	2,413	7,630
Purchases to cover securities sold, not yet purchased	(1,083)	(1,078)	(361)
Proceeds from securities sold, not yet purchased	1,077	1,222	616
Changes in receivables and payables relating to securities transactions	(1,195)	(1,704)	(4,828)
Gain on disposition of assets, net	(84)	(2,163)	(6)
Depreciation and amortization	447	474	526
Impairment	92	87	586
Deferred taxes	(19)	(557)	(134)
Other, net	123	(27)	58
Accounts receivable, net	45	(72)	(58)
Inventories, net	(86)	(185)	(86)
Other assets	(208)	20	315
Accounts payable	(61)	132	28
Unrealized loss on derivative contracts	(1,239)	136	1,106
Accrued expenses and other liabilities	(84)	(123)	(403)
Net cash provided by (used in) operating activities from continuing operations	436	(2,122)	379
Net cash provided by operating activities from discontinued operations	479	694	839
Net cash provided by (used in) operating activities	915	(1,428)	1,218
Cash flows from investing activities:
Capital expenditures	(272)	(316)	(247)
Acquisitions of businesses, net of cash acquired	(15)	(249)	(1,009)
Purchase of additional interests in consolidated subsidiaries	(5)	(349)	(2)
Proceeds from disposition of businesses and assets	3,370	1,983	31
Other, net	(51)	(76)	(25)
Net cash provided by (used in) investing activities from continuing operations	3,027	993	(1,252)
Net cash used in investing activities from discontinued operations	(437)	(580)	(593)
Net cash provided by (used in) investing activities	2,590	413	(1,845)
Cash flows from financing activities:
Investment segment contributions from non-controlling interests	310	600	505
Investment segment distributions from non-controlling interests	0	0	(7)
Partnership contributions	0	612	1
Partnership distributions	(97)	(81)	(103)
Proceeds from subsidiary equity offerings	6	0	0
Dividends and distributions to non-controlling interests in subsidiaries	(139)	(75)	(73)
Proceeds from issuance of senior unsecured notes	0	2,470	0
Repayments of senior unsecured notes	0	(2,450)	0
Proceeds from other borrowings	1,268	1,334	1,908
Repayments of borrowings	(1,346)	(1,430)	(1,923)
Other, net	9	(1)	(18)
Net cash provided by financing activities from continuing operations	11	979	290
Net cash used in financing activities from discontinued operations	(163)	(261)	(232)
Net cash provided by financing activities	(152)	718	58
Effect of exchange rate changes on cash and cash equivalents	(7)	3	0
Add back change in cash and restricted cash of assets held for sale	81	321	(165)
Net increase (decrease) in cash and cash equivalents and restricted cash and restricted cash equivalents	3,427	27	(734)
Cash and cash equivalents and restricted cash and restricted cash equivalents	1,911	1,884	2,618
Cash and cash equivalents and restricted cash and restricted cash equivalents	5,338	1,911	1,884
Icahn Enterprises Holdings
Cash flows from operating activities:
Net income (loss)	2,047	2,593	(2,219)
Income from discontinued operations	(1,764)	(234)	(65)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net loss (gain) from securities transactions	476	(2,273)	(266)
Purchases of securities	(4,810)	(781)	(2,059)
Proceeds from sales of securities	6,763	2,413	7,630
Purchases to cover securities sold, not yet purchased	(1,083)	(1,078)	(361)
Proceeds from securities sold, not yet purchased	1,077	1,222	616
Changes in receivables and payables relating to securities transactions	(1,195)	(1,704)	(4,828)
Gain on disposition of assets, net	(84)	(2,163)	(6)
Depreciation and amortization	447	474	526
Impairment	92	87	586
Deferred taxes	(19)	(557)	(134)
Other, net	122	(29)	57
Accounts receivable, net	45	(72)	(58)
Inventories, net	(86)	(185)	(86)
Other assets	(208)	20	315
Accounts payable	(61)	132	28
Unrealized loss on derivative contracts	(1,239)	136	1,106
Accrued expenses and other liabilities	(84)	(123)	(403)
Net cash provided by (used in) operating activities from continuing operations	436	(2,122)	379
Net cash provided by operating activities from discontinued operations	479	694	839
Net cash provided by (used in) operating activities	915	(1,428)	1,218
Cash flows from investing activities:
Capital expenditures	(272)	(316)	(247)
Acquisitions of businesses, net of cash acquired	(15)	(249)	(1,009)
Purchase of additional interests in consolidated subsidiaries	(5)	(349)	(2)
Proceeds from disposition of businesses and assets	3,370	1,983	31
Other, net	(51)	(76)	(25)
Net cash provided by (used in) investing activities from continuing operations	3,027	993	(1,252)
Net cash used in investing activities from discontinued operations	(437)	(580)	(593)
Net cash provided by (used in) investing activities	2,590	413	(1,845)
Cash flows from financing activities:
Investment segment contributions from non-controlling interests	310	600	505
Investment segment distributions from non-controlling interests	0	0	(7)
Partnership contributions	0	612	1
Partnership distributions	(97)	(81)	(103)
Proceeds from subsidiary equity offerings	6	0	0
Dividends and distributions to non-controlling interests in subsidiaries	(139)	(75)	(73)
Proceeds from issuance of senior unsecured notes	0	2,470	0
Repayments of senior unsecured notes	0	(2,450)	0
Proceeds from other borrowings	1,268	1,334	1,908
Repayments of borrowings	(1,346)	(1,430)	(1,923)
Other, net	9	(1)	(18)
Net cash provided by financing activities from continuing operations	11	979	290
Net cash used in financing activities from discontinued operations	(163)	(261)	(232)
Net cash provided by financing activities	(152)	718	58
Effect of exchange rate changes on cash and cash equivalents	(7)	3	0
Add back change in cash and restricted cash of assets held for sale	81	321	(165)
Net increase (decrease) in cash and cash equivalents and restricted cash and restricted cash equivalents	3,427	27	(734)
Cash and cash equivalents and restricted cash and restricted cash equivalents	1,911	1,884	2,618
Cash and cash equivalents and restricted cash and restricted cash equivalents	$ 5,338	$ 1,911	$ 1,884

Description of Business	12 Months Ended
Description of Business	Dec. 31, 2018
Description of Business [Abstract]
Description of Business and Basis of Presentation	Description of Business. Overview Icahn Enterprises L.P. (“Icahn Enterprises”) is a master limited partnership formed in Delaware on February 17, 1987. Icahn Enterprises Holdings L.P. (“Icahn Enterprises Holdings”) is a limited partnership formed in Delaware on February 17, 1987. References to "we," "our" or "us" herein include both Icahn Enterprises and Icahn Enterprises Holdings and their subsidiaries, unless the context otherwise requires. Icahn Enterprises owns a 99% limited partner interest in Icahn Enterprises Holdings. Icahn Enterprises G.P. Inc. ("Icahn Enterprises GP"), which is owned and controlled by Mr. Carl C. Icahn, owns a 1% general partner interest in each of Icahn Enterprises and Icahn Enterprises Holdings as of December 31, 2018. Icahn Enterprises Holdings and its subsidiaries own substantially all of our assets and liabilities and conduct substantially all of our operations. Therefore, the financial results of Icahn Enterprises and Icahn Enterprises Holdings are substantially the same, with differences relating primarily to the allocation of the general partner interest, which is reflected as an aggregate 1.99% general partner interest in the financial statements of Icahn Enterprises. In addition to the above, Mr. Icahn and his affiliates owned approximately 91.7% of Icahn Enterprises' outstanding depositary units as of December 31, 2018. Description of Operating Businesses We are a diversified holding company owning subsidiaries currently engaged in the following continuing operating businesses: Investment, Energy, Automotive, Food Packaging, Metals, Real Estate, Home Fashion and Mining. We also report the results of our Holding Company, which includes the results of certain subsidiaries of Icahn Enterprises and Icahn Enterprises Holdings (unless otherwise noted), and investment activity and expenses associated with our Holding Company. Our historical results also report the results of our Railcar segment through the date we sold our last remaining railcars on lease, which occurred in the third quarter of 2018. See Note 12, "Segment and Geographic Reporting," for a reconciliation of each of our reporting segment's results of operations to our consolidated results. Certain additional information with respect to our segments are discussed below. Investment Our Investment segment is comprised of various private investment funds ("Investment Funds") in which we have general partner interests and through which we invest our proprietary capital. We and certain of Mr. Icahn's wholly-owned affiliates are the only investors in the Investment Funds. As general partner, we provide investment advisory and certain administrative and back office services to the Investment Funds but do not provide such services to any other entities, individuals or accounts. Interests in the Investment Funds are not offered to outside investors. We had interests in the Investment Funds with a fair market value of approximately $5.1 billion and $3.0 billion as of December 31, 2018 and 2017, respectively. Energy We conduct our Energy segment through our majority owned subsidiary, CVR Energy, Inc. ("CVR Energy"). CVR Energy is a diversified holding company primarily engaged in the petroleum refining and nitrogen fertilizer manufacturing businesses through its holdings in CVR Refining, LP ("CVR Refining") and CVR Partners, LP ("CVR Partners"), respectively. CVR Refining is an independent petroleum refiner and marketer of high value transportation fuels. CVR Partners produces and markets nitrogen fertilizers in the form of urea ammonium nitrate and ammonia. CVR Energy has a general partner interest in CVR Refining and CVR Partners and also owns approximately 80.6% of the outstanding common units of CVR Refining and 34.4% of the outstanding common units of CVR Partners as of December 31, 2018. On August 1, 2018, CVR Energy completed an exchange offer whereby CVR Refining's public unitholders tendered a total of 21,625,106 common units of CVR Refining in exchange for 13,699,549 shares of CVR Energy common stock. In connection with this transaction, our equity attributable to Icahn Enterprises and Icahn Enterprises holdings increased by $99 million. As of December 31, 2018, we owned approximately 70.8% of the total outstanding common stock of CVR Energy. In addition, as of December 31, 2018, we directly owned approximately 3.9% of the total outstanding common units of CVR Refining. On January 29, 2019, CVR Energy, pursuant to the exercise of its right to purchase all of the issued and outstanding common units in CVR Refining, purchased the remaining common units of CVR Refining not already owned by CVR Energy, including the purchase of CVR Refining common units owned directly by us. As a result, as of January 29, 2019, CVR Energy owns all of the common units of CVR Refining and we no longer have any direct ownership in CVR Refining. In addition, the common units of CVR Refining have subsequently ceased to be publicly traded or listed on the New York Stock Exchange any other national securities exchange. The remaining common units of CVR Refining acquired in this transaction were purchased for $241 million, excluding the amount paid by CVR Energy to us for the common units of CVR Refining directly owned by us. During 2016, CVR Partners acquired a nitrogen fertilizer business for total purchase price consideration which included the issuance of common units of CVR Partners with a fair value of $335 million, cash paid of $99 million and debt assumed with a fair value of $368 million. Automotive We conduct our Automotive segment through our wholly-owned subsidiary, Icahn Automotive Group LLC ("Icahn Automotive"). Icahn Automotive is engaged in the retail and wholesale distribution of automotive parts in the aftermarket as well as providing automotive repair and maintenance services to its customers. Icahn Automotive is the parent company of various automotive businesses acquired in recent years, including The Pep Boys - Manny, Moe & Jack ("Pep Boys") and the franchise businesses of Precision Tune Auto Care ("Precision Tune") and American Driveline Systems, the franchisor of AAMCO and Cottman Transmission service centers ("American Driveline"). Precision Tune and American Driveline were acquired in 2017 for an aggregate purchase price of $162 million. Pep Boys was acquired in 2016 for aggregate consideration of approximately $1.2 billion. Food Packaging We conduct our Food Packaging segment through our majority owned subsidiary, Viskase Companies, Inc. ("Viskase"). During January 2018, Viskase received $50 million in connection with its common stock rights offering. In connection with this rights offering, we fully exercised our subscription rights under our basic and over subscription privileges to purchase additional shares of Viskase common stock, thereby increasing our ownership of Viskase from 74.6% to 78.6%, for an aggregate additional investment of $44 million. Viskase is a producer of cellulosic, fibrous and plastic casings used to prepare and package processed meat products. Metals We conduct our Metals segment through our indirect wholly-owned subsidiary, PSC Metals LLC (“PSC Metals”). PSC Metals is principally engaged in the business of collecting, processing and selling ferrous and non-ferrous metals, as well as the processing and distribution of steel pipe and plate products. PSC Metals collects industrial and obsolete scrap metal, processes it into reusable forms and supplies the recycled metals to its customers. Real Estate Our Real Estate operations consist primarily of rental real estate, property development and associated club activities. Our rental real estate operations consist primarily of office and industrial properties leased to single corporate tenants. Our property development operations are run primarily through a real estate investment, management and development subsidiary that focuses primarily on the construction and sale of single-family and multi-family homes, lots in subdivisions and planned communities, and raw land for residential development. Our property development locations also operate golf and club operations. In addition, our Real Estate operations also includes a hotel, timeshare and casino resort property in Aruba as well as a casino property in Atlantic City, New Jersey, which ceased operations in 2014 prior to our obtaining control of the property. During 2018, our Real Estate segment sold two commercial rental properties for aggregate proceeds of $179 million, resulting in aggregate pretax gain on disposition of assets of $89 million. In August 2017, our Real Estate segment sold a development property in Las Vegas, Nevada for $600 million, resulting in a pretax gain on disposition of assets of $456 million. The transaction included cash proceeds from the sale of $225 million and two tranches of seller financing totaling $375 million (including a $345 million first-lien mortgage and a $30 million second-lien mortgage). The seller financing receivables, plus accrued and unpaid interest receivable, are included in other assets in our consolidated balance sheet as of December 31, 2017 and were received in full during 2018. Home Fashion We conduct our Home Fashion segment through our wholly-owned subsidiary, WestPoint Home LLC (“WPH”). WPH's business consists of manufacturing, sourcing, marketing, distributing and selling home fashion consumer products. Mining We conduct our Mining segment through our majority owned subsidiary, Ferrous Resources Ltd. ("Ferrous Resources"). As of December 31, 2018, we owned approximately 77.2% of the total outstanding common stock of Ferrous Resources. Ferrous Resources acquired certain rights to iron ore mineral resources in Brazil and develops mining operations and related infrastructure to produce and sell iron ore products to the global steel industry. On December 5, 2018, we announced a definitive agreement to sell Ferrous Resources for total consideration of $550 million. The transaction is expected to close in the first half of 2019. This transaction met all the criteria to be classified as held for sale on December 5, 2018 upon execution of the definitive agreement. Railcar We conducted our Railcar segment through our wholly-owned subsidiary, American Railcar Leasing, LLC ("ARL"). ARL operated a leasing business consisting of purchased railcars leased to third parties under operating leases. During 2017, we sold ARL and a majority of its railcar lease fleet for aggregate cash consideration of approximately $1.8 billion and reassigned the debt of ARL to the purchaser. During 2018, we sold all remaining railcars of ARL not previously sold for additional cash consideration of $17 million. In connection with these transactions, we recorded a pretax gain on disposition of assets of approximately $1.7 billion in 2017 and an additional pretax gain of $5 million in 2018. As a result of the sale of all remaining railcars, as of December 31, 2018, our business no longer includes an active Railcar segment. Description of Discontinued Operating Businesses As of December 31, 2018, we also report discontinued operations previously reported in our Automotive and Railcar segments and former Gaming segment as discussed below. In addition, see Note 13, "Discontinued Operations," for additional information with respect to our discontinued operating businesses. Automotive Our discontinued Automotive operations consists of our previously wholly-owned subsidiary, Federal-Mogul LLC ("Federal-Mogul"). During January 2017, we increased our ownership in Federal-Mogul from 82.0% to 100% for an aggregate purchase price of $305 million. On October 1, 2018, we closed on the previously announced sale of Federal-Mogul to Tenneco Inc. ("Tenneco"). In connection with the sale, we received $800 million in cash and approximately 29.5 million shares of Tenneco common stock, of which approximately 23.8 million shares are non-voting shares that will convert to voting shares if and when sold. The remaining approximately 5.7 million voting shares received by us represents approximately 9.9% of the aggregate voting interest in Tenneco. There are restrictions on how many shares of Tenneco common stock that can be sold by us within the first 150 days after the closing of the sale. The voting and non-voting shares of Tenneco common stock have the same economic value. As of October 1, 2018, the approximately 29.5 million voting and non-voting shares of Tenneco common stock had a fair market value of approximately $1.2 billion, which our Holding Company will hold and record as a Level 1 investment measured at fair value on a recurring basis. In addition, Federal-Mogul's outstanding debt was assumed by Tenneco. As a result of the sale of Federal-Mogul, we recorded a pretax gain on sale of discontinued operations attributable to Icahn Enterprises of $251 million in the fourth quarter of 2018. Gaming Our discontinued Gaming operations consists of our previous majority ownership in Tropicana Entertainment Inc. ("Tropicana") and the Trump Taj Mahal Casino Resort ("Taj Mahal"). In August 2017, we increased our ownership in Tropicana from 72.5% to 83.9% through a tender offer for additional shares of Tropicana common stock not already owned by us for an aggregate purchase price of $95 million. In addition, Tropicana repurchased and retired shares of its common stock in connection with this tender offer for an aggregate purchase price of $36 million. Taj Mahal closed in October 2016 and was subsequently sold on March 31, 2017. On October 1, 2018, Tropicana closed on the previously announced real estate sales and merger transaction for aggregate cash consideration, net of adjustments, of approximately $1.8 billion. The transaction did not include Tropicana Aruba Resort and Casino, which was retained by us and is now reported within our Real Estate segment. Our proportionate share of the cash proceeds, net of adjustments, was approximately $1.5 billion. As a result of the sale of Tropicana, we recorded a pretax gain on sale of discontinued operations attributable to Icahn Enterprises of $779 million in the fourth quarter of 2018. Railcar Our discontinued Railcar operations consists of our previous majority ownership in American Railcar Industries, Inc. ("ARI"). On December 5, 2018, we closed on the previously announced sale of ARI for aggregate cash consideration of $831 million. As a result of the sale of ARI, we recorded a pretax gain on sale of discontinued operations attributable to Icahn Enterprises of $400 million in the fourth quarter of 2018.

Basis of Presentation and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

Basis of Presentation and Summary of Significant Accounting Policies [Abstract]

Basis of Presentation and Summary of Significant Accounting Policies

Basis of Presentation and Summary of Significant Accounting Policies.

The audited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).

We conduct and plan to continue to conduct our activities in such a manner as not to be deemed an investment company under the Investment Company Act of 1940, as amended (the "Investment Company Act"). Therefore, no more than 40% of our total assets can be invested in investment securities, as such term is defined in the Investment Company Act. In addition, we do not invest or intend to invest in securities as our primary business. We intend to structure our investments to continue to be taxed as a partnership rather than as a corporation under the applicable publicly traded partnership rules of the Internal Revenue Code, as amended.

Events beyond our control, including significant appreciation or depreciation in the market value of certain of our publicly traded holdings or adverse developments with respect to our ownership of certain of our subsidiaries, could result in our inadvertently becoming an investment company that is required to register under the Investment Company Act. Our recent sales of Federal-Mogul, Tropicana and ARI did not result in our being considered an investment company. However, additional transactions involving the sale of certain assets could result in our being considered an investment company. Following such events or transactions, an exemption under the Investment Company Act would provide us up to one year to take steps to avoid becoming classified as an investment company. We expect to take steps to avoid becoming classified as an investment company, but no assurance can be made that we will successfully be able to take the steps necessary to avoid becoming classified as an investment company.

Principles of Consolidation

As of December 31, 2018, our consolidated financial statements include the accounts of (i) Icahn Enterprises and Icahn Enterprises Holdings and (ii) the wholly and majority owned subsidiaries of Icahn Enterprises and Icahn Enterprises Holdings, in addition to variable interest entities ("VIEs") in which we are the primary beneficiary. In evaluating whether we have a controlling financial interest in entities that we consolidate, we consider the following: (1) for voting interest entities, including limited partnerships and similar entities that are not VIEs, we consolidate these entities in which we own a majority of the voting interests; and (2) for VIEs, we consolidate these entities in which we are the primary beneficiary. See below for a discussion of our VIEs. Kick-out rights, which are the rights underlying the limited partners' ability to dissolve the limited partnership or otherwise remove the general partners, held through voting interests of partnerships and similar entities that are not VIEs are considered the equivalent of the equity interests of corporations that are not VIEs.

Except for our Investment segment, for equity investments in which we own 50% or less but greater than 20%, we generally account for such investments using the equity method. All other equity investments are accounted for at fair value.

Discontinued Operations and Held For Sale

We classify assets and liabilities as held for sale when management, having the authority to approve the action, commits to a plan to sell the disposal group, the sale is probable within one year, and the disposal group is available for immediate sale in its present condition. We also consider whether an active program to locate a buyer has been initiated, whether the disposal group is marketed actively for sale at a price that is reasonable in relation to its current fair value, and whether actions required to complete the plan indicate it is unlikely significant changes to the plan will be made or the plan will be withdrawn.

In accordance with U.S. GAAP, we classify operations as discontinued when they meet all the criteria to be classified as held for sale and when the sale represents a strategic shift that will have a major impact on our financial condition and results of operations.

Use of Estimates in Preparation of Financial Statements

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the period. Due to the inherent uncertainty involved in making estimates, actual results may differ from the estimates and assumptions used in preparing the consolidated financial statements.

Reclassifications

In connection with our adoption of Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") No. 2016-18, Restricted Cash, as discussed below, our net cash provided by operating activities for the years ended December 31, 2017 and 2016 was decreased by $19 million and $446 million, respectively.

In connection with our adoption of FASB ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, as discussed below, we decreased our selling, general and administrative costs by $4 million and $4 million and decreased other income, net by $4 million and $4 million for the years ended December 31, 2017 and 2016, respectively.

Certain reclassifications have been made within the consolidated statements of operations to include gain (loss) on derivatives within cost of goods sold for our Energy segment. Prior year balances have been reclassified to conform to the current year presentation. The reclassifications of losses on derivatives from other income, net to costs of goods sold were $70 million and $19 million for the years ended December 31, 2017 and 2016, respectively. These reclassifications did not have an impact on previously reported net income.

We have recasted certain historical results for discontinued operations, which we disclose in Note 13, "Discontinued Operations." In addition, certain other reclassifications from the prior year presentation have been made to conform to the current year presentation, which did not have an impact on previously reported net income and equity and are not deemed material.

Consolidated Variable Interest Entities

The following is a discussion of variable interest entities in which we are deemed to be the primary beneficiary and in which we therefore consolidate. In addition, as discussed in Note 3, "Related Party Transactions," we have a variable interest in an entity in which we are not the primary beneficiary and therefore we do not consolidate.

Icahn Enterprises Holdings

We determined that Icahn Enterprises Holdings is a VIE because it lacks both substantive kick-out and participating rights. Icahn Enterprises is the primary beneficiary of Icahn Enterprises Holdings principally based on its 99% limited partner interest in Icahn Enterprises Holdings and therefore continues to consolidate Icahn Enterprises Holdings. The consolidated financial statements of Icahn Enterprises Holdings are included in this Report. The balances with respect to Icahn Enterprises Holdings' consolidated VIEs are discussed below, comprising the Investment Funds, CVR Refining, CVR Partners and Viskase.

Investment

We determined that each of the Investment Funds are considered VIEs because these limited partnerships lack both substantive kick-out and participating rights. Because we have a general partner interest in each of the Investment Funds and have significant limited partner interests in each of the Investment Funds, coupled with our significant exposure to losses and benefits in each of the Investment Funds, we are the primary beneficiary of each of the Investment Funds and therefore continue to consolidate each of the Investment Funds.

Energy

CVR Refining and CVR Partners are each considered VIEs because each of these limited partnerships lack both substantive kick-out and participating rights. In addition, CVR Energy also concluded that, based upon its general partner's roles and rights in CVR Refining and CVR Partners as afforded by their respective partnership agreements, coupled with its exposure to losses and benefits in each of CVR Refining and CVR Partners through its significant limited partner interests, intercompany credit facilities and services agreements, it is the primary beneficiary of both CVR Refining and CVR Partners. Based upon this evaluation, CVR Energy continues to consolidate both CVR Refining and CVR Partners.

Food Packaging

Viskase holds a variable interest in a joint venture for which Viskase is the primary beneficiary. Viskase's interest in the joint venture includes a 50% equity interest and also relates to the sales, operations, administrative and financial support to the joint venture through providing many of the assets used in its business.

The following table includes balances of assets and liabilities of VIE's included in Icahn Enterprises Holdings' consolidated balance sheets.



	December 31,
	2018		2017
	(in millions)
Cash and cash equivalents	$	415	$	223
Cash held at consolidated affiliated partnerships and restricted cash	2,648		734
Investments	6,951		9,615
Due from brokers	664		506
Property, plant and equipment, net	3,027		3,185
Inventories, net	380		369
Intangible assets, net	278		298
Other assets	863		267
Accounts payable, accrued expenses and other liabilities	516		1,815
Securities sold, not yet purchased, at fair value	468		1,023
Due to brokers	141		1,057
Debt	1,170		1,166

Fair Value of Financial Instruments

The carrying values of cash and cash equivalents, cash held at consolidated affiliated partnerships and restricted cash, accounts receivable, due from brokers, accounts payable, accrued expenses and other liabilities and due to brokers are deemed to be reasonable estimates of their fair values because of their short-term nature. See Note 4, “Investments and Related Matters,” and Note 5, “Fair Value Measurements,” for a detailed discussion of our investments and other non-financial assets and/or liabilities.

The fair value of our long-term debt is based on the quoted market prices for the same or similar issues or on the current rates offered to us for debt of the same remaining maturities. The carrying value and estimated fair value of our debt as of December 31, 2018 was approximately $7.3 billion and $7.3 billion, respectively. The carrying value and estimated fair value of our debt as of December 31, 2017 was approximately $7.4 billion and $7.6 billion, respectively.

Acquisitions of Businesses

We account for business combinations under the acquisition method of accounting (other than acquisitions of businesses under common control), which requires us to recognize separately from goodwill the assets acquired and the liabilities assumed at their acquisition date fair values. While we use our best estimates and assumptions to accurately value assets acquired and liabilities assumed at the acquisition date as well as contingent consideration, where applicable, our estimates are inherently uncertain and subject to refinement.

Accounting for business combinations requires us to make significant estimates and assumptions, especially at the acquisition date including our estimates for intangible assets, contractual obligations assumed, pre-acquisition contingencies, and contingent consideration, where applicable. In valuing our acquisitions, we estimate fair values based on industry data and trends and by reference to relevant market rates and transactions, and discounted cash flow valuation methods, among other factors. The discount rates used were commensurate with the inherent risks associated with each type of asset and the level and timing of cash flows appropriately reflect market participant assumptions. The primary items that generate goodwill include the value of the synergies between the acquired company and our existing businesses and the value of the acquired assembled workforce, neither of which qualifies for recognition as an intangible asset.

Acquisition, Investments and Disposition of Entities under Common Control

Acquisitions or investments of entities under common control are reflected in a manner similar to pooling of interests. The general partner's capital account or non-controlling interests, as applicable, are charged or credited for the difference between the consideration we pay for the entity and the related entity's basis prior to our acquisition or investment. Net gains or losses of an acquired entity prior to its acquisition or investment date are allocated to the general partner's capital account or non-controlling interests, as applicable. In allocating gains and losses upon the sale of a previously acquired common control entity, we allocate a gain or loss for financial reporting purposes by first restoring the general partner's capital account or non-controlling interests, as applicable, for the cumulative charges or credits relating to prior periods recorded at the time of our acquisition or investment and then allocating the remaining gain or loss ("Common Control Gains or Losses") among our general partner, limited partners and non-controlling interests, as applicable, in accordance with their respective ownership percentages. In the case of acquisitions of entities under common control, such Common Control Gains or Losses are allocated in accordance with their respective partnership percentages under the Amended and Restated Agreement of Limited Partnership dated as of May 12, 1987, as amended from time to time (together with the partnership agreement of Icahn Enterprises Holdings, the “Partnership Agreement”) (i.e., 98.01% to the limited partners and 1.99% to the general partner).

Cash Flow

Cash and cash equivalents and restricted cash and restricted cash equivalents in our consolidated statements of cash flows is comprised of (i) cash and cash equivalents and (ii) cash held at consolidated affiliated partnerships and restricted cash.

Cash and Cash Equivalents

We consider short-term investments, which are highly liquid with original maturities of three months or less at date of purchase, to be cash equivalents.

Cash Held at Consolidated Affiliated Partnerships and Restricted Cash

Our cash held at consolidated affiliated partnerships balance was $2,648 million and $192 million as of December 31, 2018 and December 31, 2017, respectively. Cash held at consolidated affiliated partnerships relates to our Investment segment and consists of cash and cash equivalents held by the Investment Funds that, although not legally restricted, is not available to fund the general liquidity needs of the Investment segment or Icahn Enterprises.

Our restricted cash balance was $34 million and $555 million as of December 31, 2018 and December 31, 2017, respectively. Restricted cash includes, but is not limited to, our Investment segment's cash pledged and held for margin requirements on derivative transactions.

Investments and Related Transactions

Investment

Investment Transactions and Related Investment Income (Loss). Investment transactions of the Investment Funds are recorded on a trade date basis. Realized gains or losses on sales of investments are based on the first-in, first-out or the specific identification method. Realized and unrealized gains or losses on investments are recorded in the consolidated statements of operations. Interest income and expenses are recorded on an accrual basis and dividends are recorded on the ex-dividend date. Premiums and discounts on fixed income securities are amortized using the effective yield method.

Investments held by the Investment segment are carried at fair value. Our Investment segment applies the fair value option to those investments that are otherwise subject to the equity method.

Valuation of Investments. Securities of the Investment Funds that are listed on a securities exchange are valued at their last sales price on the primary securities exchange on which such securities are traded on such date. Securities that are not listed on any exchange but are traded over-the-counter are valued at the mean between the last “bid” and “ask” price for such security on such date. Securities and other instruments for which market quotes are not readily available are valued at fair value as determined in good faith by the Investment Funds.

Foreign Currency Transactions. The books and records of the Investment Funds are maintained in U.S. dollars. Assets and liabilities denominated in currencies other than U.S. dollars are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Transactions during the period denominated in currencies other than U.S. dollars are translated at the rate of exchange applicable on the date of the transaction. Foreign currency translation gains and losses are recorded in the consolidated statements of operations. The Investment Funds do not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in the market prices of

securities. Such fluctuations are reflected in net gain (loss) from investment activities in the consolidated statements of operations.

Fair Values of Financial Instruments. The fair values of the Investment Funds' assets and liabilities that qualify as financial instruments under applicable U.S. GAAP approximate the carrying amounts presented in the consolidated balance sheets.

Securities Sold, Not Yet Purchased. The Investment Funds may sell an investment they do not own in anticipation of a decline in the fair value of that investment. When the Investment Funds sell an investment short, they must borrow the investment sold short and deliver it to the broker-dealer through which they made the short sale. A gain, limited to the price at which the Investment Funds sold the investment short, or a loss, unlimited in amount, will be recognized upon the cover of the short sale.

Due From Brokers. Due from brokers represents cash balances with the Investment Funds' clearing brokers. These funds as well as fully-paid for and marginable securities are essentially restricted to the extent that they serve as collateral against securities sold, not yet purchased. Due from brokers may also include unrestricted balances with derivative counterparties.

Due To Brokers. Due to brokers represents margin debit balances collateralized by certain of the Investment Funds' investments in securities.

Other Segments and Holding Company

Investments in equity and debt securities are carried at fair value with the unrealized gains or losses reflected in the consolidated statements of operations. For purposes of determining gains and losses, the cost of securities is based on specific identification. Dividend income is recorded when declared and interest income is recognized when earned.

Fair Value Option for Financial Assets and Financial Liabilities

The fair value option gives entities the option to measure eligible financial assets, financial liabilities and firm commitments at fair value (i.e., the fair value option), on an instrument-by-instrument basis, that are otherwise not permitted to be accounted for at fair value pursuant to the provisions of FASB Accounting Standards Codification ("ASC") Topic 825, Financial Instruments. The election to use the fair value option is available when an entity first recognizes a financial asset or financial liability or upon entering into a firm commitment. Subsequent changes in fair value must be recorded in earnings. In estimating the fair value for financial instruments for which the fair value option has been elected, we use the valuation methodologies in accordance to where the financial instruments are classified within the fair value hierarchy as discussed in Note 5, “Fair Value Measurements.” For our Investment segment, we apply the fair value option to our investments that would otherwise be accounted under the equity method.

Derivatives

From time to time, our subsidiaries enter into derivative contracts, including purchased and written option contracts, swap contracts, futures contracts and forward contracts. U.S. GAAP requires recognition of all derivatives as either assets or liabilities in the balance sheet at their fair value. The accounting for changes in fair value depends on the intended use of the derivative and its resulting designation. For those derivative instruments that are designated and qualify as hedging instruments, a company must designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge or a hedge of a net investment in a foreign operation. Gains and losses related to a hedge are either recognized in income immediately to offset the gain or loss on the hedged item or are deferred and reported as a component of accumulated other comprehensive loss and subsequently recognized in earnings when the hedged item affects earnings. The change in fair value of the ineffective portion of a financial instrument, determined using the hypothetical derivative method, is recognized in earnings immediately. The gain or loss related to financial instruments that are not designated as hedges are recognized immediately in earnings. Cash flows related to hedging activities are included in the operating section of the consolidated statements of cash flows. For further information regarding our derivative contracts, see Note 6, “Financial Instruments."

Accounts Receivable, Net

Accounts receivable, net consists of trade receivables from customers, including contract assets when we have an unconditional right to receive consideration. An allowance for doubtful accounts is determined through analysis of the aging of accounts receivable at the date of the consolidated financial statements, assessments of collectability based on an evaluation of historic and anticipated trends, the financial condition of our customers, and an evaluation of the impact of economic conditions. Our allowance for doubtful accounts is an estimate based on specifically identified accounts as well as general reserves based on historical experience.

Inventories, Net

Energy

Our Energy segment inventories consist primarily of domestic and foreign crude oil, blending stock and components, work in progress, fertilizer products, and refined fuels and by-products. Inventories are valued at the lower of FIFO cost, or net realizable value for fertilizer products, refined fuels and by-products for all periods presented. Refinery unfinished and finished products inventory values were determined using the ability-to-bear process, whereby raw materials and production costs are allocated to work-in-process and finished goods based on their relative fair values. Other inventories, including other raw materials, spare parts and supplies, are valued at the lower of moving-average cost, which approximates FIFO, or net realizable value. The cost of inventories includes inbound freight costs.

Automotive, Food Packaging, and Home Fashion

Our Automotive, Food Packaging and Home Fashion segment inventories are stated at the lower of cost or market. Cost is determined by using the first-in, first-out basis method ("FIFO"), except for our Automotive segment, which also utilizes weighted-average cost and the last-in, first-out method for certain of its subsidiaries. Inventory recorded using the last-in, first-out method was $846 million and $900 million as of December 31, 2018 and 2017, respectively, all of which relates to finished goods. The cost of manufactured goods includes the cost of direct materials, labor and manufacturing overhead. Our Automotive, Food Packaging and Home Fashion segments reserve for estimated excess, slow-moving and obsolete inventory as well as inventory whose carrying value is in excess of net realizable value.

Metals

Our Metals segment inventories are stated at the lower of cost or market. Cost is determined using the average cost method. The production and accounting process utilized by our Metals segment to record recycled metals inventory quantities relies on significant estimates. Our Metals segment relies upon perpetual inventory records that utilize estimated recoveries and yields that are based upon historical trends and periodic tests for certain unprocessed metal commodities. Over time, these estimates are reasonably good indicators of what is ultimately produced; however, actual recoveries and yields can vary depending on product quality, moisture content and source of the unprocessed metal. To assist in validating the reasonableness of the estimates, our Metals segment performs periodic physical inventories which involve the use of estimation techniques. Physical inventories may detect significant variations in volume, but because of variations in product density and production processes utilized to manufacture the product, physical inventories will not generally detect smaller variations. To help mitigate this risk, our Metals segment adjusts its physical inventories when the volume of a commodity is low and a physical inventory can more accurately estimate the remaining volume.

Mining

Our Mining segment inventories are valued at the lower of cost or market. Cost includes all costs incurred in the normal course of business in bringing each product to its present location and condition, including direct materials and direct labor costs, and an allocation of production overheads based on normal production capacity. Cost is calculated using weighted average unit cost.

Long-Lived Assets

Long-lived assets such as property, plant, and equipment, and definite-lived intangible assets are recorded at cost or fair value established at acquisition, less accumulated depreciation or amortization, unless the expected future use of the assets indicate a lower value is appropriate. Long-lived asset groups are evaluated for impairment when impairment indicators exist. If the carrying value of a long-lived asset group is impaired, an impairment charge is recorded for the amount by which the carrying value of the long-lived asset group exceeds its fair value. Depreciation and amortization are computed principally by the straight-line method for financial reporting purposes.

Land and construction in progress are stated at the lower of cost or net realizable value. Interest is capitalized on expenditures for long-term projects until a salable or ready-for-use condition is reached. The interest capitalization rate is based on the interest rate on specific borrowings to fund the projects.

Energy

The direct-expense method of accounting is used for planned major maintenance activities. Maintenance costs are recognized as expense when maintenance services are performed. Planned major maintenance activities for CVR Energy's nitrogen plant generally occur every two to three years. The required frequency of planned major maintenance activities varies by unit for the refineries, but generally is every four to five years.

For the years ended December 31, 2018, 2017, and 2016, our Energy segment recorded an aggregate of $10 million, $83 million and $38 million, respectively, in turnaround expenses related to its refineries and nitrogen fertilizer plants.

Mining

The costs of acquiring mineral reserves and resources for our Mining segment are capitalized in the consolidated balance sheets as incurred. Capitalized mineral reserves and mine development expenditures are, upon commencement of commercial production, depreciated using a unit of production method based on the estimated economically recoverable reserves to which they relate, or are written off if abandoned.

Exploration and evaluation expenditures relate to costs incurred in the exploration and evaluation of potential mineral reserves and include costs such as exploratory drilling, sample testing and the costs of feasibility studies. For our Mining segment, exploration and evaluation expenditures other than that acquired through the purchase of another mining company, are expensed as incurred. Purchased exploration and evaluation assets are recognized as assets at their cost of acquisition or at fair value if purchased as part of a business combination.

Expenditures are transferred to mine development assets once the work completed supports the future development of the property, provided that technical feasibility and commercial viability studies have been successfully completed.

Goodwill and Indefinite-Lived Intangible Assets

Goodwill and indefinite-lived intangible assets primarily include trademarks and brand names acquired in acquisitions. For a complete discussion of the impairment of goodwill and indefinite-lived intangible assets related to our various segments, see Note 8, “Goodwill and Intangible Assets, Net.”

Goodwill

Goodwill is determined as the excess of fair value over amounts attributable to specific tangible and intangible assets. Goodwill is reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a reporting unit’s carrying value exceeds its fair value. When performing the goodwill impairment testing, a reporting units’ fair value is based on valuation techniques using the best available information, primarily discounted cash flows projections, guideline transaction multiples, and multiples of current and future earnings. The impairment charge, if any, is the excess of the tested reporting unit's carrying value over its fair value, limited to the total amount of goodwill allocated to the tested reporting unit.

Indefinite-Lived Intangible Assets

Indefinite-lived intangible assets are stated at fair value established at acquisition or cost. These indefinite-lived intangible assets are reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a trademark or brand names' carrying value exceeds its fair value. The fair values of these assets are based upon the prospective stream of hypothetical after-tax royalty cost savings discounted at rates that reflect the rates of return appropriate for these intangible assets. The impairment charge, if any, is the excess of the assets carrying value over its fair value.

Pension and Other Post-Retirement Benefit Plan Obligations

Post-retirement benefit liabilities were $77 million and $80 million as of December 31, 2018 and 2017, respectively, and are included in accrued expenses and other liabilities in our consolidated balance sheets.

Appropriate actuarial methods and assumptions are used in accounting for defined benefit pension plans and other post-retirement benefit plans. These assumptions include long-term rate of return on plan assets, discount rates and other factors. Actual results that differ from the assumptions used are accumulated and amortized over future periods. Therefore, assumptions used to calculate benefit obligations as of the end of the year directly impact the expense to be recognized in future periods. The measurement date for all defined benefit plans is December 31 of each year.

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss is included in the limited partners and general partner components of equity in the consolidated balance sheets in the amounts of $84 million and $1,384 million as of December 31, 2018 and 2017, respectively. Refer to Note 15, "Changes in Accumulated Other Comprehensive Loss," for further information.

Allocation of Net Profits and Losses in Consolidated Affiliated Partnerships

Net investment income and net realized and unrealized gains and losses on investments of the Investment Funds are allocated to the respective partners of the Investment Funds based on their percentage ownership in such Investment Funds on a monthly basis. Except for our limited partner interest, such allocations made to the limited partners of the Investment Funds are represented as non-controlling interests in our consolidated statements of operations.

General Partnership Interest of Icahn Enterprises and Icahn Enterprises Holdings

The general partner's capital account generally consists of its cumulative share of our net income less cash distributions plus capital contributions. Additionally, in acquisitions of common control companies accounted for at historical cost similar to a pooling of interests, the general partner's capital account would be charged (or credited) in a manner similar to a distribution (or contribution) for the excess (or deficit) of the fair value of consideration paid over historical basis in the business acquired.

Capital Accounts, as defined under the Partnership Agreement, are maintained for our general partner and our limited partners. The capital account provisions of our Partnership Agreement incorporate principles established for U.S. federal income tax purposes and are not comparable to the equity accounts reflected under U.S. GAAP in our consolidated financial statements. Under our Partnership Agreement, the general partner is required to make additional capital contributions to us upon the issuance of any additional depositary units in order to maintain a capital account balance equal to 1.99% (1% in the case of Icahn Enterprises Holdings) of the total capital accounts of all partners.

Generally, net earnings for U.S. federal income tax purposes are allocated 1.99% (1% in the case of Icahn Enterprises Holdings) and 98.01% (99% in the case of Icahn Enterprises Holdings) between the general partner and the limited partners, respectively, in the same proportion as aggregate cash distributions made to the general partner and the limited partners during the period. This is generally consistent with the manner of allocating net income under our Partnership Agreement; however, it is not comparable to the allocation of net income reflected in our consolidated financial statements.

Pursuant to the Partnership Agreement, in the event of our dissolution, after satisfying our liabilities, our remaining assets would be divided among our limited partners and the general partner in accordance with their respective percentage interests under the Partnership Agreement. If a deficit balance still remains in the general partner's capital account after all allocations are made between the partners, the general partner would not be required to make whole any such deficit.

Basic and Diluted Income Per LP Unit

For Icahn Enterprises, basic income (loss) per LP unit is based on net income or loss attributable to Icahn Enterprises allocated to limited partners. Net income or loss allocated to limited partners is divided by the weighted-average number of LP units outstanding. Diluted income (loss) per LP unit, when applicable, is based on basic income (loss) adjusted for the potential effect of dilutive securities as well as the related weighted-average number of units and equivalent units outstanding.

For accounting purposes, when applicable, earnings prior to dates of acquisitions of entities under common control are excluded from the computation of basic and diluted income per LP unit as such earnings are allocated to our general partner.

Income Taxes

Except as described below, no provision has been made for federal, state, local or foreign income taxes on the results of operations generated by partnership activities, as such taxes are the responsibility of the partners. Provision has been made for federal, state, local or foreign income taxes on the results of operations generated by our corporate subsidiaries and these are reflected within continuing and discontinued operations. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

Deferred tax assets are limited to amounts considered to be realizable in future periods. A valuation allowance is recorded against deferred tax assets if management does not believe that we have met the “more-likely-than-not” standard to allow recognition of such an asset.

U.S. GAAP provides that the tax effects from an uncertain tax position can be recognized in the financial statements only if the position is “more-likely-than-not” to be sustained if the position were to be challenged by a taxing authority. The assessment of the tax position is based solely on the technical merits of the position, without regard to the likelihood that the tax position may be challenged. If an uncertain tax position meets the “more-likely-than-not” threshold, the largest amount of tax benefit that is greater than 50 percent likely to be recognized upon ultimate settlement with the taxing authority is recorded. See Note 14, “Income Taxes,” for additional information.

Revenue From Contracts With Customers and Contract Balances

As discussed below, on January 1, 2018, we adopted FASB ASC Topic 606, Revenue from Contracts with Customers. Due to the nature of our business, we derive revenue from various sources in various industries. Investment segment and Holding Company revenues are not in scope of FASB ASC Topic 606. Real Estate leasing and Railcar leasing revenues are also not in scope of FASB ASC Topic 606. Revenue from contracts with customers are included in net sales and other revenues from operations in the consolidated statements of operations. Related contract assets are included in accounts receivable, net or other assets and related contract liabilities are included in accrued expenses and other liabilities in the consolidated balance sheets. Revenue from contracts with customers and related contract balances relate primarily to our Energy and Automotive segments. The following is a summary of our revenue recognition that is in scope of FASB ASC Topic 606. In addition, we present disaggregated revenue information in Note 12, "Segment and Geographic Reporting."

Energy

Revenue: Our Energy segment revenues from the sale of petroleum products are recorded upon delivery of the products to customers, which is the point at which title is transferred and the customer has assumed the risk of loss. This generally takes place as product passes into the pipeline, as a product transfer order occurs within a pipeline system, or as product enters equipment or locations supplied or designated by the customer. For our Energy segment's nitrogen fertilizer products sold, revenues are recorded at the point in time at which the customer obtains control of the product, which is generally upon delivery and acceptance by the customer. Nitrogen fertilizer products are sold on a wholesale basis under a contract or by purchase order. Excise and other taxes collected from customers and remitted to governmental authorities by our Energy segment are not included in reported revenues.

The petroleum business' contracts with its customers state the terms of the sale, including the description, quantity, and price of each product sold. Depending on the product sold, payment from customers is generally due in full within 2 to 30 days of product delivery or invoice date. Many of the petroleum business' contracts have index-based pricing which is considered variable consideration that should be estimated in determining the transaction price. Our Energy segment determined that it does not need to estimate the variable consideration because the uncertainty related to the consideration is resolved on the pricing date or the date when the product is delivered. The nitrogen fertilizer business has an immaterial amount of variable consideration for contracts with an original duration of less than a year. A small portion of the nitrogen fertilizer partnership's revenue includes contracts extending beyond one year and contain variable pricing in which the majority of the variability is attributed to the market-based pricing. The nitrogen fertilizer business' contracts do not contain a significant financing component.

Our Energy segment generally provides no warranty other than the implicit promise that goods delivered are free of liens and encumbrances and meet the agreed upon specifications. In addition, product returns are very rare and are accounted for as they occur, however, contracts do include provisions which state that the petroleum business will except returns of off-spec product, refund the customer, provide on-spec product, and pay for damages to any customer equipment which resulted from off-spec product. Typically, if a customer is not satisfied with a product, the price is adjusted downward instead of the product being returned or exchanged.

As of December 31, 2018, our Energy segment had $11 million of remaining performance obligations for contracts within an original expected duration of more than one year. Our Energy segment expects to recognize approximately $5 million of these performance obligations as revenue by the end of 2019 and the remaining balance thereafter.

Contract balances: Our Energy segment's deferred revenue is a contract liability that primarily relates to fertilizer sales contracts requiring customer prepayment prior to product delivery to guarantee a price and supply of nitrogen fertilizer. Deferred revenue is recorded at the point in time in which a prepaid contract is legally enforceable and the associated right to consideration is unconditional prior to transferring product to the customer. An associated receivable is recorded for uncollected

prepaid contract amounts. Contracts requiring prepayment are generally short-term in nature and, as discussed above, revenue is recognized at the point in time in which the customer obtains control of the product. Our Energy segment had deferred revenue of $69 million and $34 million as of December 31, 2018 and January 1, 2018 (the effective date of the adoption of FASB ASC Topic 606), respectively. Deferred revenue is included in accrued expense and other liabilities in the consolidated balance sheets. For the year ended December 31, 2018, our Energy segment recorded revenue of $34 million with respect to deferred revenue outstanding as of January 1, 2018.

Automotive

Revenue: Our Automotive segment recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Our Automotive segment revenue from retail and commercial parts sales is measured based on consideration specified in a contract with a customer and excludes any sales incentives and amounts collected on behalf of third parties. Automotive service revenues are recognized on completion of the service and consist of products and the labor charged for installing products or maintaining or repairing vehicles. Automotive services labor revenues are included in other revenues from operations in our consolidated statements of operations, however, the sale of any installed parts or materials related to automotive services are included in net sales. Our Automotive segment recognizes revenues from extended warranties offered to its customers on tires its sells, including lifetime warranties for road hazard assistance (recognized over 3 years) and 1-year, 3-year and lifetime plans for alignments (recognized over 1 year, 3 years and 5 years, respectively), for which it receives payment upfront. Revenues from extended warranties are recognized over the term of the warranty contract with the satisfaction of its performance obligations measured using the output method. Our Automotive segment recognizes revenues from franchise fees, which it receives payment upfront, and franchise royalties, for which it receives payment over time. Revenues from upfront franchise fees are recognized at the time the store opens, as that is when our Automotive segment's performance obligations are deemed complete, and revenues from franchise royalties are recognized in the period in which royalties are earned, generally based on a percentage of franchise sales.

Contract balances: Our Automotive segment has deferred revenue with respect to extended warranty plans of $42 million and $42 million as of December 31, 2018 and January 1, 2018, respectively, which are included in accrued expenses and other liabilities in our consolidated balance sheets. For the year ended December 31, 2018, our Automotive segment recorded revenue of $22 million with respect to deferred revenue outstanding as of January 1, 2018. For deferred revenue outstanding as of December 31, 2018, our Automotive segment expects to recognize approximately $22 million in 2019 and the remainder thereafter.

Food Packaging

Our Food Packaging segment revenues are recognized at the time products are shipped to the customer, under F.O.B. shipping point or F.O.B. port terms, which is the point at which title is transferred, the customer has the assumed risk of loss, and payment has been received or collection is reasonably assumed. Revenues are net of discounts, rebates and allowances. Viskase records all labor, raw materials, in-bound freight, plant receiving and purchasing, warehousing, handling and distribution costs as a component of costs of goods sold.

Metals

Our Metals segment's primary source of revenue is from the sale of processed ferrous scrap metal, non-ferrous scrap metals, steel pipe and steel plate. PSC Metals also generates revenues from sales of secondary plate and pipe, the brokering of scrap metals and from services performed. All sales are recognized when title passes to the customer. Revenues from services are recognized as the service is performed. Sales adjustments related to price and weight differences are reflected as a reduction of revenues when settled.

Home Fashion

Our Home Fashion segment records revenue upon delivery and when title is transferred and the customer has assumed the risk of loss. Unless otherwise agreed in writing, title and risk of loss pass from WPH to the customer when WPH delivers the merchandise to the designated point of delivery, to the designated point of destination or to the designated carrier, free on board. Provisions for certain rebates, sales incentives, product returns and discounts to customers are recorded in the same period the related revenue is recorded.

Mining

Our Mining segment recognizes revenue when title, ownership, and risk of loss pass to the customer, all of which occur upon shipment or delivery of the product and is based on the applicable shipping terms. Revenue is measured at the fair value of the consideration received or receivable, with any adjustments as a result of provisional pricing recorded against revenue.

Other Revenue and Expense Recognition

Real Estate

Revenue Recognition: Revenue from real estate sales and related costs are recognized at the time of closing primarily by specific identification. Substantially all of the property comprising our net lease portfolio is leased to others under long-term net leases and we account for these leases in accordance with applicable U.S. GAAP. We account for our leases as follows: (i) under the financing method, (x) minimum lease payments to be received plus the estimated value of the property at the end of the lease are considered the gross investment in the lease and (y) unearned income, representing the difference between gross investment and actual cost of the leased property, is amortized to income over the lease term so as to produce a constant periodic rate of return on the net investment in the lease; and (ii) under the operating method, revenue is recognized as rentals become due, and expenses (including depreciation) are charged to operations as incurred.

Railcar

Revenue recognition: Revenues from railcar leasing are generated from operating leases that are priced as an integrated service that includes amounts related to executory costs, such as certain maintenance, insurance, and ad valorem taxes and are recognized on a straight-line basis per terms of the underlying lease. If railcars are sold under a lease that is less than one year old, the proceeds from the railcars sold that were on lease will be shown on a gross basis in revenues and cost of revenues at the time of sale. Sales of leased railcars that have been on lease for more than one year are recognized as a net gain or loss from the disposal of the long-term asset as a component of earnings from operations.

Energy

Shipping Costs: Our Energy segment's pass-through finished goods delivery costs reimbursed by customers are reported in net sales, while an offsetting expense is included in cost of goods sold.

Automotive

Shipping Costs: Our Automotive segment recognizes shipping and handling costs as incurred and is included in selling, general and administrative in the consolidated statements of operations for its commercial and retail parts businesses.

Environmental Liabilities

We recognize environmental liabilities when a loss is probable and reasonably estimable. Estimates of these costs are based upon currently available facts, internal and third-party assessments of contamination, available remediation technology, site-specific costs, and currently enacted laws and regulations. In reporting environmental liabilities, no offset is made for potential recoveries. Loss contingency accruals, including those for environmental remediation, are subject to revision as further information develops or circumstances change, and such accruals can take into account the legal liability of other parties. Environmental expenditures are capitalized at the time of the expenditure when such costs provide future economic benefits.

Litigation

On an ongoing basis, we assess the potential liabilities related to any lawsuits or claims brought against us. While it is typically very difficult to determine the timing and ultimate outcome of such actions, we use our best judgment to determine if it is probable that we will incur an expense related to the settlement or final adjudication of such matters and whether a reasonable estimation of such probable loss, if any, can be made. In assessing probable losses, we make estimates of the amount of insurance recoveries, if any. We accrue a liability when we believe a loss is probable and the amount of loss can be reasonably estimated. Due to the inherent uncertainties related to the eventual outcome of litigation and potential insurance recovery, it is possible that certain matters may be resolved for amounts materially different from any provisions or disclosures that we have previously made.

Foreign Currency Translation

Exchange adjustments related to international currency transactions and translation adjustments for international subsidiaries whose functional currency is the U.S. dollar (principally those located in highly inflationary economies) are reflected in the consolidated statements of operations. Translation adjustments of international subsidiaries for which the local currency is the functional currency are reflected in the consolidated balance sheets as a component of accumulated other comprehensive income. Deferred taxes are not provided on translation adjustments, other than for intercompany loans not designated as permanently reinvested, as the earnings of the subsidiaries are considered to be permanently reinvested.

Concentrations of credit risk

Concentrations of credit risk relate primarily to derivative instruments from our Investment segment. See Note 6, “Financial Instruments,” for further discussion.

Adoption of New Accounting Standards

Revenue Accounting Standards Updates

In May 2014, the FASB issued ASU No. 2014-09, creating a new topic, FASB ASC Topic 606, Revenue from Contracts with Customers, superseding revenue recognition requirements in FASB ASC Topic 605, Revenue Recognition. This ASU requires that an entity recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In addition, an entity is required to disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU was amended by ASU No. 2015-14, issued in August 2015, which deferred the original effective date by one year; the effective date of this ASU is for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, using one of two retrospective application methods. In addition, the FASB issued other amendments during 2016 and 2017 to FASB ASC Topic 606 that include implementation guidance to principal versus agent considerations, guidance to identifying performance obligations and licensing guidance and other narrow scope improvements. We adopted these new standards on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The standard has been applied to all contracts at the date of initial application. No adjustment to revenue for periods prior to adoption were required. We have not identified any material differences in our revenue recognition methods that required modification under the new standards. Additionally, our internal control framework did not materially change as a result of the adoption of these new standards. The impact of adopting these new standards on our consolidated financial statements is a cumulative effect adjustment to decrease our equity attributable to Icahn Enterprises and Icahn Enterprises Holdings as of January 1, 2018 by $29 million, primarily relating to our Automotive segment.

As of January 1, 2018, our Energy segment increased each of accounts receivable, net and accrued expenses and other liabilities by $21 million for customer prepayments prior to delivery and to gross up certain fees collected from customers to reflect a receivable and deferred revenue recorded at the point in time in which a prepaid contract is legally enforceable and the associated right to consideration is unconditional. Previously, deferred revenue was recorded by our Energy segment upon customer prepayment.

As of January 1, 2018, our Automotive segment increased accrued expenses and other liabilities by $42 million and decreased deferred tax liabilities by $10 million for certain extended warranties to reflect the revenues from these plans as deferred revenue. Previously, revenues from these plans were recognized upfront. Our Automotive segment also recognizes revenue from the sale of goods on a drop ship basis. Previously, revenues from these transactions were recognized gross. For the year ended December 31, 2018, net sales and cost of goods sold would have been higher by $62 million and $62 million, respectively, under prior accounting principles.

In addition to the above, we increased assets by an aggregate of $32 million and increased liabilities by $29 million as of January 1, 2018, primarily with respect to Federal-Mogul's asset and liabilities classified as held for sale. For the year ended December 31, 2018, the impact on revenues would have been immaterial under prior accounting principles.

Other Accounting Standards Updates

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall, which amends FASB ASC Topic 825, Financial Instruments. This ASU requires that equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes recognized in earnings. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment. In addition, there were other amendments to certain disclosure and presentation matters pertaining to financial instruments, including the requirement of an entity to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. We adopted this new standard on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The amendments related to equity securities without readily determinable fair values were applied prospectively to equity investments that existed as of the date of adoption. The adoption of this standard did not have a material impact on our consolidated financial statements.

In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU seeks to reduce the diversity currently in practice by providing guidance on the presentation of eight specific cash flow issues in the statement of cash flows. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The adoption of this standard did not have a material impact on our consolidated statements of cash flows.

In November 2016, the FASB issued ASU No. 2016-18, Restricted Cash, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU requires that the statement of cash flows explain the change during the period total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We have adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications."

In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which amends FASB ASC Topic 715, Compensation - Retirement Benefits. This ASU requires entities to present the service cost component of net periodic benefit cost in the same line item or items in the financial statements as other compensation costs arising from services rendered by the pertinent employees during the period. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications."

In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, which amends FASB ASC Topic 718, Compensation - Stock Compensation. This ASU provides updated guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 which has been applied prospectively and which did not have a material impact on our consolidated financial statements.

Recently Issued Accounting Standards

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which supersedes FASB ASC Topic 840, Leases. This ASU requires the recognition of right-of-use assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. In addition, among other changes to the accounting for leases, this ASU retains the distinction between finance leases and operating leases. The classification criteria for distinguishing between finance leases and operating leases are substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the previous guidance. Furthermore, quantification and qualitative disclosures, including disclosures regarding significant judgments made by management, will be required. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The amendments in this ASU should be applied using a modified retrospective approach. Early application is permitted. In addition, in July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842), which provides an additional (and optional) transition method to adopt the new leases standard. We have developed an implementation plan to adopt the new leases standard using the new transition method option effective January 1, 2019, which will require adopting the new leases standard at the adoption date and recognizing a cumulative-effect adjustment to the opening balance of equity in the period of adoption instead of the earliest period presented. In addition, prior period presentation and disclosure will not be adjusted after adoption. The most significant impact will relate to the recognition of right-of-use assets and lease liabilities on our consolidated balance sheets for long-term operating leases with the significant majority of the impact within our Automotive segment. Our Automotive segment has identified approximately 2,300 leases, primarily for real estate, and estimates recognizing right-of-use assets of $639 million and related liabilities of $674 million as of January 1, 2019. Our Energy segment estimates recognizing right-of-use assets and liabilities of $53 million, in addition to the recognition of finance lease assets and obligations of $26 million, as of January 1, 2019. The aggregate impact of all other segments is not material.

In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments, which amends FASB ASC Topic 326, Financial Instruments - Credit Losses. This ASU requires financial assets measured at amortized cost to be presented at the net amount to be collected and broadens the information, including forecasted information incorporating more timely information, that an entity must consider in developing its expected credit loss estimate for assets measured. This ASU is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early

application is permitted for fiscal years beginning after December 15, 2018. We are currently evaluating the impact of this standard on our consolidated financial statements.

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which amends FASB ASC Topic 815, Derivatives and Hedging. This ASU includes amendments to existing guidance to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which amends FASB ASC Topic 220, Income Statement - Reporting Comprehensive Income. This ASU allows a reclassification out of accumulated other comprehensive loss within equity for standard tax effects resulting from the Tax Cuts and Jobs Act and consequently, eliminates the stranded tax effects resulting from the Tax Cuts and Jobs Act. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurements, which amends FASB ASC Topic 820, Fair Value Measurements. This ASU eliminates, modifies and adds various disclosure requirements on fair value measurements. This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Certain disclosures are required to be applied using a retrospective approach and others using a prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract, which amends FASB ASC Subtopic 350-40, Intangibles-Goodwill and Other-Internal-Use Software. This ASU adds certain disclosure requirements related to implementation costs incurred for internal-use software and cloud computing arrangements. The amendment aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The amendments in this ASU should be applied either using a retrospective or prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions. Our second amended and restated agreement of limited partnership expressly permits us to enter into transactions with our general partner or any of its affiliates, including, without limitation, buying or selling properties from or to our general partner and any of its affiliates and borrowing and lending money from or to our general partner and any of its affiliates, subject to limitations contained in our partnership agreement and the Delaware Revised Uniform Limited Partnership Act. The indentures governing our indebtedness contain certain covenants applicable to transactions with affiliates. Investment Funds During the years ended December 31, 2018, 2017 and 2016, Mr. Icahn and his affiliates (excluding us) invested $310 million, $600 million and $498 million, respectively, in the Investment Funds, net of redemptions. As of December 31, 2018 and 2017, the total fair market value of investments in the Investment Funds made by Mr. Icahn and his affiliates (excluding us) was approximately $5.0 billion and $4.4 billion, respectively, representing approximately 50% and 59% of the Investment Funds' assets under management as of each respective date. We pay for expenses pertaining to the operation, administration and investment activities of our Investment segment for the benefit of the Investment Funds (including salaries, benefits and rent). Effective April 1, 2011, based on an expense-sharing arrangement, certain expenses borne by us are reimbursed by the Investment Funds. For the years ended December 31, 2018, 2017 and 2016, $12 million, $13 million and $34 million, respectively, was allocated to the Investment Funds based on this expense-sharing arrangement. Hertz Global Holdings, Inc. As discussed in Note 4, "Investments and Related Matters," the Investment Funds have an investment in the common stock of Hertz Global Holdings, Inc. ("Hertz") measured at fair value that would have otherwise been subject to the equity method of accounting. Icahn Automotive provides services to Hertz in the ordinary course of business. For the years ended December 31, 2018, 2017 and 2016, revenue from Hertz was $40 million, $17 million and $3 million, respectively. Additionally, Federal-Mogul had payments to Hertz in the ordinary course of business of $1 million, $2 million and $2 million for the years ended December 31, 2018, 2017 and 2016, respectively. During the year ended December 31, 2018, the Investment Funds purchased shares of a certain investment from Hertz in the amount of $36 million. In addition to our transactions with Hertz disclosed above, in January 2018, we entered into a Master Motor Vehicle Lease and Management Agreement with Hertz, pursuant to which Hertz granted 767 Auto Leasing LLC ("767 Leasing"), a joint venture created to purchase vehicles for lease, the option to acquire certain vehicles from Hertz at rates aligned with the rates at which Hertz sells vehicles to third parties. Under this agreement, Hertz will lease the vehicles that 767 Leasing purchases from Hertz, or from third parties, under a mutually developed fleet plan and Hertz will manage, service, repair, sell and maintain those leased vehicles on behalf of 767 Leasing. Additionally, Hertz will rent the leased vehicles to transportation network company drivers from rental counters within locations leased or owned by us. This agreement has an initial term of 18 months and is subject to automatic six-month renewals thereafter, unless terminated by either party (with or without cause) prior to the start of any such six-month renewal. Our agreement with Hertz was unanimously approved by the independent directors of Icahn Enterprises' audit committee. Due to the nature of our involvement with 767 Leasing, which includes guaranteeing the payment obligations of 767 Leasing and sharing in the profits of 767 Leasing with Hertz, we determined that 767 Leasing is a variable interest entity. Furthermore, we determined that we are not the primary beneficiary as we do not have the power to direct the activities of 767 Leasing that most significantly impact its economic performance. Therefore, we do not consolidate the results of 767 Leasing. Our exposure to loss with respect to 767 Leasing is primarily limited to our direct investment in 767 Leasing as well as any payment obligations of 767 Leasing that we guarantee, which are not material at December 31, 2018. As of December 31, 2018, 767 Leasing had assets of $60 million, primarily vehicles for lease, and liabilities of $1 million, which represents a payable to Icahn Automotive in connection with a shared services agreement. For the year ended December 31, 2018, our Automotive segment invested $60 million in 767 Leasing. As of December 31, 2018, our Automotive segment had an equity method investment in 767 Leasing of $59 million. American Railcar Leasing, LLC On February 29, 2016, Icahn Enterprises entered into a contribution agreement with an affiliate of Mr. Icahn to acquire the remaining 25% economic interest in ARL not already owned by us. Pursuant to this contribution agreement, we contributed 685,367 newly issued depositary units of Icahn Enterprises with a fair value of $35 million to such affiliate in exchange for the remaining 25% economic interest in ARL. As a result of the transaction, we owned a 100% economic interest in ARL. This transaction was authorized by the independent committee of the board of directors of the general partner of Icahn Enterprises. The independent committee was advised by independent counsel and retained an independent financial advisor which rendered a fairness opinion. ACF Industries LLC Our Railcar operations, prior to December 5, 2018 (the date we closed on the sale of ARI), had certain transactions with ACF Industries LLC ("ACF"), an affiliate of Mr. Icahn, under various agreements, as well as on a purchase order basis. ACF is a manufacturer and fabricator of specialty railcar parts and miscellaneous steel products. Agreements and transactions with ACF include the following: •Railcar component purchases from ACF •Railcar parts purchases from and sales to ACF •Railcar purchasing and engineering services agreement with ACF •Lease of certain intellectual property to ACF •Railcar repair services and support for ACF •Railcar purchases from ACF (prior to June 1, 2017) Purchases from ACF were $3 million, $6 million and $21 million for the years ended December 31, 2018, 2017 and 2016, respectively. For the years ended December 31, 2018, 2017 and 2016, revenues from ACF were $6 million, $1 million and $1 million, respectively. Insight Portfolio Group LLC Insight Portfolio Group LLC ("Insight Portfolio Group") is an entity formed and controlled by Mr. Icahn in order to maximize the potential buying power of a group of entities with which Mr. Icahn has a relationship in negotiating with a wide range of suppliers of goods, services and tangible and intangible property at negotiated rates. Icahn Enterprises Holdings has a minority equity interest in Insight Portfolio Group and agreed to pay a portion of Insight Portfolio Group's operating expenses. In addition to the minority equity interest held by Icahn Enterprises Holdings, certain subsidiaries of ours, including CVR Energy, Viskase, PSC Metals, WPH, Federal-Mogul (prior to October 1, 2018), ARI (prior to December 5, 2018), ARL (prior to June 1, 2017) and Tropicana (prior to October 1, 2018) also acquired minority equity interests in Insight Portfolio Group and agreed to pay a portion of Insight Portfolio Group's operating expenses. A number of other entities with which Mr. Icahn has a relationship also have minority equity interests in Insight Portfolio Group and also agreed to pay certain of Insight Portfolio Group's operating expenses. For the years ended December 31, 2018, 2017 and 2016, we and certain of our subsidiaries paid certain of the Insight Portfolio Group's operating expenses of $4 million, $2 million and $2 million, respectively.

Investments and Related Matters

12 Months Ended

Dec. 31, 2018

Investments and Related Matters [Abstract]

Investments and Related Matters

Investments and Related Matters.

Investment

Investments and securities sold, not yet purchased consist of equities, bonds, bank debt and other corporate obligations, all of which are reported at fair value in our consolidated balance sheets. These investments are considered trading securities. In addition, our Investment segment has certain derivative transactions which are discussed in Note 6, “Financial Instruments." The carrying value and detail by security type, including business sector for equity securities, with respect to investments and securities sold, not yet purchased held by our Investment segment consist of the following:



	December 31,
	2018		2017
Assets	(in millions)
Investments:
Equity securities:
Basic materials	$	414	$	1,170
Consumer, non-cyclical	2,161		2,551
Consumer, cyclical	1,161		777
Energy	1,598		1,489
Financial	167		2,185
Technology	1,040		833
Other	145		372
	6,686		9,377
Corporate debt securities	181		155
	$	6,867	$	9,532
Liabilities
Securities sold, not yet purchased, at fair value:
Equity securities:
Consumer, non-cyclical	$	57	$	101
Consumer, cyclical	106		667
Energy	305		110
Industrial	—		110
	468		988
Corporate debt securities	—		35
	$	468	$	1,023

The portion of unrealized (losses) gains that relates to securities still held by our Investment segment, primarily equity securities, was $(800) million, $1,413 million and $340 million for the years ended December 31, 2018, 2017 and 2016, respectively.

As of December 31, 2018, the Investment Funds owned approximately 27.9% of the outstanding common stock of Hertz. Our Investment segment recorded net (losses) gains of $(197) million, $13 million and $(389) million for the years ended December 31, 2018, 2017 and 2016, respectively, with respect to its investment in Hertz. As of December 31, 2018 and 2017, the aggregate fair value of our Investment segment's investment in Hertz was $320 million and $517 million, respectively.

The Investment Funds also owned approximately 18.1% of the outstanding common stock of Herbalife Ltd. ("Herbalife") as of December 31, 2018. We are deemed to have significant influence with respect to our investment in Herbalife after considering the collective ownership in Herbalife by us and affiliates of Mr. Icahn, as well as our collective representation on the board of directors of Herbalife. Our Investment segment recorded net gains (losses) of $864 million, $357 million and $(113) million for the years ended December 31, 2018, 2017 and 2016, respectively, with respect to its investment in Herbalife. As of December 31, 2018 and 2017, the aggregate fair value of our Investment segment's investment in Herbalife was approximately $1.7 billion and $1.2 billion, respectively.

Herbalife and Hertz each file annual, quarterly and current reports and proxy and information statements with the SEC, which are publicly available.

Other Segments and Holding Company

With the exception of certain equity method investments at our operating subsidiaries, our investments are measured at fair value in our consolidated balance sheets. The carrying value of investments held by our Other segments and our Holding Company consist of the following:



	December 31,
	2018		2017
	(in millions)
Equity method investments	$	143	$	83
Other investments (measured at fair value)	1,327		400
	$	1,470	$	483

The portion of unrealized (losses) gains that relates to equity securities still held by our Other segments and Holding Company was $(339) million, $67 million and $0 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Fair Value Measurements

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements.

U.S. GAAP requires enhanced disclosures about investments and non-recurring non-financial assets and liabilities that are measured and reported at fair value and has established a hierarchal disclosure framework that prioritizes and ranks the level of market price observability used in measuring investments or non-financial assets and liabilities at fair value. Market price observability is impacted by a number of factors, including the type of investment and the characteristics specific to the investment. Investments with readily available active quoted prices or for which fair value can be measured from actively quoted prices generally will have a higher degree of market price observability and a lesser degree of judgment used in measuring fair value.

Investments and non-financial assets and/or liabilities measured and reported at fair value are classified and disclosed in one of the following categories:

Level 1 - Quoted prices are available in active markets for identical investments and non-financial assets and/or liabilities as of the reporting date.

Level 2 - Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined through the use of models or other valuation methodologies where all significant inputs are observable. The inputs and assumptions of our Level 2 investments are derived from market observable sources including reported trades, broker/dealer quotes and other pertinent data.

Level 3 - Pricing inputs are unobservable for the investment and non-financial asset and/or liability and include situations where there is little, if any, market activity for the investment or non-financial asset and/or liability. The inputs into the determination of fair value require significant management judgment or estimation. Fair value is determined using

comparable market transactions and other valuation methodologies, adjusted as appropriate for liquidity, credit, market and/or other risk factors.

In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the investments', non-financial assets' and/or liabilities' level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and consideration of factors specific to the investment. Significant transfers, if any, between the levels within the fair value hierarchy are recognized at the beginning of the reporting period when changes in circumstances require such transfers.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes the valuation of our assets and liabilities by the above fair value hierarchy levels measured on a recurring basis:



	December 31, 2018								December 31, 2017
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets	(in millions)
Investments (Note 4)	$	7,493	$	317	$	372	$	8,182	$	9,378	$	264	$	278	$	9,920
Derivative contracts, at fair value (Note 6)⁽¹⁾	7		517		—		524		—		—		—		—
	$	7,500	$	834	$	372	$	8,706	$	9,378	$	264	$	278	$	9,920
Liabilities
Securities sold, not yet purchased (Note 4)	$	468	$	—	$	—	$	468	$	988	$	35	$	—	$	1,023
Other liabilities	—		2		—		2		—		1		—		1
Derivative contracts, at fair value (Note 6)	—		36		—		36		36		1,239		—		1,275
	$	468	$	38	$	—	$	506	$	1,024	$	1,275	$	—	$	2,299


⁽¹⁾	Amounts are classified within other assets in our consolidated balance sheets.

Refer to Note 18, "Pension and Other Post-Retirement Benefit Plans," for our Food Packaging segment's defined benefit plan assets measured at fair value on a recurring basis as of December 31, 2018 and 2017.

Assets Measured at Fair Value on a Recurring Basis for Which We Use Level 3 Inputs to Determine Fair Value

The changes in investments measured at fair value on a recurring basis for which we use Level 3 inputs to determine fair value are as follows:



	Year Ended December 31,
	2018			2017
	(in millions)
Balance at January 1	$	278		$	211
Net unrealized gains	95			67
Other	(1		)	—
Balance at December 31	$	372		$	278

Net unrealized gains during the years ended December 31, 2018 and 2017 relate to a certain equity investment which is considered a Level 3 investment due to unobservable market data and is measured at fair value on a recurring basis. We determined the fair value of this investment based on recent market transactions. As of December 31, 2018 and 2017, the fair value of this investment was $369 million and $274 million, respectively.

Assets Measured at Fair Value on a Non-Recurring Basis for Which We Use Level 3 Inputs to Determine Fair Value

Certain assets measured at fair value using Level 3 inputs on a nonrecurring basis have been impaired. During the years ended December 31, 2018, 2017 and 2016, we recorded impairment charges of $5 million, $10 million and $9 million, respectively, relating to property, plant and equipment. We determined the fair value of property, plant and equipment by

applying probability weighted, expected present value techniques to the estimated future cash flows using assumptions a market participant would utilize. In addition, during the year ended December 31, 2017, we recorded a loss of $8 million from marking inventory down to net realizable value at our Automotive segment. Additionally, in connection with our reclassification of certain Railcar segment assets from held and used to assets held for sale, we recorded aggregate impairment charges of $68 million for the year ended December 31, 2017, which represents the difference between the carrying value and fair value less cost to sell of such assets.

Refer to Note 8, "Goodwill and Intangible Assets, Net," for discussion of our goodwill and intangible asset impairments.

Refer to Note 12, "Segment and Geographic Reporting," for total impairment recorded by each of our segments.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Financial Instruments

12 Months Ended

Dec. 31, 2018

Financial Instruments [Abstract]

Financial Instruments

Financial Instruments.

Overview

Investment

In the normal course of business, the Investment Funds may trade various financial instruments and enter into certain investment activities, which may give rise to off-balance-sheet risks, with the objective of capital appreciation or as economic hedges against other securities or the market as a whole. The Investment Funds' investments may include futures, options, swaps and securities sold, not yet purchased. These financial instruments represent future commitments to purchase or sell other financial instruments or to exchange an amount of cash based on the change in an underlying instrument at specific terms at specified future dates. Risks arise with these financial instruments from potential counterparty non-performance and from changes in the market values of underlying instruments.

Credit concentrations may arise from investment activities and may be impacted by changes in economic, industry or political factors. The Investment Funds routinely execute transactions with counterparties in the financial services industry, resulting in credit concentration with respect to the financial services industry. In the ordinary course of business, the Investment Funds may also be subject to a concentration of credit risk to a particular counterparty. The Investment Funds seek to mitigate these risks by actively monitoring exposures, collateral requirements and the creditworthiness of its counterparties.

The Investment Funds have entered into various types of swap contracts with other counterparties. These agreements provide that they are entitled to receive or are obligated to pay in cash an amount equal to the increase or decrease, respectively, in the value of the underlying shares, debt and other instruments that are the subject of the contracts, during the period from inception of the applicable agreement to its expiration. In addition, pursuant to the terms of such agreements, they are entitled to receive or obligated to pay other amounts, including interest, dividends and other distributions made in respect of the underlying shares, debt and other instruments during the specified time frame. They are also required to pay to the counterparty a floating interest rate equal to the product of the notional amount multiplied by an agreed-upon rate, and they receive interest on any cash collateral that they post to the counterparty at the federal funds or LIBOR rate in effect for such period.

The Investment Funds may trade futures contracts. A futures contract is a firm commitment to buy or sell a specified quantity of a standardized amount of a deliverable grade commodity, security, currency or cash at a specified price and specified future date unless the contract is closed before the delivery date. Payments (or variation margin) are made or received by the Investment Funds each day, depending on the daily fluctuations in the value of the contract, and the whole value change is recorded as an unrealized gain or loss by the Investment Funds. When the contract is closed, the Investment Funds record a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed.

The Investment Funds may utilize forward contracts to seek to protect their assets denominated in foreign currencies and precious metals holdings from losses due to fluctuations in foreign exchange rates and spot rates. The Investment Funds' exposure to credit risk associated with non-performance of such forward contracts is limited to the unrealized gains or losses inherent in such contracts, which are recognized in other assets and accrued expenses and other liabilities in our consolidated balance sheets.

The Investment Funds may also enter into foreign currency contracts for purposes other than hedging denominated securities. When entering into a foreign currency forward contract, the Investment Funds agree to receive or deliver a fixed quantity of foreign currency for an agreed-upon price on an agreed-upon future date unless the contract is closed before such date. The Investment Funds record unrealized gains or losses on the contracts as measured by the difference between the forward foreign exchange rates at the dates of entry into such contracts and the forward rates at the reporting date.

The Investment Funds may also purchase and write option contracts. As a writer of option contracts, the Investment Funds receive a premium at the outset and then bear the market risk of unfavorable changes in the price of the underlying financial instrument. As a result of writing option contracts, the Investment Funds are obligated to purchase or sell, at the holder's option, the underlying financial instrument. Accordingly, these transactions result in off-balance-sheet risk, as the Investment Funds' satisfaction of the obligations may exceed the amount recognized in our consolidated balance sheets.

Certain terms of the Investment Funds' contracts with derivative counterparties, which are standard and customary to such contracts, contain certain triggering events that would give the counterparties the right to terminate the derivative instruments. In such events, the counterparties to the derivative instruments could request immediate payment on derivative instruments in net liability positions. The aggregate fair value of all of the Investment Funds' derivative instruments with credit-risk-related contingent features that are in a liability position at December 31, 2018 and 2017 was zero and $17 million, respectively.

The following table summarizes the volume of our Investment segment's derivative activities based on their notional exposure, categorized by primary underlying risk:



	December 31, 2018				December 31, 2017
	Long Notional Exposure		Short Notional Exposure		Long Notional Exposure		Short Notional Exposure
Primary underlying risk:	(in millions)
Equity contracts	$	118	$	8,368	$	243	$	6,660
Credit contracts⁽¹⁾	—		479		—		391
Commodity contracts	—		114		—		634

⁽¹⁾

The short notional amount on our credit default swap positions was approximately $1.8 billion as of December 31, 2018. However, because credit spreads cannot compress below zero, our downside short notional exposure is $479 million as of December 31, 2018. The short notional amount on our credit default swap positions was approximately $2.5 billion as of December 31, 2017. However, because credit spreads cannot compress below zero, our downside short notional exposure to loss is $391 million as of December 31, 2017.

Energy

CVR Refining is subject to price fluctuations caused by supply conditions, weather, economic conditions, interest rate fluctuations and other factors. To manage price risk on crude oil and other inventories and to fix margins on certain future production, CVR Refining from time to time enters into various commodity derivative transactions. CVR Refining holds derivative instruments, such as exchange-traded crude oil futures and certain over-the-counter forward swap agreements, which it believes provide an economic hedge on future transactions, but such instruments are not designated as hedges under U.S. GAAP. There are no premiums paid or received at inception of the derivative contracts and upon settlement.

CVR Refining's commodity derivatives include commodity swaps and forward purchase and sale commitments. CVR Refining did not have open commodity swap instruments at December 31, 2018. At December 31, 2017, CVR Refining had open commodity swap instruments consisting of 15 million barrels of crack spreads, primarily to fix the margin on a portion of its future gasoline and distillate production. Additionally, as of December 31, 2018 and December 31, 2017, CVR Refining had open forward purchase and sale commitments for 2 million barrels and 6 million barrels, respectively, of Canadian crude oil priced at fixed differentials that are not considered probable of physical settlement and are accounted for as derivatives.

Consolidated Derivative Information

Certain derivative contracts executed by the Investment Funds with a single counterparty or by our Energy segment with a single counterparty are reported on a net-by-counterparty basis where a legal right of offset exists under an enforceable netting agreement. Values for the derivative financial instruments, principally swaps, forwards, over-the-counter options and other conditional and exchange contracts, are reported on a net-by-counterparty basis. As a result, the net exposure to counterparties is reported in either other assets or accrued expenses and other liabilities in our consolidated balance sheets.

The following table presents the consolidated fair values of our derivatives that are not designated as hedging instruments in accordance with U.S GAAP:



	Asset Derivatives⁽¹⁾						Liability Derivatives
	December 31, 2018			December 31, 2017			December 31, 2018			December 31, 2017
	(in millions)
Equity contracts	$	568		$	—		$	170		$	1,159
Credit contracts	76			—			—			17
Commodity contracts	15			7			1			106
Sub-total	659			7			171			1,282
Netting across contract types⁽²⁾	(135		)	(7		)	(135		)	(7		)
Total⁽²⁾	$	524		$	—		$	36		$	1,275


⁽¹⁾	Net asset derivatives are located within other assets in our consolidated balance sheets.


⁽²⁾	Excludes netting of cash collateral received and posted. The total collateral posted at December 31, 2018 and 2017 was $0 million and $542 million, respectively, across all counterparties, which are included in cash held at consolidated affiliated partnerships and restricted cash in our consolidated balance sheets.

The following table presents the amount of gain (loss) recognized in the consolidated statements of operations for our derivatives not designated as hedging instruments:



	Gain (Loss) Recognized in Income⁽¹⁾
	Year Ended December 31,
	2018		2017			2016
	(in millions)
Equity contracts	$	603	$	(1,815	)	$	(1,609	)
Foreign exchange contracts	—		—			35
Credit contracts	129		(42		)	44
Interest rate contracts	—		—			(28		)
Commodity contracts	212		(182		)	(101		)
	$	944	$	(2,039	)	$	(1,659	)

⁽¹⁾

Gains (losses) recognized on derivatives are classified in net gain from investment activities in our consolidated statements of operations for our Investment segment and are included in cost of goods sold for our Energy segment. Gains (losses) recognized on derivatives for our Investment segment were $798 million, $(1,969) million and $(1,640) million for the years ended December 31, 2018, 2017 and 2016, respectively. Gains (losses) recognized on derivatives for our Energy segment were $146 million, $(70) million and $(19) million for the years ended December 31, 2018, 2017 and 2016, respectively.

Non-Derivative Instruments Designated as Hedging Instruments

As of December 31, 2017, Federal-Mogul had foreign currency denominated debt, of which $884 million was designated as a net investment hedge in certain foreign subsidiaries and affiliates of Federal-Mogul. We sold Federal-Mogul on October 1, 2018. Changes to its carrying value are included in other comprehensive loss as translation adjustments and other prior to our sale of Federal-Mogul. The amounts recognized in other comprehensive loss for the years ended December 31, 2018 and 2017 was a loss of $29 million and $85 million, respectively.

Inventories, Net (Notes)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

Inventories, Net.

Inventories, net consists of the following:



	December 31,
	2018		2017
	(in millions)
Raw materials	$	217	$	199
Work in process	70		107
Finished goods	1,492		1,424
	$	1,779	$	1,730

Inventories in the table above is presented net of reserves of $39 million and $73 million as of December 31, 2018 and 2017, respectively.

Goodwill and Intangible Assets, Net

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets, Net

Goodwill and Intangible Assets, Net.

Goodwill consists of the following:



	December 31, 2018									December 31, 2017
	Automotive			Food Packaging			Consolidated			Automotive		Food Packaging		Consolidated
	(in millions)
Gross carrying amount, Jan 1	$	320		$	7		$	327		$	320	$	4	$	324
Acquisitions	8			—			8			—		3		3
Foreign exchange	—			(1		)	(1		)	—		—		—
Gross carrying amount, Dec 31	328			6			334			320		7		327

Accumulated impairment, Jan 1	—			—			—			—		—		—
Impairment	(87		)	—			(87		)	—		—		—
Accumulated impairment, Dec 31	(87		)	—			(87		)	—		—		—

Net carrying value, Dec 31	$	241		$	6		$	247		$	320	$	7	$	327

Intangible assets, net consists of the following:



	December 31, 2018							December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
	(in millions)
Definite-lived intangible assets:
Customer relationships	$	396	$	(134	)	$	262	$	397	$	(115	)	$	282
Other	316		(139		)	177		334		(134		)	200
	$	712	$	(273	)	$	439	$	731	$	(249	)	$	482

Indefinite-lived intangible assets						$	62						$	62
Intangible assets, net						$	501						$	544

We recorded amortization expense associated with definite-lived intangible assets for the years ended December 31, 2018, 2017 and 2016 of $47 million, $41 million and $32 million, respectively. We utilize the straight-line method of amortization, recognized over the estimated useful lives of the assets. Additionally, during the years ended December 31, 2017 and 2016, we impaired intangible assets by $1 million and $3 million, respectively.

The estimated future amortization expense for our definite-lived intangible assets is as follows:



Year	Amount
	(in millions)
2019	$	45
2020	44
2021	37
2022	36
2023	34
Thereafter	243
	$	439

Acquisitions

Acquisitions during the year ended December 31, 2018 were not material individually or in the aggregate. As a result of certain acquisitions, our Automotive segment allocated $8 million to goodwill during the year ended December 31, 2018. In addition, our Automotive segment allocated $2 million to definite-lived intangible assets. The purchase price allocations for the above acquisitions are not all final and are subject to change.

Impairment of Goodwill

Prior to 2017, with respect to our reporting units that are allocated goodwill, the first step of the goodwill impairment analysis ("Step 1") involved comparing the fair value of each of our reporting units' assets to their respective carrying values to determine the potential for goodwill impairment. The second step of the goodwill impairment test ("Step 2"), if necessary, involved quantifying the level of goodwill impairment after performing a recoverability analysis of other long-lived assets for impairment first. Beginning with our goodwill impairment analysis in 2017, Step 2 of the goodwill impairment test was eliminated and the determination and quantification of goodwill impairment, if any, was the result of applying Step 1 of the goodwill impairment analysis.

We base the fair value of our reporting units on consideration of various valuation methodologies, including projecting future cash flows discounted at rates commensurate with the risks involved ("DCF"). Assumptions used in a DCF require the exercise of significant judgment, including judgment about appropriate discount rates and terminal values, growth rates, and the amount and timing of expected future cash flows. The forecasted cash flows are based on current plans and for years beyond that plan, the estimates are based on assumed growth rates. We believe that our assumptions are consistent with the plans and estimates used to manage the underlying businesses. The discount rates, which are intended to reflect the risks inherent in future cash flow projections, used in a DCF are based on estimates of the weighted-average cost of capital of a market participant. Such estimates are derived from our analysis of peer companies and consider the industry weighted average return on debt and equity from a market participant perspective.

Energy

We perform the annual goodwill impairment test for our Energy segment as of April 30 of each year, or more frequently if impairment indicators exist.

During the first quarter of 2016, due to worsening sales trends for our Energy segment's petroleum reporting unit, we performed an interim goodwill impairment analysis. Based on this analysis, we recognized a goodwill impairment charge of $574 million for our Energy segment, which represented the full amount of its remaining goodwill.

Automotive

We perform the annual goodwill impairment test for our Automotive segment as of October 1 of each year, or more frequently if impairment indicators exist.

In the fourth quarter of 2018, coinciding with our annual goodwill impairment analysis, we reorganized our Automotive segment's reporting units. Prior to the reorganization, our Automotive segment had two reporting units, Pep-Boys and AutoPlus, with all of its goodwill allocated to the Pep-Boys reporting unit. A goodwill impairment analysis just prior to the reorganization did not have an impact on the Pep-Boys reporting unit goodwill. Upon reorganization of the reporting units, a portion of the Pep-Boys reporting unit was reallocated to the AutoPlus reporting unit, which resulted in our Automotive segment continuing to have two redefined reporting units, Service and Parts. As a result, a portion of the goodwill was reallocated using a relative fair

value allocation approach, which resulted in approximately 27% of the goodwill being reallocated to the Parts reporting unit. Based on our annual goodwill impairment analysis for our Automotive segment, which reflected our reorganized reporting units, we determined that the carrying value of its Parts reporting unit exceeded its fair value and as a result, we recognized a goodwill impairment charge of $87 million in the fourth quarter of 2018, which represented the full amount of the goodwill allocated to the Parts reporting unit. This impairment was the result of our reporting unit reorganization, which resulted in a significant amount of carrying value of net assets being reallocated to the Parts reporting unit, primarily for inventory, with a significantly lesser fair value due to the future projected cash flows of the Parts reporting unit, which resulted in the Parts reporting unit having a carrying value in excess of its fair value. Therefore, the goodwill reallocated to the Parts reporting unit was immediately impaired. We also determined that the fair value of our Automotive segment's Service reporting unit was significantly in excess of its carrying value and therefore, no additional impairment is required. As of December 31, 2018, our Automotive segment had remaining goodwill of $241 million, which is allocated entirely to its Service reporting unit.

Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net.

Property, plant and equipment, net consists of the following:



		December 31,
	Useful Life	2018			2017
	(in years)	(in millions)
Land		$	416		$	508
Buildings and improvements	3 - 40	1,772			1,715
Machinery, equipment and furniture	1 - 30	4,313			4,326
Assets leased to others	5 - 39	279			388
Construction in progress		221			201
		7,001			7,138
Less: Accumulated depreciation and amortization		(2,298		)	(1,952		)
Property, plant and equipment, net		$	4,703		$	5,186

Assets leased to others is related to our Real Estate segment. Our Real Estate segment's anticipated future receipts of minimum lease payments receivable under the financing and operating method are $33 million in 2019, $33 million in 2020 and $10 million in 2021 and thereafter.

Depreciation and amortization expense related to property, plant and equipment for the years ended December 31, 2018, 2017 and 2016 was $398 million, $430 million and $487 million, respectively.

See Note 5, "Fair Value Measurements," for discussion regarding certain impairments to our property, plant and equipment.

Debt

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Debt

Debt.

Debt consists of the following:



	December 31,
	2018		2017
	(in millions)
Holding Company:
6.000% senior unsecured notes due 2020	$	1,702	$	1,703
5.875% senior unsecured notes due 2022	1,344		1,342
6.250% senior unsecured notes due 2022	1,213		1,216
6.750% senior unsecured notes due 2024	498		498
6.375% senior unsecured notes due 2025	748		748
	5,505		5,507
Reporting Segments:
Energy	1,170		1,166
Automotive	372		340
Food Packaging	273		273
Metals	—		1
Real Estate	2		22
Home Fashion	4		5
Mining	—		58
	1,821		1,865
Total Debt	$	7,326	$	7,372

Holding Company

Our Holding Company debt consists of various issues of fixed-rate senior unsecured notes issued by Icahn Enterprises and Icahn Enterprises Finance Corp. (the "Issuers") and guaranteed by Icahn Enterprises Holdings (the "Guarantor"). Interest on each of the senior unsecured notes are payable semi-annually.

On January 18, 2017, the Issuers issued $500 million in aggregate principal amount of 6.750% senior unsecured notes due 2024 and $695 million in aggregate principal amount of 6.250% senior unsecured notes due 2022. The proceeds from these notes were used to redeem all of the prior outstanding senior unsecured notes due 2017 and to pay accrued interest, related fees and expenses.

On December 6, 2017, the Issuers issued $750 million in aggregate principal amount of 6.375% senior unsecured notes due 2025 and an additional $510 million in aggregate principal amount of its existing 6.250% senior unsecured notes due 2022. The proceeds from these notes, together with cash on hand, were used to redeem all of the prior outstanding senior unsecured notes due 2019 and to pay accrued interest, related fees and expenses.

Icahn Enterprises recorded a loss on extinguishment of debt of $12 million in the fourth quarter of 2017 in connection with the debt transactions discussed above.

Each of our senior unsecured notes and the related guarantees are the senior unsecured obligations of the Issuers and rank equally with all of the Issuers’ and the Guarantor’s existing and future senior unsecured indebtedness and senior to all of the Issuers’ and the Guarantor’s existing and future subordinated indebtedness. All of our senior unsecured notes and the related guarantees are effectively subordinated to the Issuers’ and the Guarantor’s existing and future secured indebtedness to the extent of the collateral securing such indebtedness. All of our senior unsecured notes and the related guarantees are also effectively subordinated to all indebtedness and other liabilities of the Issuers’ subsidiaries other than the Guarantor.

The indentures governing our senior unsecured notes described above restrict the payment of cash distributions, the purchase of equity interests or the purchase, redemption, defeasance or acquisition of debt subordinated to the senior unsecured notes. The indentures also restrict the incurrence of debt or the issuance of disqualified stock, as defined in the indentures, with certain exceptions. In addition, the indentures require that on each quarterly determination date we and the guarantor of the

notes (currently only Icahn Enterprises Holdings) maintain certain minimum financial ratios, as defined therein. The indentures also restrict the creation of liens, mergers, consolidations and sales of substantially all of our assets, and transactions with affiliates.

As of December 31, 2018 and 2017, we were in compliance with all covenants, including maintaining certain minimum financial ratios, as defined in the indentures. Additionally, as of December 31, 2018, based on covenants in the indentures governing our senior unsecured notes, we are permitted to incur approximately $2.0 billion of additional indebtedness.

Reporting Segments

Energy

CVR Energy's debt primarily consists of a $500 million second lien senior unsecured note (issued by CVR Refining) and a $645 million senior secured note (issued by CVR Partners) maturing in 2022 and 2023, respectively, and with interest rates of 6.50% and 9.25%, respectively. Interest for each of these notes are accrued and paid based on contractual terms.

The second lien senior unsecured notes were fully and unconditionally guaranteed by CVR Refining and each of its' finance subsidiaries' existing domestic subsidiaries on a joint and several basis as of December 31, 2018. On January 29, 2019, the second lien senior unsecured notes were amended such that CVR Refining was replaced by CVR Energy as the primary guarantor, on a senior unsecured basis. The senior secured notes are guaranteed on a senior secured basis by all of CVR Partner's existing subsidiaries. CVR Energy is not a guarantor of these notes. The indentures governing these notes contain certain covenants that restrict the ability of the issuers and subsidiary guarantors to issue debt, incur or otherwise cause liens to exist on any of their property or assets, declare or pay dividends, repurchase equity, make payments on subordinated or unsecured debt, make certain investments, sell certain assets, merge, consolidate with or into another entity, or sell all or substantially all of their assets or enter into certain transactions with affiliates.

As of December 31, 2018 and 2017, total availability under CVR Refining and CVR Partners variable rate asset based revolving credit facilities aggregated $444 million and $382 million, respectively. CVR Refining also had $6 million and $28 million of letters of credit outstanding as of December 31, 2018 and 2017.

Automotive

Icahn Automotive's debt primarily consists of an asset-based revolving credit facility and a first in-last out revolving credit facility, each with variable interest rates. Icahn Automotive debt outstanding under these credit facilities was $370 million and $337 million as of December 31, 2018 and 2017, respectively, with maturity dates ranging from 2018 and 2022. Interest for each of these notes are accrued and paid based on contractual terms. The weighted average interest rate on these notes was 4.37% and 3.58% as of December 31, 2018 and 2017, respectively. Substantially all of Icahn Automotive's assets are pledged as collateral under the above credit facilities.

As of December 31, 2018 and 2017, there was availability under revolving credit facilities of $90 million and $75 million, respectively. Icahn Automotive also had $40 million and $33 million of letters of credit outstanding as of December 31, 2018 and 2017.

Food Packaging

Viskase's debt primarily consists of a credit agreement providing for a senior secured term loan facility issued in 2014 and maturing in 2021. Interest for this note is accrued and paid based on contractual terms. The interest rate on this note was 6.05% and 4.88% as of December 31, 2018 and 2017, respectively.

Covenants

All of our subsidiaries are currently in compliance with all covenants and restrictions as described in the various executed agreements and contracts with respect to each debt instrument. These covenants include limitations on indebtedness, liens, investments, acquisitions, asset sales, dividends and other restricted payments and affiliate and extraordinary transactions.

Non-Cash Charges to Interest Expense

The amortization of deferred financing costs and debt discounts and premiums included in interest expense in the consolidated statements of operations were $5 million, $10 million and $14 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Consolidated Maturities

The following is a summary of the maturities of our debt:



Year	Amount
	(in millions)
2019	$	27
2020	1,718
2021	620
2022	3,059
2023	648
Thereafter	1,280
	7,352
Unamortized discounts, premiums and deferred financing fees	(26		)
Total Debt	$	7,326

Net Income Per LP Unit

12 Months Ended

Dec. 31, 2018

Earnings Per Unit [Abstract]

Net Income Per LP Unit

Net Income Per LP Unit.

The components of the computation of basic and diluted income (loss) per LP unit from continuing and discontinued operations of Icahn Enterprises are as follows:



	Year Ended December 31,
	2018			2017		2016
	(in millions, except per unit data)
Net (loss) income attributable to Icahn Enterprises from continuing operations	$	(213	)	$	2,273	$	(1,127	)
Net (loss) income attributable to Icahn Enterprises from continuing operations allocated to limited partners (98.01% allocation)	$	(209	)	$	2,228	$	(1,105	)

Net income (loss) attributable to Icahn Enterprises from discontinued operations	$	1,720		$	157	$	(1	)
Less: net loss attributable to Icahn Enterprises from discontinued operations allocated 100% to general partner	598			—		—
Net income (loss) attributable to Icahn Enterprises from discontinued operations allocable to limited partners	$	2,318		$	157	$	(1	)
Net income (loss) attributable to Icahn Enterprises from discontinued operations allocated to limited partners (98.01% allocation)	$	2,272		$	154	$	(1	)

Basic and diluted income (loss) per LP unit:
Continuing operations	$	(1.16	)	$	13.84	$	(8.07	)
Discontinued operations	12.62			0.96		0.00
	$	11.46		$	14.80	$	(8.07	)
Basic and diluted weighted average LP units outstanding	180			161		137

GP Allocation

As disclosed in Note 2, "Basis of Presentation and Summary of Significant Accounting Policies - Acquisition, Investments and Disposition of Entities under Common Control," upon the sale of common control entities, such as Federal-Mogul and ARI, a portion of the gain or loss on the sale is first allocated to the general partner in order to restore the general partners' capital account for cumulative charges or credits relating to periods prior to our obtaining a controlling interest in such entities from Mr. Icahn and his affiliates. After such general partner allocation, the remaining gain is allocated among our general partner and limited partners, in accordance with their respective ownership percentages.

LP Unit Transactions

Unit Distributions

During each of the years ended December 31, 2018, 2017 and 2016, we declared four quarterly distributions. Depositary unitholders were given the option to make an election to receive the distributions in either cash or additional depositary units. If a holder did not make an election, it was automatically deemed to have elected to receive the distributions in cash. As a result, during each of the years ended December 31, 2018, 2017 and 2016, we distributed an aggregate 17,778,950, 17,644,152 and 12,574,723, respectively, of Icahn Enterprises' depositary units to those depositary unitholders who elected to receive such distributions in additional depositary units.

2017 Incentive Plan

During the years ended December 31, 2018 and 2017, Icahn Enterprises distributed an aggregate of 22,840 and 7,902, respectively, depositary units, net of payroll withholdings, with respect to certain restricted depositary units and deferred unit awards that vested during the period in connection with the Icahn Enterprises L.P. 2017 Long Term Incentive Plan (the "2017 Incentive Plan"). The aggregate impact of the 2017 Incentive Plan is not material with respect to our consolidated financial statements, including the calculation of potentially dilutive units and diluted income per LP unit.

Rights Offering

In January 2017, Icahn Enterprises commenced a rights offering entitling holders of the rights to acquire newly issued depositary units of Icahn Enterprises. In connection with this rights offering, we received aggregate proceeds of $600 million in 2017 from depositary unitholders and an additional $12 million from our general partner in order to maintain its aggregate 1.99% interest in us. As a result, we distributed an aggregate of 11,171,104 newly issued depositary units.

Segment and Geographic Reporting

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Segment and Geographic Reporting

Segment and Geographic Reporting.

We report segment information based on the various industries in which our businesses operate and how we manage those businesses in accordance with our investment strategies, which may include: identifying and acquiring undervalued assets and businesses, often through the purchase of distressed securities; increasing value through management, financial or other operational changes; and managing complex legal, regulatory or financial issues, which may include bankruptcy or insolvency, environmental, zoning, permitting and licensing issues. Therefore, although many of our businesses are operated under separate local management, certain of our businesses are grouped together when they operate within a similar industry, comprising similarities in products, customers, production processes and regulatory environments, and when such businesses, when considered together, may be managed in accordance with one or more investment strategies specific to those businesses. Among other measures, we assess and measure segment operating results based on net income from continuing operations attributable to Icahn Enterprises and Icahn Enterprises Holdings. Certain terms of financings for certain of our businesses impose restrictions on the business' ability to transfer funds to us, including restrictions on dividends, distributions, loans and other transactions.

Condensed Statements of Operations

Icahn Enterprises' condensed statements of operations by reporting segment are presented below. Icahn Enterprises Holdings' condensed statements of operations are substantially the same, with immaterial differences relating to our Holding Company's interest expense.



	Year Ended December 31, 2018
	Investment			Energy			Automotive			Food Packaging			Metals			Real Estate			Home Fashion			Mining			Railcar			Holding Company			Consolidated
	(in millions)
Revenues:
Net sales	$	—		$	7,124		$	2,295		$	395		$	466		$	22		$	171		$	103		$	—		$	—		$	10,576
Other revenues from operations	—			—			563			—			—			84			—			—			—			—			647
Net gain (loss) from investment activities	635			—			—			—			—			—			—			—			—			(313		)	322
Interest and dividend income	104			2			—			1			—			16			—			1			—			24			148
(Loss) gain on disposition of assets, net	—			(6		)	(1		)	—			—			89			—			(3		)	5			—			84
Other (loss) income, net	(2		)	15			(1		)	(17		)	1			1			—			5			—			(2		)	—
	737			7,135			2,856			379			467			212			171			106			5			(291		)	11,777
Expenses:
Cost of goods sold	—			6,453			1,502			316			441			18			144			73			—			—			8,947
Other expenses from operations	—			—			474			—			—			54			—			—			1			—			529
Selling, general and administrative	12			138			1,051			57			19			22			34			27			1			25			1,386
Restructuring, net	—			5			5			9			—			—			2			—			—			—			21
Impairment	—			—			90			—			1			—			1			—			—			—			92
Interest expense	46			104			16			16			—			1			1			3			—			337			524
	58			6,700			3,138			398			461			95			182			103			2			362			11,499
Income (loss) from continuing operations before income tax (expense) benefit	679			435			(282		)	(19		)	6			117			(11		)	3			3			(653		)	278
Income tax (expense) benefit	—			(56		)	52			4			(1		)	(5		)	—			(2		)	(2		)	14			4
Net income (loss) from continuing operations	679			379			(230		)	(15		)	5			112			(11		)	1			1			(639		)	282
Less: net income (loss) from continuing operations attributable to non-controlling interests	360			141			—			(3		)	—			—			—			(2		)	—			(1		)	495
Net income (loss) from continuing operations attributable to Icahn Enterprises	$	319		$	238		$	(230	)	$	(12	)	$	5		$	112		$	(11	)	$	3		$	1		$	(638	)	$	(213	)

Supplemental information:
Capital expenditures	$	—		$	102		$	66		$	25		$	21		$	13		$	5		$	40		$	—		$	—		$	272
Depreciation and amortization	$	—		$	278		$	92		$	26		$	18		$	19		$	8		$	6		$	—		$	—		$	447



	Year Ended December 31, 2017
	Investment			Energy			Automotive			Food Packaging			Metals			Real Estate		Home Fashion			Mining			Railcar			Holding Company			Consolidated
	(in millions)
Revenues:
Net sales	$	—		$	5,988		$	2,225		$	392		$	409		$	15	$	183		$	94		$	—		$	—		$	9,306
Other revenues from operations	—			—			498			—			—			72		—			—			173			—			743
Net gain from investment activities	241			—			—			—			—			—		—			—			—			61			302
Interest and dividend income	106			1			—			—			—			7		—			1			—			12			127
(Loss) gain on disposition of assets, net	—			(3		)	5			—			—			496		—			—			1,664			1			2,163
Other (loss) income, net	(50		)	2			—			(3		)	(1		)	38		—			(2		)	—			(6		)	(22		)
	297			5,988			2,728			389			408			628		183			93			1,837			68			12,619
Expenses:
Cost of goods sold	—			5,799			1,540			297			389			11		162			60			—			—			8,258
Other expenses from operations	—			—			438			—			—			46		—			—			34			—			518
Selling, general and administrative	13			143			919			61			19			18		39			14			10			33			1,269
Restructuring, net	—			—			—			2			1			—		1			—			—			—			4
Impairment	—			—			15			1			—			2		1			—			68			—			87
Interest expense	166			109			13			13			—			2		—			6			23			323			655
	179			6,051			2,925			374			409			79		203			80			135			356			10,791
Income (loss) from continuing operations before income tax benefit (expense)	118			(63		)	(197		)	15			(1		)	549		(20		)	13			1,702			(288		)	1,828
Income tax benefit (expense)	—			338			146			(21		)	(43		)	—		—			(3		)	(531		)	643			529
Net income (loss) from continuing operations	118			275			(51		)	(6		)	(44		)	549		(20		)	10			1,171			355			2,357
Less: net income (loss) from continuing operations attributable to non-controlling interests	38			46			—			(1		)	—			—		—			1			—			—			84
Net income (loss) from continuing operations attributable to Icahn Enterprises	$	80		$	229		$	(51	)	$	(5	)	$	(44	)	$	549	$	(20	)	$	9		$	1,171		$	355		$	2,273

Supplemental information:
Capital expenditures	$	—		$	120		$	86		$	26		$	30		$	9	$	5		$	38		$	2		$	—		$	316
Depreciation and amortization	$	—		$	278		$	111		$	25		$	20		$	20	$	8		$	5		$	7		$	—		$	474



	Year Ended December 31, 2016
	Investment			Energy			Automotive			Food Packaging			Metals			Real Estate		Home Fashion			Mining			Railcar		Holding Company			Consolidated
	(in millions)
Revenues:
Net sales	$	—		$	4,782		$	2,079		$	329		$	267		$	17	$	195		$	71		$	—	$	—		$	7,740
Other revenues from operations	—			—			422			—			—			71		—			—			347		—			840
Net (loss) gain from investment activities	(1,388		)	5			—			—			—			—		—			—			—		10			(1,373		)
Interest and dividend income	112			1			—			—			—			—		—			2			—		9			124
Gain on disposition of assets, net	—			—			1			—			1			1		—			—			3		—			6
Other income (loss), net	53			(5		)	1			(1		)	1			—		1			(10		)	—		2			42
	(1,223		)	4,783			2,503			328			269			89		196			63			350		21			7,379
Expenses:
Cost of goods sold	—			4,637			1,430			249			284			13		168			56			—		—			6,837
Other expenses from operations	—			—			430			—			—			46		—			—			155		—			631
Selling, general and administrative	34			138			648			48			18			18		38			22			16		21			1,001
Restructuring	—			—			—			3			2			—		—			—			—		—			5
Impairment	—			574			1			—			1			5		2			—			—		3			586
Interest expense	230			83			7			12			—			2		—			7			62		289			692
	264			5,432			2,516			312			305			84		208			85			233		313			9,752
(Loss) income from continuing operations before income tax benefit (expense)	(1,487		)	(649		)	(13		)	16			(36		)	5		(12		)	(22		)	117		(292		)	(2,373		)
Income tax benefit (expense)	—			45			32			(8		)	16			—		—			(2		)	—		5			88
Net (loss) income from continuing operations	(1,487		)	(604		)	19			8			(20		)	5		(12		)	(24		)	117		(287		)	(2,285		)
Less: net (loss) income from continuing operations attributable to non-controlling interests	(883		)	(277		)	—			2			—			—		—			(5		)	5		—			(1,158		)
Net (loss) income from continuing operations attributable to Icahn Enterprises	$	(604	)	$	(327	)	$	19		$	6		$	(20	)	$	5	$	(12	)	$	(19	)	$	112	$	(287	)	$	(1,127	)

Supplemental information:
Capital expenditures	$	—		$	133		$	37		$	18		$	5		$	1	$	11		$	22		$	20	$	—		$	247
Depreciation and amortization	$	—		$	258		$	98		$	20		$	22		$	22	$	8		$	6		$	92	$	—		$	526

Disaggregation of Revenue

In addition to the condensed statements of operations by reporting segment above, we provide additional disaggregated revenue information for certain reportable segments below. Refer to Note 2, "Basis of Presentation and Summary of Significant Accounting Policies," for certain revenue recognition policies with respect to the following reporting segments.

Energy

Disaggregated revenue for our Energy segment net sales is presented below:



	Year Ended December 31,
	2018		2017		2016
	(in millions)
Petroleum products	$	6,773	$	5,657	$	4,426
Nitrogen fertilizer products	351		331		356
	$	7,124	$	5,988	$	4,782

Automotive

Disaggregated revenue for our Automotive segment net sales and other revenues from operations is presented below:



	Year Ended December 31,
	2018		2017		2016
	(in millions)
Automotive services	$	1,321	$	1,186	$	998
Aftermarket parts sales	1,537		1,537		1,503
	$	2,858	$	2,723	$	2,501

As discussed in Note 1, "Description of Business," we adopted FASB ASC Topic 606 effective January 1, 2018 which affected the revenue recognized on the of sale of goods on a drop ship basis. Beginning in 2018, revenue from drop ship sales is recorded on a net basis and for prior periods was recorded on a gross basis. Prior periods were not adjusted for the adoption of FASB ASC Topic 606 in our consolidated financial statements. For the year ended December 31, 2018, aftermarket parts sales (which is included in net sales in our consolidated statements of operations) and cost of goods sold would each have been higher by $62 million under prior accounting principles.

Condensed Balance Sheets

Icahn Enterprises' condensed balance sheets by reporting segment are presented below. Icahn Enterprises Holdings' condensed balance sheets are substantially the same, with immaterial differences relating to our Holding Company's other assets, debt and equity attributable to Icahn Enterprises Holdings.



	December 31, 2018
	Investment		Energy		Automotive		Food Packaging		Metals		Real Estate		Home Fashion		Mining		Railcar		Holding Company			Consolidated
	(in millions)
ASSETS
Cash and cash equivalents	$	5	$	668	$	43	$	46	$	20	$	39	$	1	$	—	$	—	$	1,834		$	2,656
Cash held at consolidated affiliated partnerships and restricted cash	2,648		—		—		1		1		26		2		—		—		4			2,682
Investments	6,867		84		59		—		—		15		—		—		—		1,312			8,337
Accounts receivable, net	—		169		149		74		48		3		31		—		—		—			474
Inventories, net	—		380		1,203		93		39		—		64		—		—		—			1,779
Property, plant and equipment, net	—		3,042		941		169		115		367		69		—		—		—			4,703
Goodwill and intangible assets, net	—		278		412		32		2		24		—		—		—		—			748
Assets held for sale	—		33		—		—		1		—		—		299		—		—			333
Other assets	1,230		84		217		96		7		34		5		—		—		11			1,684
Total assets	$	10,750	$	4,738	$	3,024	$	511	$	233	$	508	$	172	$	299	$	—	$	3,161		$	23,396
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	$	40	$	1,025	$	905	$	164	$	56	$	41	$	35	$	—	$	—	$	178		$	2,444
Securities sold, not yet purchased, at fair value	468		—		—		—		—		—		—		—		—		—			468
Due to brokers	141		—		—		—		—		—		—		—		—		—			141
Liabilities held for sale	—		—		—		—		—		—		—		112		—		—			112
Debt	—		1,170		372		273		—		2		4		—		—		5,505			7,326
Total liabilities	649		2,195		1,277		437		56		43		39		112		—		5,683			10,491

Equity attributable to Icahn Enterprises	5,066		1,243		1,747		55		177		465		133		165		—		(2,522		)	6,529
Equity attributable to non-controlling interests	5,035		1,300		—		19		—		—		—		22		—		—			6,376
Total equity	10,101		2,543		1,747		74		177		465		133		187		—		(2,522		)	12,905
Total liabilities and equity	$	10,750	$	4,738	$	3,024	$	511	$	233	$	508	$	172	$	299	$	—	$	3,161		$	23,396



	December 31, 2017
	Investment		Energy		Automotive		Food Packaging		Metals		Real Estate		Home Fashion		Mining		Railcar		Holding Company			Discontinued Operations		Consolidated
	(in millions)
ASSETS
Cash and cash equivalents	$	17	$	482	$	52	$	16	$	24	$	32	$	—	$	15	$	—	$	526		$	—	$	1,164
Cash held at consolidated affiliated partnerships and restricted cash	734		—		—		2		5		2		4		—		—		—			—		747
Investments	9,532		83		—		—		—		16		—		—		—		384			—		10,015
Accounts receivable, net	—		179		128		78		40		3		35		10		—		—			—		473
Inventories, net	—		364		1,145		92		33		—		66		30		—		—			—		1,730
Property, plant and equipment, net	—		3,234		958		170		110		454		72		188		—		—			—		5,186
Goodwill and intangible assets, net	—		298		505		36		3		29		—		—		—		—			—		871
Assets held for sale	—		—		—		—		2		—		—		—		14		—			10,247		10,263
Other assets	516		60		223		93		9		395		6		22		—		28			—		1,352
Total assets	$	10,799	$	4,700	$	3,011	$	487	$	226	$	931	$	183	$	265	$	14	$	938		$	10,247	$	31,801
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	$	1,302	$	1,125	$	944	$	172	$	43	$	63	$	34	$	45	$	—	$	243		$	—	$	3,971
Securities sold, not yet purchased, at fair value	1,023		—		—		—		—		—		—		—		—		—			—		1,023
Due to brokers	1,057		—		—		—		—		—		—		—		—		—			—		1,057
Liabilities held for sale	—		—		—		—		—		—		—		—		—		—			7,010		7,010
Debt	—		1,166		340		273		1		22		5		58		—		5,507			—		7,372
Total liabilities	3,382		2,291		1,284		445		44		85		39		103		—		5,750			7,010		20,433

Equity attributable to Icahn Enterprises	3,052		1,098		1,727		28		182		846		144		138		14		(4,821		)	2,698		5,106
Equity attributable to non-controlling interests	4,365		1,311		—		14		—		—		—		24		—		9			539		6,262
Total equity	7,417		2,409		1,727		42		182		846		144		162		14		(4,812		)	3,237		11,368
Total liabilities and equity	$	10,799	$	4,700	$	3,011	$	487	$	226	$	931	$	183	$	265	$	14	$	938		$	10,247	$	31,801

Geographic Information

The following table presents our consolidated geographic net sales from external customers, other revenues from operations and property, plant and equipment, net for the periods indicated:



	Net Sales						Other Revenues From Operations						Property, Plant and Equipment, Net
	Year Ended December 31,						Year Ended December 31,						December 31,
	2018		2017		2016		2018		2017		2016		2018		2017
	(in millions)
United States	$	10,172	$	8,893	$	7,412	$	629	$	716	$	791	$	4,432	$	4,776
International	404		413		328		18		27		49		271		410
	$	10,576	$	9,306	$	7,740	$	647	$	743	$	840	$	4,703	$	5,186

Geographic locations for net sales and other revenues from operations are based on locations of the customers and geographic locations for property, plant, and equipment are based on the locations of the assets.

Discontinued Operations (Notes)

12 Months Ended

Dec. 31, 2018

Discontinued Operations. [Abstract]

Discontinued Operations

Discontinued Operations.

As discussed in Note 1, "Description of Business," we operated discontinued operations previously included in our Automotive and Railcar segments and our former Gaming segment.

Income from discontinued operations is summarized as follows:



	Year Ended December 31, 2018												Year Ended December 31, 2017											Year Ended December 31, 2016
	Automotive			Gaming			Railcar			Total			Automotive			Gaming			Railcar		Total			Automotive			Gaming			Railcar			Total
Revenues:	(in millions)
Net sales	$	5,993		$	—		$	228		$	6,221		$	7,720		$	—		$	265	$	7,985		$	7,341		$	—		$	430		$	7,771
Other revenues from operations	—			679			213			892			—			898			197		1,095			—			943			175			1,118
Net gain on investment activities	—			—			—			—			—			—			2		2			—			—			—			—
Interest and dividend income	2			1			2			5			6			1			2		9			4			1			2			7
Gain (loss) on disposition of assets, net	65			—			—			65			7			(1		)	—		6			8			—			—			8
Other income, net	5			1			13			19			31			27			3		61			31			3			5			39
	6,065			681			456			7,202			7,764			925			469		9,158			7,384			947			612			8,943
Expenses:
Cost of goods sold	4,999			—			215			5,214			6,553			—			249		6,802			6,215			—			366			6,581
Other expenses from operations	—			311			114			425			—			425			100		525			—			460			68			528
Selling, general and administrative	601			238			40			879			862			371			37		1,270			845			432			32			1,309
Restructuring, net	13			—			—			13			21			—			—		21			27			—			—			27
Impairment	2			—			4			6			25			—			—		25			17			106			—			123
Interest expense	137			4			19			160			154			11			22		187			150			13			23			186
	5,752			553			392			6,697			7,615			807			408		8,830			7,254			1,011			489			8,754
Income (loss) from discontinued operations before gain (loss) on sale and income tax (expense) benefit	313			128			64			505			149			118			61		328			130			(64		)	123			189
Gain (loss) on sale of discontinued operations	251			779			400			1,430			—			(3		)	—		(3		)	—			—			—			—
Income (loss) from discontinued operations before income tax (expense) benefit	564			907			464			1,935			149			115			61		325			130			(64		)	123			189
Income tax (expense) benefit	(69		)	(89		)	(13		)	(171		)	(33		)	(93		)	35		(91		)	(43		)	(24		)	(57		)	(124		)
Income (loss) from discontinued operations	495			818			451			1,764			116			22			96		234			87			(88		)	66			65
Less: income from discontinued operations attributable to non-controlling interests	7			17			20			44			11			13			53		77			24			14			28			66
Income (loss) from discontinued operations attributable to Icahn Enterprises	$	488		$	801		$	431		$	1,720		$	105		$	9		$	43	$	157		$	63		$	(102	)	$	38		$	(1	)

Supplemental information:
Capital expenditures	$	303		$	58		$	125		$	486		$	393		$	112		$	171	$	676		$	381		$	85		$	113		$	579
Depreciation and amortization	$	100		$	19		$	47		$	166		$	397		$	73		$	58	$	528		$	375		$	71		$	42		$	488

As of December 31, 2018, assets and liabilities held for sale primarily consists of property, plant and equipment, net for operations not classified as discontinued operations. As of December 31, 2017, assets and liabilities held for sale were primarily related to discontinued operations, all of which were sold during 2018. Assets and liabilities held for sale as of December 31, 2017 consists of the following:



	December 31, 2017
	Automotive		Gaming		Railcar		Total
Assets Held For Sale	(in millions)
Cash and cash equivalents	$	315	$	103	$	100	$	518
Restricted cash	4		16		19		39
Investments	324		7		23		354
Accounts receivable, net	1,182		11		44		1,237
Inventories, net	1,456		—		54		1,510
Property, plant and equipment, net	2,545		792		1,199		4,536
Goodwill	941		—		7		948
Intangible assets, net	517		74		—		591
Other assets	394		93		27		514
Assets held for sale (discontinued operations)	$	7,678	$	1,096	$	1,473	$	10,247
Other assets held for sale							16
Total assets held for sale							$	10,263
Liabilities Held For Sale
Accounts payable, accrued expenses and other liabilities	$	1,718	$	142	$	62	$	1,922
Deferred tax liability	—		—		192		192
Post-retirement benefit liability	1,075		—		8		1,083
Debt	3,130		137		546		3,813
Liabilities held for sale (discontinued operations)	$	5,923	$	279	$	808	$	7,010

Other assets held for sale in the table above primarily consists of property, plant and equipment, net for other operations not classified as discontinued operations.

Income Taxes

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes.

The difference between the book basis and the tax basis of our net assets, not directly subject to income taxes, is as follows:



	Icahn Enterprises						Icahn Enterprises Holdings
	December 31,						December 31,
	2018			2017			2018			2017
	(in millions)						(in millions)
Book basis of net assets	$	6,529		$	5,106		$	6,557		$	5,133
Book/tax basis difference	(1,940		)	(450		)	(1,940		)	(450		)
Tax basis of net assets	$	4,589		$	4,656		$	4,617		$	4,683

Income (loss) from continuing operations before income tax expense (benefit) is as follows:



	Year Ended December 31,
	2018			2017		2016
	(in millions)
Domestic	$	290		$	1,798	$	(2,370	)
International	(12		)	30		(3		)
	$	278		$	1,828	$	(2,373	)

Income tax benefit (expense) attributable to continuing operations is as follows:



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Current:
Domestic	$	(11	)	$	(15	)	$	(28	)
International	(4		)	(13		)	(18		)
Total current	(15		)	(28		)	(46		)
Deferred:
Domestic	20			544			131
International	(1		)	13			3
Total deferred	19			557			134
	$	4		$	529		$	88

A reconciliation of the income tax benefit (expense) calculated at the federal statutory rate to income tax benefit (expense) on continuing operations as shown in the consolidated statements of operations is as follows:



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Income tax benefit (expense) at U.S. statutory rate	$	(58	)	$	(640	)	$	831
Tax effect from:
Valuation allowance	(4		)	529			(46		)
Non-controlling interest	26			(6		)	(6		)
Goodwill impairment	(18		)	—			(226		)
Stock dispositions	69			—			—
Income not subject to taxation	14			220			(440		)
Enactment of U.S. tax legislation, net of valuation allowance	—			392			—
Other	(25		)	34			(25		)
Income tax benefit (expense)	$	4		$	529		$	88

The tax effect of significant differences representing deferred tax assets (liabilities) (the difference between financial statement carrying value and the tax basis of assets and liabilities) is as follows:



	December 31,
	2018			2017
	(in millions)
Deferred tax assets:
Property, plant and equipment	$	17		$	61
Net operating loss	791			711
Tax credits	46			71
Capital loss	50			—
Post-retirement benefits, including pensions	—			162
Other	82			248
Total deferred tax assets	986			1,253
Less: Valuation allowance	(518		)	(483		)
Net deferred tax assets	$	468		$	770

Deferred tax liabilities:
Property, plant and equipment	$	(129	)	$	(235	)
Intangible assets	(33		)	(115		)
Investment in partnerships	(681		)	(774		)
Investment in U.S. subsidiaries	(184		)	(184		)
Other	(80		)	(119		)
Total deferred tax liabilities	(1,107		)	(1,427		)
	$	(639	)	$	(657	)

We recorded deferred tax assets and deferred tax liabilities of $37 million and $676 million, respectively, as of December 31, 2018 and $75 million and $732 million, respectively, as of December 31, 2017. Deferred tax assets are included in other assets in our consolidated balance sheets.

We analyze all positive and negative evidence to consider whether it is more likely than not that all of the deferred tax assets will be realized. Projected future income, tax planning strategies and the expected reversal of deferred tax liabilities are considered in making this assessment. As of December 31, 2018 we had a valuation allowance of approximately $518 million primarily related to tax loss and credit carryforwards and other deferred tax assets. The current and future provisions for income taxes may be significantly impacted by changes to valuation allowances. These allowances will be maintained until it is more likely than not that the deferred tax assets will be realized. For the year ended December 31, 2018, the valuation allowance on deferred tax assets increased by $35 million. The increase was primarily attributable to capital loss and state net operating loss carryforwards.

At December 31, 2018, American Entertainment Properties Corp. ("AEPC"), a wholly-owned corporate subsidiary of Icahn Enterprises and Icahn Enterprises Holdings, which includes all or parts of our Automotive, Metals, Home Fashion and Real Estate segments had U.S federal net operating loss carryforwards of approximately $2.0 billion with expiration dates from 2029 through 2037.

At December 31, 2018, CVR Energy had state income tax credits of $35 million, which are available to reduce future state income taxes. These credits, if not used, will expire beginning in 2033.

At December 31, 2018, Viskase had U.S. federal net operating loss carryforwards of $68 million which will begin expiring in the year 2024 and forward, and foreign net operating loss carryforwards of $19 million with unlimited carryforward period and $5 million with a five-year carryforward period.

On August 1, 2018, CVR Energy completed an exchange offer whereby CVR Refining's public unitholders tendered a total of 21,625,106 common units of CVR Refining in exchange for 13,699,549 shares of CVR Energy common stock. As a

result of the exchange offer, AEPC owned less than 80% of the common stock of CVR Energy and CVR Energy deconsolidated from the AEPC consolidated federal income tax group. Beginning with the tax period after the exchange, CVR Energy became the parent of a new consolidated group for U.S. federal income tax purposes and will file and pay its federal income tax obligations directly to the Internal Revenue Service.

As of December 31, 2018, we have not provided taxes on approximately $54 million of undistributed earnings in foreign subsidiaries which are deemed to be indefinitely reinvested. If at some future date these earnings cease to be permanently reinvested, we may be subject to foreign income and withholding taxes upon repatriation of such amounts.

Enactment of U.S. Tax Legislation

On December 22, 2017, The Tax Cuts and Jobs Act (the "Tax Legislation") was enacted in the United States, significantly revising certain U.S. corporate income tax provisions; including, among other items, a reduction of the U.S. corporate rate from 35% to 21%, effective for tax year beginning after December 31, 2017; the transition of U.S. international taxation from a worldwide tax system to a territorial system; and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of December 31, 2017, (or, if greater, November 2, 2017) of a “specified foreign corporation” which includes controlled foreign corporations and other foreign corporations which have at least one U.S. corporate shareholder that owns 10% or more of the value or voting power of such foreign corporation. We estimated the impact of the Tax Legislation on our income tax provision for the year ended December 31, 2017 in accordance with our understanding of the Tax Legislation and guidance available at the date of this filing and as a result have recorded adjustments to the various tax balances, current, long-term and deferred tax assets and liabilities, all during the fourth quarter of 2017, the period in which the Tax Legislation was enacted. The actual amounts recorded in 2017 were not significantly different from the provisional amounts estimated in the prior year tax provision.

In January 2018, the FASB released guidance on the accounting for tax on the global intangible low-taxed income (“GILTI”) provisions of The Tax Legislation. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. We currently estimate no additional tax due in 2018 from the GILTI inclusion.

Under the Tax Legislation, an entity must pay a Base Erosion Anti-Abuse Tax ("BEAT") if the BEAT is greater than its regular tax liability. We currently estimate no additional tax due in 2018 pursuant to the BEAT provisions.

Accounting for Uncertainty in Income Taxes

A summary of the changes in the gross amounts of unrecognized tax benefits for the years ended December 31, 2018, 2017 and 2016 are as follows:



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Balance at January 1	$	34		$	52		$	56
Addition based on tax positions related to the current year	—			—			2
Increase for tax positions of prior years	6			—			—
Decrease for tax positions of prior years	—			(3		)	(1		)
Decrease for statute of limitation expiration	(6		)	(15		)	(5		)
Balance at December 31	$	34		$	34		$	52

At December 31, 2018, 2017 and 2016, we had unrecognized tax benefits of $34 million, $34 million and $52 million, respectively. Of these totals, $30 million, $28 million and $37 million represent the amount of unrecognized tax benefits that if recognized, would affect the annual effective tax rate in the respective periods. The total unrecognized tax benefits differ from the amount which would affect the effective tax rate primarily due to the impact of valuation allowances.

During the next 12 months, CVR Energy believes that it is reasonably possible that unrecognized tax benefits of CVR Energy may decrease by approximately $3 million due to statute expirations. We do not anticipate any significant changes to the amount of our unrecognized tax benefits in our other business segments during the next 12 months.

We recognize interest and penalties accrued related to unrecognized tax benefits as a component of income tax expense. We recorded $1 million, $2 million and $9 million as of December 31, 2018, 2017 and 2016, respectively, in liabilities for tax related net interest and penalties in our consolidated balance sheets. Income tax (benefit) expense related to interest and

penalties were $(1) million, $(7) million and $1 million for the years December 31, 2018, 2017 and 2016, respectively. We or certain of our subsidiaries file income tax returns in the U.S. federal jurisdiction, various state jurisdictions and various non-U.S. jurisdictions. We and our subsidiaries are no longer subject to U.S. federal tax examinations for years before 2015 or state and local examinations for years before 2013, with limited exceptions.

Changes in Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2018

Changes in Accumulated Other Comprehensive Loss [Abstract]

Accumulated Other Comprehensive Income (Loss) [Text Block]

Changes in Accumulated Other Comprehensive Loss.

Changes in accumulated other comprehensive loss consists of the following:



	Post-Retirement Benefits, Net of Tax			Hedge Instruments, Net of Tax			Translation Adjustments and Other, Net of Tax			Total
	(in millions)
Balance, December 31, 2017	$	(572	)	$	(15	)	$	(797	)	$	(1,384	)
Other comprehensive income (loss) before reclassifications, net of tax	1			(3		)	(86		)	(88		)
Reclassifications from accumulated other comprehensive income to earnings	20			—			—			20
Other comprehensive income (loss), net of tax	21			(3		)	(86		)	(68		)
Dispositions of consolidated subsidiaries	504			18			846			1,368
Balance, December 31, 2018	$	(47	)	$	—		$	(37	)	$	(84	)

Dispositions of consolidated subsidiaries in the table above is included in changes in subsidiary equity and other in the consolidated statement of changes in equity.

Other Income (Loss), Net

12 Months Ended

Dec. 31, 2018

Other (Loss) Income, Net [Abstract]

Other (Loss) Income, Net

Other Income, Net.

Other income, net consists of the following:



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Other derivative (loss) income	$	(1	)	$	(41	)	$	66
Dividend expense	(2		)	(10		)	(14		)
Loss on extinguishment of debt	—			(12		)	(5		)
Equity earnings from non-consolidated affiliates	7			1			—
Foreign currency transaction (loss) income	(1		)	1			(3		)
Tax settlement gain	—			38			—
Non-service pension and other post-retirement benefits expense	(8		)	(4		)	(4		)
Other	5			5			2
	$	—		$	(22	)	$	42

Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies.

Environmental Matters

Due to the nature of our business, certain of our subsidiaries' operations are subject to numerous existing and proposed laws and governmental regulations designed to protect the environment, particularly regarding plant wastes and emissions and solid waste disposal. Our consolidated environmental liabilities were $37 million and $34 million as of December 31, 2018 and December 31, 2017, respectively, primarily within our Energy and Metals segments and which are included in accrued expenses and other liabilities in our consolidated balance sheets. In addition to the above, Federal-Mogul had environmental liabilities of $16 million as of December 31, 2017, which is included in liabilities held for sale in our consolidated balance sheets. We do not

believe that environmental matters will have a material adverse impact on our consolidated results of operations and financial condition.

Energy

On August 21, 2018, CVR Refining received a letter from the United States Department of Justice (the “DOJ”) on behalf of the Environmental Protection Agency (the "EPA") and Kansas Department of Health and Environment (“KDHE”) alleging violations of the Clean Air Act and a 2012 Consent Decree between CVR Refining, the United States (on behalf of the EPA) and KDHE at CVR Energy's Coffeyville refinery. In September 2018, CVR Refining executed a tolling agreement with the DOJ and KDHE extending time for negotiation regarding the agencies’ allegations through March 31, 2019. At this time CVR Energy cannot reasonably estimate the potential penalties, costs, fines or other expenditures that may result from this matter or any subsequent enforcement or litigation relating thereto and, therefore, CVR Energy cannot determine if the ultimate outcome of this matter will have a material impact on its financial position, results of operations or cash flows.

As of December 31, 2018 and 2017, our Energy segment had environmental accruals of $8 million and $4 million, respectively, representing estimated costs for future remediation efforts at certain sites.

Metals

PSC Metals has been designated as a potentially responsible party ("PRP") under U.S. federal and state superfund laws with respect to certain sites with which PSC Metals may have had a direct or indirect involvement. It is alleged that PSC Metals and its subsidiaries or their predecessors transported waste to the sites, disposed of waste at the sites or operated the sites in question. In addition, one of PSC Metals' Knoxville, Tennessee locations was the subject of investigations by the State of Tennessee under the federal Superfund law. These investigations were performed by the State of Tennessee pursuant to a contract with the EPA. PSC Metals has entered into Tennessee's Voluntary Clean-Up Oversight and Assistance Program ("VOAP") and expects to enter into a settlement with the Tennessee Department of Environment and Conservation ("TDEC") in the future. Currently, PSC Metals believes that it has adequately reserved for the cost of any potential future remediation associated with its Knoxville location, but cannot fully assess the impact of all costs or liabilities associated with TDEC's investigations. With respect to all other matters in which PSC Metals has been designated as a PRP under U.S. federal and state superfund laws, PSC Metals has reviewed the nature and extent of the allegations, the number, connection and financial ability of other named and unnamed PRPs and the nature and estimated cost of the likely remedy. Based on reviewing the nature and extent of the allegations, PSC Metals has estimated its liability to remediate these other sites to be immaterial as of both December 31, 2018 and 2017. If it is determined that PSC Metals has liability to remediate those sites and that more expensive remediation approaches are required in the future, PSC Metals could incur additional obligations, which could be material to its operations.

Certain of PSC Metals' facilities are environmentally impaired in part as a result of operating practices at the sites prior to their acquisition by PSC Metals and as a result of PSC Metals' operations. PSC Metals has established procedures to periodically evaluate these sites, giving consideration to the nature and extent of the contamination. PSC Metals has provided for the remediation of these sites based upon its management's judgment and prior experience. PSC Metals has estimated the liability to remediate these sites to be $27 million and $28 million at December 31, 2018 and 2017, respectively. PSC Metals believes, based on past experience, that the vast majority of these environmental liabilities and costs will be assessed and paid over an extended period of time. PSC Metals believes that it will be able to fund such costs in the ordinary course of business. Estimates of PSC Metals' liability for remediation of a particular site and the method and ultimate cost of remediation require a number of assumptions that are inherently difficult to make, and the ultimate outcome may be materially different from current estimates. Moreover, because PSC Metals has disposed of waste materials at numerous third-party disposal facilities, it is possible that PSC Metals will be identified as a PRP at additional sites. The impact of such future events cannot be estimated at the current time.

Renewable Fuel Standards

CVR Refining is subject to the renewable fuel standards ("RFS") of the EPA that require refiners to either blend "renewable fuels" in with their transportation fuels or purchase renewable fuel credits, known as renewable identification numbers (“RINs”), in lieu of blending. CVR Refining is not able to blend the substantial majority of its transportation fuels and has to purchase RINs on the open market, as well as obtain waiver credits for cellulosic biofuels from the EPA, in order to comply with the RFS.

CVR Refining's expenses for its compliance with RFS were $60 million, $249 million and $206 million for years ended December 31, 2018, 2017 and 2016, respectively, which are included in cost of goods sold in our consolidated financial statements. CVR Refining's costs to comply with RFS include the purchased cost of RINs, the impact of recognizing CVR

Refining’s uncommitted biofuel blending obligation at fair value based on market prices at each reporting date and the valuation change of RINs purchases in excess of CVR Refining’s RFS obligation as of the reporting date. As of December 31, 2018 and 2017, CVR Refining's biofuel blending obligation was $4 million and $28 million, respectively, which is included in accrued expenses and other liabilities in our consolidated balance sheets.

Litigation

From time to time, we and our subsidiaries are involved in various lawsuits arising in the normal course of business. We do not believe that such normal routine litigation will have a material effect on our financial condition or results of operations.

Energy

CVR Energy, CVR Refining and its general partner, Icahn Enterprises and certain other affiliates and individuals have each been named in at least one of seven lawsuits filed in the Court of Chancery of the State of Delaware by purported former unitholders of CVR Refining, on behalf of themselves and an alleged class of similarly situated unitholders (the “Call Option Lawsuits”). The Call Option Lawsuits primarily allege breach of contract, tortious interference and breach of the implied covenant of good faith and fair dealing and seek monetary damages and attorneys’ fees, among other remedies, relating to CVR Energy's exercise of the call option under the CVR Refining Amended and Restated Agreement of Limited Partnership assigned to it by CVR Refining’s general partner. The Call Option Lawsuits are in the earliest stages of litigation. CVR Energy believes the Call Option Lawsuits are without merit and intends to vigorously defend against them.

Federal-Mogul

On March 3, 2017, certain purported former stockholders of Federal-Mogul Holdings Corporation filed a petition in the Delaware Court of Chancery seeking an appraisal of the value of common stock they claim to have held at the time of the January 23, 2017 merger of IEH FM Holdings, LLC into Federal-Mogul Holdings Corporation. IEH FM Holdings, LLC was a wholly-owned subsidiary of Icahn Enterprises. Federal-Mogul Holdings LLC filed an answer to the petition on March 28, 2017. A second petition for appraisal was filed by purported former stockholders of Federal-Mogul Holdings Corporation on May 1, 2017. The two cases were consolidated on May 10, 2017, captioned In re Appraisal of Federal-Mogul Holdings LLC, C.A. No. 2017-0158-AGB. In connection with this matter, we contributed $56 million to Federal-Mogul in 2018 prior to our sale of Federal-Mogul.

On April 25, 2014, a group of plaintiffs brought an action against Federal-Mogul Products, Inc. ("FM Products"), a wholly-owned subsidiary of Federal-Mogul, alleging injuries and damages associated with the discharge of chlorinated hydrocarbons by the former owner of a facility located in Kentucky. Since 1998, when FM Products acquired the facility, it has been cooperating with the applicable regulatory agencies on remediating the prior discharges pursuant to an order entered into by the facility’s former owner. FM Products negotiated a settlement agreement with plaintiff's counsel which was approved by the required number of plaintiffs and, following a fairness hearing, given final approval by the court on July 13, 2018. In connection with this matter, FM Products paid $3 million pursuant to the settlement agreement in 2018 prior to our sale of Federal-Mogul.

Other Matters

Pension Obligations

Mr. Icahn, through certain affiliates, owns 100% of Icahn Enterprises GP and approximately 91.7% of Icahn Enterprises' outstanding depositary units as of December 31, 2018. Applicable pension and tax laws make each member of a “controlled group” of entities, generally defined as entities in which there is at least an 80% common ownership interest, jointly and severally liable for certain pension plan obligations of any member of the controlled group. These pension obligations include ongoing contributions to fund the plan, as well as liability for any unfunded liabilities that may exist at the time the plan is terminated. In addition, the failure to pay these pension obligations when due may result in the creation of liens in favor of the pension plan or the Pension Benefit Guaranty Corporation (the "PBGC") against the assets of each member of the controlled group.

As a result of the more than 80% ownership interest in us by Mr. Icahn’s affiliates, we and our subsidiaries are subject to the pension liabilities of entities in which Mr. Icahn has a direct or indirect ownership interest of at least 80%, which includes the liabilities of pension plans sponsored by ACF. All the minimum funding requirements of the Internal Revenue Code, as amended, and the Employee Retirement Income Security Act of 1974, as amended, for the ACF plans have been met as of December 31, 2018. If the plans were voluntarily terminated, they would be underfunded by approximately $80 million as of December 31, 2018. These results are based on the most recent information provided by the plans’ actuary. These liabilities could increase or decrease, depending on a number of factors, including future changes in benefits, investment returns, and the

assumptions used to calculate the liability. As members of the controlled group, we would be liable for any failure of ACF to make ongoing pension contributions or to pay the unfunded liabilities upon a termination of the ACF pension plans. In addition, other entities now or in the future within the controlled group in which we are included may have pension plan obligations that are, or may become, underfunded and we would be liable for any failure of such entities to make ongoing pension contributions or to pay the unfunded liabilities upon termination of such plans.

The current underfunded status of the ACF pension plans requires them to notify the PBGC of certain “reportable events,” such as if we cease to be a member of the ACF controlled group, or if we make certain extraordinary dividends or stock redemptions. The obligation to report could cause us to seek to delay or reconsider the occurrence of such reportable events.

Starfire Holding Corporation ("Starfire"), which is 99.6% owned by Mr. Icahn, has undertaken to indemnify us and our subsidiaries from losses resulting from any imposition of certain pension funding or termination liabilities that may be imposed on us and our subsidiaries or our assets as a result of being a member of the Icahn controlled group, including ACF. The Starfire indemnity provides, among other things, that so long as such contingent liabilities exist and could be imposed on us, Starfire will not make any distributions to its stockholders that would reduce its net worth to below $250 million. Nonetheless, Starfire may not be able to fund its indemnification obligations to us.

Other

The U.S. Attorney’s office for the Southern District of New York contacted Icahn Enterprises L.P. in September 2017 seeking production of information pertaining to our and Mr. Icahn’s activities relating to the Renewable Fuels Standard and Mr. Icahn’s former role as an advisor to the President. We are cooperating with the request and provided information in response to the subpoena. The U.S. Attorney’s office has not made any claims or allegations against us or Mr. Icahn. We maintain a strong compliance program and, while no assurances can be made, we do not believe this inquiry will have a material impact on our business, financial condition, results of operations or cash flows.

Unconditional Purchase Obligations

Unconditional purchase obligations are primarily within our Energy segment relating to commitments for petroleum products storage and transportation, electricity supply agreements, product supply agreements, commitments related to CVR Energy's biofuel blending obligation and various agreements for gas and gas transportation. The minimum required payments for our Energy segment's unconditional purchase obligations are as follows:



Year	Amount
	(in millions)
2019	$	129
2020	89
2021	78
2022	76
2023	75
Thereafter	444
	$	891

CVR Energy is a party to various supply agreements which commit it to purchase minimum volumes of crude oil, hydrogen, oxygen, nitrogen, petroleum coke and natural gas to run its facilities’ operations. For the years ended December 31, 2018, 2017 and 2016. amounts purchased under these supply agreements totaled approximately $214 million, $209 million and $151 million, respectively.

Consolidated Leases

Consolidated future minimum lease payments under operating leases with initial terms of one or more years consist of the following at December 31, 2018:



Year	Amount
	(in millions)
2019	$	196
2020	175
2021	152
2022	134
2023	85
Thereafter	235
	$	977

Rent expense under operating leases for the years ended December 31, 2018, 2017 and 2016 was $168 million, $155 million and $136 million, respectively.

Pensions and Other Post-Retirement Benefit Plans (Notes)

12 Months Ended

Dec. 31, 2018

Pension, Other Post-Retirement Benefits and Employee Benefit Plans. [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

Pension and Other Post-Retirement Benefit Plans.

Pension and other post-retirement benefit plan costs and obligations are primarily within our Food Packaging segment. Pension plans and other post-retirement benefit plans for other segments are not material and are not included in our disclosures below.

Viskase sponsors several defined benefit pension plans, including defined contribution plans, varying by country and subsidiary. Additionally, Viskase sponsors health care and life insurance benefits for certain employees and retirees around the world. The pension benefits are funded based on the funding requirements of federal and international laws and regulations, as applicable, in advance of benefit payments and the other benefits are funded as benefits are provided to participating employees.

Components of net periodic benefit cost (credit) are as follows:



	U.S. and Non-U.S. Pension Benefits
	Year Ended December 31,
	2018			2017			2016
	(in millions)
Service cost	$	1		$	1		$	1
Interest cost	6			7			7
Expected return on plan assets	(6		)	(8		)	(8		)
Amortization of actuarial losses	1			5			4
Settlement loss recognized	7			—			—
	$	9		$	5		$	4

The following table provides disclosures for Viskase's benefit obligations, plan assets, funded status, and recognition in the consolidated balance sheets. As pension costs for Viskase are not material to our consolidated financial position and results of operations, we do not provide information regarding their inputs and valuation assumptions.



	U.S and Non-U.S. Pension Benefits
	2018			2017
	(in millions)
Change in benefit obligation:
Benefit obligation, beginning of year	$	187		$	164
Service cost	1			1
Interest cost	6			7
Benefits paid	(8		)	(10		)
Actuarial (gain) loss	(11		)	9
Plan settlements	(28		)	—
Increase due to acquisitions	—			15
Currency translation	(1		)	1
Benefit obligation, end of year	146			187
Change in plan assets:
Fair value of plan assets, beginning of year	115			110
Actual return on plan assets	(6		)	15
Employer contributions	3			—
Plan settlements	(28		)	—
Benefits paid	(7		)	(10		)
Fair value of plan assets, end of year	77			115
Funded status of the plan and amounts recognized in the consolidated balance sheets	$	(69	)	$	(72	)
Amounts recognized in accumulated other comprehensive loss, inclusive of tax impacts	$	(45	)	$	(50	)

Defined Benefit Plans Measured at Fair Value on a Recurring Basis

The following table presents Viskase's defined benefit plan assets measured at fair value on a recurring basis:



	December 31, 2018						December 31, 2017
	Level 1		Level 2		Total		Level 1		Level 2		Total
	(in millions)
U.S. and Non-U.S. Plans:
Cash and cash equivalents	$	3	$	—	$	3	$	4	$	—	$	4
Government debt securities	1		2		3		1		3		4
Exchange traded funds	16		—		16		26		—		26
Mutual funds	22		2		24		36		3		39
Common stock	21		—		21		33		—		33
	$	63	$	4	$	67	$	100	$	6	$	106
Investments measured at net asset value					10						9
Plan assets measured at fair value					$	77					$	115

Supplemental Cash Flow Information (Notes)

12 Months Ended

Dec. 31, 2018

Supplemental Cash Flow Information [Abstract]

Supplemental Cash Flow

Supplemental Cash Flow Information.

Supplemental cash flow information consists of the following:



	Year Ended December 31,
	2018		2017		2016
	(in millions)
Continuing Operations:
Cash payments for interest, net of amounts capitalized	$	484	$	499	$	489
Net cash (receipts) payments for income taxes, net of refunds	20		39		10
Capital expenditures included in accounts payable, accrued expenses and other liabilities	17		8		18
Equity investment consideration received from sale of business	1,241		—		—
Acquisition of subsidiary common stock included in accrued expenses and other liabilities	—		51		—
Seller financing secured mortgages resulting from disposition of assets	—		375		—
Investments in subsidiaries prior to acquiring a controlling interest	—		—		286
Discontinued Operations:
Capital expenditures included in accounts payable, accrued expenses and other liabilities	48		72		71

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events. Icahn Enterprises Distribution On February 26, 2019, the Board of Directors of the general partner of Icahn Enterprises declared a quarterly distribution in the amount of $2.00 per depositary unit, which will be paid on or about April 17, 2019 to depositary unitholders of record at the close of business on March 11, 2019. Depositary unitholders will have until April 8, 2019 to make an election to receive either cash or additional depositary units; if a holder does not make an election, it will automatically be deemed to have elected to receive the dividend in cash. Depositary unitholders who elect to receive additional depositary units will receive units valued at the volume weighted average trading price of the units on NASDAQ during the 5 consecutive trading days ending April 15, 2019. No fractional depositary units will be issued pursuant to the distribution payment. Icahn Enterprises will make a cash payment in lieu of issuing fractional depositary units to any holders electing to receive depositary units. Any holders that would only be eligible to receive a fraction of a depositary unit based on the above calculation will receive a cash payment.

Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Data (Unaudited) [Abstract]

Quarterly Financial Information

Quarterly Financial Data (Unaudited).

Unaudited quarterly financial data for Icahn Enterprises is presented below:



	For the Three Months Ended
	March 31,					June 30,				September 30,					December 31,
	2018		2017			2018		2017		2018			2017		2018			2017
	(in millions, except per unit data)
Net sales	$	2,363	$	2,310		$	2,820	$	2,277	$	2,815		$	2,334	$	2,578		$	2,385
Gross margin on net sales	390		326			406		259		457			328		376			135
Total revenues	2,983		2,378			3,423		4,353		2,569			3,406		2,802			2,482
Income (loss) from continuing operations	378		(208		)	421		1,637		(323		)	790		(194		)	138
Income from discontinued operations	45		48			167		88		176			39		1,376			59
Net income (loss)	423		(160		)	588		1,725		(147		)	829		1,182			197
Net loss (income) attributable to non-controlling interests	286		(142		)	279		172		(273		)	232		247			(101		)
Net income (loss) attributable to Icahn Enterprises	$	137	$	(18	)	$	309	$	1,553	$	126		$	597	$	935		$	298

Basic income (loss) per LP unit:
Continuing operations	$	0.58	$	(0.34	)	$	0.86	$	9.04	$	(0.20	)	$	3.37	$	(2.28	)	$	1.61
Discontinued operations	0.19		0.22			0.84		0.47		0.88			0.16		10.31			0.11
	$	0.77	$	(0.12	)	$	1.70	$	9.51	$	0.68		$	3.53	$	8.03		$	1.72
Diluted income (loss) per LP unit:
Continuing operations	$	0.58	$	(0.34	)	$	0.86	$	9.04	$	(0.20	)	$	3.37	$	(2.28	)	$	1.61
Discontinued operations	0.19		0.22			0.84		0.47		0.88			0.16		10.31			0.11
	$	0.77	$	(0.12	)	$	1.70	$	9.51	$	0.68		$	3.53	$	8.03		$	1.72

The comparability of our unaudited quarterly financial data is affected by, among other things, (i) the performance of the Investment Funds, (ii) the results of our Energy segment's operations, impacted by the relationship of its refined product prices and prices for crude oil and other feedstocks, (iii) impairment charges, primarily in our Automotive segment in the fourth quarter of 2018, (iv) gains on dispositions of assets, primarily in our Railcar and Real Estate segments in the second and third quarters of 2017, respectively, and (v) the enactment of tax legislation in the United States in 2017. In addition, in connection with our sales of Federal-Mogul, Tropicana and ARI, we recorded aggregate pre-tax gains on the sales of discontinued operations of approximately $1.4 billion in the fourth quarter of 2018.

Our unaudited quarterly financial data presented above differs from the results of operations reported in each of our quarterly reports on Form 10-Q filed with the SEC during 2018 due to the recasting of the results of Federal-Mogul and Tropicana to discontinued operations for all periods presented beginning in the second quarter of 2018 and the recasting of the results of ARI to discontinued operations for all periods presented beginning in the fourth quarter of 2018. Certain other reclassifications were made that did not significantly impact our historical reported results.

Schedule I

12 Months Ended

Dec. 31, 2018

Icahn Enterprises (Parent)

Condensed Financial Statements, Captions [Line Items]

Condensed Financial Information of Parent Company Only Disclosure [Text Block]

SCHEDULE I

ICAHN ENTERPRISES, L.P.

(Parent Company)

CONDENSED BALANCE SHEETS



	December 31,
	2018			2017
	(In millions, except unit amounts)
ASSETS
Investments in subsidiaries, net	$	12,158		$	10,737
Total Assets	$	12,158		$	10,737

LIABILITIES AND EQUITY
Accrued expenses and other liabilities	$	124		$	124
Debt	5,505			5,507
	5,629			5,631

Commitments and contingencies (Note 3)

Equity:
Limited partners: Depositary units: 191,366,097 and 173,564,307 units issued and outstanding at December 31, 2018 and 2017, respectively	7,319			5,341
General partner	(790		)	(235		)
Total equity	6,529			5,106
Total Liabilities and Equity	$	12,158		$	10,737

See notes to condensed financial statements.

SCHEDULE I

ICAHN ENTERPRISES, L.P.

(Parent Company)

CONDENSED STATEMENTS OF OPERATIONS



	Year Ended December 31,
	2018			2017			2016
	(In millions)
Interest expense	$	(337	)	$	(323	)	$	(289	)
Loss on extinguishment of debt	—			(12		)	—
Equity in earnings (loss) of subsidiaries	1,844			2,765			(839		)
Net income (loss)	$	1,507		$	2,430		$	(1,128	)
Net income (loss) allocated to:
Limited partners	$	2,063		$	2,382		$	(1,106	)
General partner	(556		)	48			(22		)
	$	1,507		$	2,430		$	(1,128	)

See notes to condensed financial statements.

SCHEDULE I

ICAHN ENTERPRISES, L.P.

(Parent Company)

CONDENSED STATEMENTS OF CASH FLOWS



	Year Ended December 31,
	2018			2017			2016
	(In millions)
Cash flows from operating activities:
Net income (loss)	$	1,507		$	2,430		$	(1,128	)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Amortization of deferred financing costs	1			1			1
Loss on extinguishment of debt	—			2			—
Equity in (income) loss of subsidiary	(1,844		)	(2,765		)	839
Net cash used in operating activities	(336		)	(332		)	(288		)
Cash flows from investing activities:
Net investment in and advances from subsidiary	433			(204		)	390
Net cash provided by (used in) investing activities	433			(204		)	390
Cash flows from financing activities:
Partnership distributions	(97		)	(81		)	(103		)
Partnership contributions	—			606			1
Proceeds from borrowings	—			2,470			—
Repayments of borrowings	—			(2,450		)	—
Debt issuance costs	—			(9		)	—
Net cash (used in) provided by financing activities	(97		)	536			(102		)
Net change in cash and cash equivalents and restricted cash and restricted cash equivalents	—			—			—
Cash and cash equivalents and restricted cash and restricted cash equivalents, beginning of period	—			—			—
Cash and cash equivalents and restricted cash and restricted cash equivalents, end of period	$	—		$	—		$	—

See notes to condensed financial statements.

ICAHN ENTERPRISES L.P. (Parent Company)

NOTES TO CONDENSED FINANCIAL STATEMENTS

1. Description of Business and Basis of Presentation.

Icahn Enterprises, L.P. (“Icahn Enterprises”) is a master limited partnership formed in Delaware on February 17, 1987. We own a 99% limited partner interest in Icahn Enterprises Holdings L.P. (''Icahn Enterprises Holdings''). Icahn Enterprises Holdings and its subsidiaries own substantially all of our assets and liabilities and conduct substantially all of our operations. Icahn Enterprises G.P. Inc., our sole general partner, which is owned and controlled by Carl C. Icahn, owns a 1% general partner interest in both us and Icahn Enterprises Holdings, representing an aggregate 1.99% general partner interest in us and Icahn Enterprises Holdings. As of December 31, 2018, Icahn Enterprises is engaged in the following continuing operating businesses: Investment, Energy, Automotive, Food Packaging, Metals, Real Estate, Home Fashion and Mining.

For the years ended December 31, 2018, 2017 and 2016, Icahn Enterprises received (paid) $433 million, $(204) million and $390 million, respectively, for (investments in) dividends and distributions from consolidated subsidiaries.

The condensed financial statements of Icahn Enterprises should be read in conjunction with the consolidated financial statements and notes thereto included in Item 8 of this Report.

2. Debt.

See Note 10, “Debt,” to the consolidated financial statements located in Item 8 of this Report. Icahn Enterprises' Parent company debt consists of the following:



	December 31,
	2018		2017
	(in millions)
6.000% senior unsecured notes due 2020	$	1,702	$	1,703
5.875% senior unsecured notes due 2022	1,344		1,342
6.250% senior unsecured notes due 2022	1,213		1,216
6.750% senior unsecured notes due 2024	498		498
6.375% senior unsecured notes due 2025	748		748
Total debt	$	5,505	$	5,507

3. Commitments and Contingencies.

See Note 17, “Commitments and Contingencies,” to the consolidated financial statements.

Icahn Enterprises Holdings (Parent)

Condensed Financial Statements, Captions [Line Items]

Condensed Financial Information of Parent Company Only Disclosure [Text Block]

SCHEDULE I

ICAHN ENTERPRISES HOLDINGS L.P.

(Parent Company)

CONDENSED BALANCE SHEETS



	December 31,
	2018			2017
	(in millions)
ASSETS
Cash and cash equivalents	$	30		$	241
Restricted cash	29			—
Investments	723			1
Other assets	60			84
Investments in subsidiaries, net	11,355			10,467
Total Assets	$	12,197		$	10,793
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	$	131		$	128
Debt	5,509			5,532
	5,640			5,660

Commitments and contingencies (Note 3)

Equity:
Limited partner	7,421			5,420
General partner	(864		)	(287		)
Total equity	6,557			5,133
Total Liabilities and Equity	$	12,197		$	10,793

See notes to condensed financial statements.

SCHEDULE I

ICAHN ENTERPRISES HOLDINGS L.P.

(Parent Company)

CONDENSED STATEMENTS OF OPERATIONS



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Interest and dividend income	$	7		$	2		$	1
Net (loss) gain from investment activities	(389		)	—			1
Gain (loss) on disposition of assets	23			(1		)	—
Equity in earnings (loss) of subsidiaries	2,225			2,739			(818		)
Other income, net	4			41			7
	1,870			2,781			(809		)
Interest expense	337			324			290
Selling, general and administrative	25			25			28
	362			349			318
Net income (loss)	$	1,508		$	2,432		$	(1,127	)
Net income (loss) allocated to:
Limited partner	$	2,085		$	2,408		$	(1,116	)
General partner	(577		)	24			(11		)
	$	1,508		$	2,432		$	(1,127	)

See notes to condensed financial statements.

SCHEDULE I

ICAHN ENTERPRISES HOLDINGS L.P.

(Parent Company)

CONDENSED STATEMENTS OF CASH FLOWS



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Cash flows from operating activities:
Net income (loss)	$	1,508		$	2,432		$	(1,127	)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Equity in (income) loss of subsidiary	(2,225		)	(2,739		)	818
(Gain) loss on disposition of assets	(23		)	1			—
Investment gains	389			—			(1		)
Depreciation and amortization	2			3			3
Other, net	(2		)	(39		)	8
Change in operating assets and liabilities	8			18			(6		)
Net cash used in operating activities	(343		)	(324		)	(305		)
Cash flows from investing activities:
Net investment in subsidiaries	238			509			421
Other, net	41			53			—
Net cash provided by investing activities	279			562			421
Cash flows from financing activities:
Partnership distributions	(97		)	(81		)	(103		)
Partner contributions	—			6			1
Proceeds from borrowings	—			2,470			—
Repayments of borrowings	(21		)	(2,450		)	—
Debt issuance costs	—			(7		)	—
Net cash used in financing activities	(118		)	(62		)	(102		)
Net change in cash and cash equivalents and restricted cash and restricted cash equivalents	(182		)	176			14
Cash and cash equivalents and restricted cash and restricted cash equivalents, beginning of period	241			65			51
Cash and cash equivalents and restricted cash and restricted cash equivalents, end of period	$	59		$	241		$	65

See notes to condensed financial statements.

ICAHN ENTERPRISES HOLDINGS L.P. (Parent Company)

NOTES TO CONDENSED FINANCIAL STATEMENTS

1. Description of Business and Basis of Presentation.

Icahn Enterprises Holdings L.P. (“Icahn Enterprises Holdings”) is a limited partnership formed in Delaware on February 17, 1987. Our sole limited partner is Icahn Enterprises L.P., a master limited partnership which owns a 99% interest in us. Icahn Enterprises G.P. Inc., our sole 1% general partner, is a Delaware corporation which is owned and controlled by Carl C. Icahn. As of December 31, 2018, Icahn Enterprises Holdings is engaged in the following continuing operating businesses: Investment, Energy, Automotive, Food Packaging, Metals, Real Estate, Home Fashion and Mining.

For the years ended December 31, 2018, 2017 and 2016, Icahn Enterprises Holdings received $238 million, $509 million and $421 million, respectively, in dividends and distributions from consolidated subsidiaries.

The condensed financial statements of Icahn Enterprises Holdings should be read in conjunction with the consolidated financial statements and notes thereto included in Item 8 of this Report.

2. Debt.

See Note 10, “Debt,” to the consolidated financial statements located in Item 8 of this Report. Icahn Enterprises Holdings' Parent company debt consists of the following:



	December 31,
	2018		2017
	(in millions)
6.000% senior unsecured notes due 2020	$	1,703	$	1,704
5.875% senior unsecured notes due 2022	1,344		1,343
6.250% senior unsecured notes due 2022	1,214		1,217
6.750% senior unsecured notes due 2024	499		499
6.375% senior unsecured notes due 2025	749		749
Mortgages payable	—		20
Total debt	$	5,509	$	5,532

3. Commitments and Contingencies.

See Note 17, “Commitments and Contingencies,” to the consolidated financial statements.

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Consolidation, Policy [Policy Text Block]	Principles of ConsolidationAs of December 31, 2018, our consolidated financial statements include the accounts of (i) Icahn Enterprises and Icahn Enterprises Holdings and (ii) the wholly and majority owned subsidiaries of Icahn Enterprises and Icahn Enterprises Holdings, in addition to variable interest entities ("VIEs") in which we are the primary beneficiary. In evaluating whether we have a controlling financial interest in entities that we consolidate, we consider the following: (1) for voting interest entities, including limited partnerships and similar entities that are not VIEs, we consolidate these entities in which we own a majority of the voting interests; and (2) for VIEs, we consolidate these entities in which we are the primary beneficiary. See below for a discussion of our VIEs. Kick-out rights, which are the rights underlying the limited partners' ability to dissolve the limited partnership or otherwise remove the general partners, held through voting interests of partnerships and similar entities that are not VIEs are considered the equivalent of the equity interests of corporations that are not VIEs.
Held for sale policy [Policy Text Block]	Discontinued Operations and Held For Sale We classify assets and liabilities as held for sale when management, having the authority to approve the action, commits to a plan to sell the disposal group, the sale is probable within one year, and the disposal group is available for immediate sale in its present condition. We also consider whether an active program to locate a buyer has been initiated, whether the disposal group is marketed actively for sale at a price that is reasonable in relation to its current fair value, and whether actions required to complete the plan indicate it is unlikely significant changes to the plan will be made or the plan will be withdrawn. In accordance with U.S. GAAP, we classify operations as discontinued when they meet all the criteria to be classified as held for sale and when the sale represents a strategic shift that will have a major impact on our financial condition and results of operations.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates in Preparation of Financial StatementsThe preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the period. Due to the inherent uncertainty involved in making estimates, actual results may differ from the estimates and assumptions used in preparing the consolidated financial statements.
Reclassification, Policy [Policy Text Block]	Reclassifications In connection with our adoption of Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") No. 2016-18, Restricted Cash, as discussed below, our net cash provided by operating activities for the years ended December 31, 2017 and 2016 was decreased by $19 million and $446 million, respectively. In connection with our adoption of FASB ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, as discussed below, we decreased our selling, general and administrative costs by $4 million and $4 million and decreased other income, net by $4 million and $4 million for the years ended December 31, 2017 and 2016, respectively. Certain reclassifications have been made within the consolidated statements of operations to include gain (loss) on derivatives within cost of goods sold for our Energy segment. Prior year balances have been reclassified to conform to the current year presentation. The reclassifications of losses on derivatives from other income, net to costs of goods sold were $70 million and $19 million for the years ended December 31, 2017 and 2016, respectively. These reclassifications did not have an impact on previously reported net income. We have recasted certain historical results for discontinued operations, which we disclose in Note 13, "Discontinued Operations." In addition, certain other reclassifications from the prior year presentation have been made to conform to the current year presentation, which did not have an impact on previously reported net income and equity and are not deemed material.
Consolidation, Variable Interest Entity, Policy [Policy Text Block]	Consolidated Variable Interest Entities The following is a discussion of variable interest entities in which we are deemed to be the primary beneficiary and in which we therefore consolidate. In addition, as discussed in Note 3, "Related Party Transactions," we have a variable interest in an entity in which we are not the primary beneficiary and therefore we do not consolidate. Icahn Enterprises Holdings We determined that Icahn Enterprises Holdings is a VIE because it lacks both substantive kick-out and participating rights. Icahn Enterprises is the primary beneficiary of Icahn Enterprises Holdings principally based on its 99% limited partner interest in Icahn Enterprises Holdings and therefore continues to consolidate Icahn Enterprises Holdings. The consolidated financial statements of Icahn Enterprises Holdings are included in this Report. The balances with respect to Icahn Enterprises Holdings' consolidated VIEs are discussed below, comprising the Investment Funds, CVR Refining, CVR Partners and Viskase. Investment We determined that each of the Investment Funds are considered VIEs because these limited partnerships lack both substantive kick-out and participating rights. Because we have a general partner interest in each of the Investment Funds and have significant limited partner interests in each of the Investment Funds, coupled with our significant exposure to losses and benefits in each of the Investment Funds, we are the primary beneficiary of each of the Investment Funds and therefore continue to consolidate each of the Investment Funds. Energy CVR Refining and CVR Partners are each considered VIEs because each of these limited partnerships lack both substantive kick-out and participating rights. In addition, CVR Energy also concluded that, based upon its general partner's roles and rights in CVR Refining and CVR Partners as afforded by their respective partnership agreements, coupled with its exposure to losses and benefits in each of CVR Refining and CVR Partners through its significant limited partner interests, intercompany credit facilities and services agreements, it is the primary beneficiary of both CVR Refining and CVR Partners. Based upon this evaluation, CVR Energy continues to consolidate both CVR Refining and CVR Partners. Food Packaging Viskase holds a variable interest in a joint venture for which Viskase is the primary beneficiary. Viskase's interest in the joint venture includes a 50% equity interest and also relates to the sales, operations, administrative and financial support to the joint venture through providing many of the assets used in its business.
Business Combinations Policy [Policy Text Block]	Acquisitions of Businesses We account for business combinations under the acquisition method of accounting (other than acquisitions of businesses under common control), which requires us to recognize separately from goodwill the assets acquired and the liabilities assumed at their acquisition date fair values. While we use our best estimates and assumptions to accurately value assets acquired and liabilities assumed at the acquisition date as well as contingent consideration, where applicable, our estimates are inherently uncertain and subject to refinement. Accounting for business combinations requires us to make significant estimates and assumptions, especially at the acquisition date including our estimates for intangible assets, contractual obligations assumed, pre-acquisition contingencies, and contingent consideration, where applicable. In valuing our acquisitions, we estimate fair values based on industry data and trends and by reference to relevant market rates and transactions, and discounted cash flow valuation methods, among other factors. The discount rates used were commensurate with the inherent risks associated with each type of asset and the level and timing of cash flows appropriately reflect market participant assumptions. The primary items that generate goodwill include the value of the synergies between the acquired company and our existing businesses and the value of the acquired assembled workforce, neither of which qualifies for recognition as an intangible asset.
Common control acquisitions and dispositions [Policy Text Block]	Acquisition, Investments and Disposition of Entities under Common ControlAcquisitions or investments of entities under common control are reflected in a manner similar to pooling of interests. The general partner's capital account or non-controlling interests, as applicable, are charged or credited for the difference between the consideration we pay for the entity and the related entity's basis prior to our acquisition or investment. Net gains or losses of an acquired entity prior to its acquisition or investment date are allocated to the general partner's capital account or non-controlling interests, as applicable. In allocating gains and losses upon the sale of a previously acquired common control entity, we allocate a gain or loss for financial reporting purposes by first restoring the general partner's capital account or non-controlling interests, as applicable, for the cumulative charges or credits relating to prior periods recorded at the time of our acquisition or investment and then allocating the remaining gain or loss ("Common Control Gains or Losses") among our general partner, limited partners and non-controlling interests, as applicable, in accordance with their respective ownership percentages. In the case of acquisitions of entities under common control, such Common Control Gains or Losses are allocated in accordance with their respective partnership percentages under the Amended and Restated Agreement of Limited Partnership dated as of May 12, 1987, as amended from time to time (together with the partnership agreement of Icahn Enterprises Holdings, the “Partnership Agreement”) (i.e., 98.01% to the limited partners and 1.99% to the general partner).
Statement of cash flow, policy [Policy Text Block]	Cash FlowCash and cash equivalents and restricted cash and restricted cash equivalents in our consolidated statements of cash flows is comprised of (i) cash and cash equivalents and (ii) cash held at consolidated affiliated partnerships and restricted cash.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash EquivalentsWe consider short-term investments, which are highly liquid with original maturities of three months or less at date of purchase, to be cash equivalents.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Held at Consolidated Affiliated Partnerships and Restricted Cash Our cash held at consolidated affiliated partnerships balance was $2,648 million and $192 million as of December 31, 2018 and December 31, 2017, respectively. Cash held at consolidated affiliated partnerships relates to our Investment segment and consists of cash and cash equivalents held by the Investment Funds that, although not legally restricted, is not available to fund the general liquidity needs of the Investment segment or Icahn Enterprises. Our restricted cash balance was $34 million and $555 million as of December 31, 2018 and December 31, 2017, respectively. Restricted cash includes, but is not limited to, our Investment segment's cash pledged and held for margin requirements on derivative transactions.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value Option for Financial Assets and Financial LiabilitiesThe fair value option gives entities the option to measure eligible financial assets, financial liabilities and firm commitments at fair value (i.e., the fair value option), on an instrument-by-instrument basis, that are otherwise not permitted to be accounted for at fair value pursuant to the provisions of FASB Accounting Standards Codification ("ASC") Topic 825, Financial Instruments. The election to use the fair value option is available when an entity first recognizes a financial asset or financial liability or upon entering into a firm commitment. Subsequent changes in fair value must be recorded in earnings. In estimating the fair value for financial instruments for which the fair value option has been elected, we use the valuation methodologies in accordance to where the financial instruments are classified within the fair value hierarchy as discussed in Note 5, “Fair Value Measurements.” For our Investment segment, we apply the fair value option to our investments that would otherwise be accounted under the equity method.
Derivatives, Policy [Policy Text Block]	DerivativesFrom time to time, our subsidiaries enter into derivative contracts, including purchased and written option contracts, swap contracts, futures contracts and forward contracts. U.S. GAAP requires recognition of all derivatives as either assets or liabilities in the balance sheet at their fair value. The accounting for changes in fair value depends on the intended use of the derivative and its resulting designation. For those derivative instruments that are designated and qualify as hedging instruments, a company must designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge or a hedge of a net investment in a foreign operation. Gains and losses related to a hedge are either recognized in income immediately to offset the gain or loss on the hedged item or are deferred and reported as a component of accumulated other comprehensive loss and subsequently recognized in earnings when the hedged item affects earnings. The change in fair value of the ineffective portion of a financial instrument, determined using the hypothetical derivative method, is recognized in earnings immediately. The gain or loss related to financial instruments that are not designated as hedges are recognized immediately in earnings. Cash flows related to hedging activities are included in the operating section of the consolidated statements of cash flows. For further information regarding our derivative contracts, see Note 6, “Financial Instruments
Trade and Other Accounts Receivable, Policy [Policy Text Block]	Accounts Receivable, NetAccounts receivable, net consists of trade receivables from customers, including contract assets when we have an unconditional right to receive consideration. An allowance for doubtful accounts is determined through analysis of the aging of accounts receivable at the date of the consolidated financial statements, assessments of collectability based on an evaluation of historic and anticipated trends, the financial condition of our customers, and an evaluation of the impact of economic conditions. Our allowance for doubtful accounts is an estimate based on specifically identified accounts as well as general reserves based on historical experience.
Property, Plant and Equipment, Policy [Policy Text Block]	Long-Lived Assets Long-lived assets such as property, plant, and equipment, and definite-lived intangible assets are recorded at cost or fair value established at acquisition, less accumulated depreciation or amortization, unless the expected future use of the assets indicate a lower value is appropriate. Long-lived asset groups are evaluated for impairment when impairment indicators exist. If the carrying value of a long-lived asset group is impaired, an impairment charge is recorded for the amount by which the carrying value of the long-lived asset group exceeds its fair value. Depreciation and amortization are computed principally by the straight-line method for financial reporting purposes. Land and construction in progress are stated at the lower of cost or net realizable value. Interest is capitalized on expenditures for long-term projects until a salable or ready-for-use condition is reached. The interest capitalization rate is based on the interest rate on specific borrowings to fund the projects.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Indefinite-Lived Intangible AssetsGoodwill and indefinite-lived intangible assets primarily include trademarks and brand names acquired in acquisitions. For a complete discussion of the impairment of goodwill and indefinite-lived intangible assets related to our various segments, see Note 8, “Goodwill and Intangible Assets, Net.”
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Goodwill Goodwill is determined as the excess of fair value over amounts attributable to specific tangible and intangible assets. Goodwill is reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a reporting unit’s carrying value exceeds its fair value. When performing the goodwill impairment testing, a reporting units’ fair value is based on valuation techniques using the best available information, primarily discounted cash flows projections, guideline transaction multiples, and multiples of current and future earnings. The impairment charge, if any, is the excess of the tested reporting unit's carrying value over its fair value, limited to the total amount of goodwill allocated to the tested reporting unit. Indefinite-Lived Intangible Assets Indefinite-lived intangible assets are stated at fair value established at acquisition or cost. These indefinite-lived intangible assets are reviewed for impairment annually, or more frequently if impairment indicators exist. An impairment exists when a trademark or brand names' carrying value exceeds its fair value. The fair values of these assets are based upon the prospective stream of hypothetical after-tax royalty cost savings discounted at rates that reflect the rates of return appropriate for these intangible assets. The impairment charge, if any, is the excess of the assets carrying value over its fair value.
Pension and Other Postretirement Plans, Policy [Policy Text Block]	Pension and Other Post-Retirement Benefit Plan Obligations Post-retirement benefit liabilities were $77 million and $80 million as of December 31, 2018 and 2017, respectively, and are included in accrued expenses and other liabilities in our consolidated balance sheets. Appropriate actuarial methods and assumptions are used in accounting for defined benefit pension plans and other post-retirement benefit plans. These assumptions include long-term rate of return on plan assets, discount rates and other factors. Actual results that differ from the assumptions used are accumulated and amortized over future periods. Therefore, assumptions used to calculate benefit obligations as of the end of the year directly impact the expense to be recognized in future periods. The measurement date for all defined benefit plans is December 31 of each year.
General partnership policy [Policy Text Block]	General Partnership Interest of Icahn Enterprises and Icahn Enterprises Holdings The general partner's capital account generally consists of its cumulative share of our net income less cash distributions plus capital contributions. Additionally, in acquisitions of common control companies accounted for at historical cost similar to a pooling of interests, the general partner's capital account would be charged (or credited) in a manner similar to a distribution (or contribution) for the excess (or deficit) of the fair value of consideration paid over historical basis in the business acquired. Capital Accounts, as defined under the Partnership Agreement, are maintained for our general partner and our limited partners. The capital account provisions of our Partnership Agreement incorporate principles established for U.S. federal income tax purposes and are not comparable to the equity accounts reflected under U.S. GAAP in our consolidated financial statements. Under our Partnership Agreement, the general partner is required to make additional capital contributions to us upon the issuance of any additional depositary units in order to maintain a capital account balance equal to 1.99% (1% in the case of Icahn Enterprises Holdings) of the total capital accounts of all partners. Generally, net earnings for U.S. federal income tax purposes are allocated 1.99% (1% in the case of Icahn Enterprises Holdings) and 98.01% (99% in the case of Icahn Enterprises Holdings) between the general partner and the limited partners, respectively, in the same proportion as aggregate cash distributions made to the general partner and the limited partners during the period. This is generally consistent with the manner of allocating net income under our Partnership Agreement; however, it is not comparable to the allocation of net income reflected in our consolidated financial statements. Pursuant to the Partnership Agreement, in the event of our dissolution, after satisfying our liabilities, our remaining assets would be divided among our limited partners and the general partner in accordance with their respective percentage interests under the Partnership Agreement. If a deficit balance still remains in the general partner's capital account after all allocations are made between the partners, the general partner would not be required to make whole any such deficit.
Earnings Per Share, Policy [Policy Text Block]	Basic and Diluted Income Per LP Unit For Icahn Enterprises, basic income (loss) per LP unit is based on net income or loss attributable to Icahn Enterprises allocated to limited partners. Net income or loss allocated to limited partners is divided by the weighted-average number of LP units outstanding. Diluted income (loss) per LP unit, when applicable, is based on basic income (loss) adjusted for the potential effect of dilutive securities as well as the related weighted-average number of units and equivalent units outstanding. For accounting purposes, when applicable, earnings prior to dates of acquisitions of entities under common control are excluded from the computation of basic and diluted income per LP unit as such earnings are allocated to our general partner.
Income Tax, Policy [Policy Text Block]	Income Taxes Except as described below, no provision has been made for federal, state, local or foreign income taxes on the results of operations generated by partnership activities, as such taxes are the responsibility of the partners. Provision has been made for federal, state, local or foreign income taxes on the results of operations generated by our corporate subsidiaries and these are reflected within continuing and discontinued operations. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are limited to amounts considered to be realizable in future periods. A valuation allowance is recorded against deferred tax assets if management does not believe that we have met the “more-likely-than-not” standard to allow recognition of such an asset. U.S. GAAP provides that the tax effects from an uncertain tax position can be recognized in the financial statements only if the position is “more-likely-than-not” to be sustained if the position were to be challenged by a taxing authority. The assessment of the tax position is based solely on the technical merits of the position, without regard to the likelihood that the tax position may be challenged. If an uncertain tax position meets the “more-likely-than-not” threshold, the largest amount of tax benefit that is greater than 50 percent likely to be recognized upon ultimate settlement with the taxing authority is recorded. See Note 14, “Income Taxes,” for additional information.
Environmental Costs, Policy [Policy Text Block]	Environmental Liabilities We recognize environmental liabilities when a loss is probable and reasonably estimable. Estimates of these costs are based upon currently available facts, internal and third-party assessments of contamination, available remediation technology, site-specific costs, and currently enacted laws and regulations. In reporting environmental liabilities, no offset is made for potential recoveries. Loss contingency accruals, including those for environmental remediation, are subject to revision as further information develops or circumstances change, and such accruals can take into account the legal liability of other parties. Environmental expenditures are capitalized at the time of the expenditure when such costs provide future economic benefits.
Commitments and Contingencies, Policy [Policy Text Block]	LitigationOn an ongoing basis, we assess the potential liabilities related to any lawsuits or claims brought against us. While it is typically very difficult to determine the timing and ultimate outcome of such actions, we use our best judgment to determine if it is probable that we will incur an expense related to the settlement or final adjudication of such matters and whether a reasonable estimation of such probable loss, if any, can be made. In assessing probable losses, we make estimates of the amount of insurance recoveries, if any. We accrue a liability when we believe a loss is probable and the amount of loss can be reasonably estimated. Due to the inherent uncertainties related to the eventual outcome of litigation and potential insurance recovery, it is possible that certain matters may be resolved for amounts materially different from any provisions or disclosures that we have previously made.
New Accounting Pronouncements, Policy [Policy Text Block]	Adoption of New Accounting Standards Revenue Accounting Standards Updates In May 2014, the FASB issued ASU No. 2014-09, creating a new topic, FASB ASC Topic 606, Revenue from Contracts with Customers, superseding revenue recognition requirements in FASB ASC Topic 605, Revenue Recognition. This ASU requires that an entity recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In addition, an entity is required to disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU was amended by ASU No. 2015-14, issued in August 2015, which deferred the original effective date by one year; the effective date of this ASU is for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, using one of two retrospective application methods. In addition, the FASB issued other amendments during 2016 and 2017 to FASB ASC Topic 606 that include implementation guidance to principal versus agent considerations, guidance to identifying performance obligations and licensing guidance and other narrow scope improvements. We adopted these new standards on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The standard has been applied to all contracts at the date of initial application. No adjustment to revenue for periods prior to adoption were required. We have not identified any material differences in our revenue recognition methods that required modification under the new standards. Additionally, our internal control framework did not materially change as a result of the adoption of these new standards. The impact of adopting these new standards on our consolidated financial statements is a cumulative effect adjustment to decrease our equity attributable to Icahn Enterprises and Icahn Enterprises Holdings as of January 1, 2018 by $29 million, primarily relating to our Automotive segment. As of January 1, 2018, our Energy segment increased each of accounts receivable, net and accrued expenses and other liabilities by $21 million for customer prepayments prior to delivery and to gross up certain fees collected from customers to reflect a receivable and deferred revenue recorded at the point in time in which a prepaid contract is legally enforceable and the associated right to consideration is unconditional. Previously, deferred revenue was recorded by our Energy segment upon customer prepayment. As of January 1, 2018, our Automotive segment increased accrued expenses and other liabilities by $42 million and decreased deferred tax liabilities by $10 million for certain extended warranties to reflect the revenues from these plans as deferred revenue. Previously, revenues from these plans were recognized upfront. Our Automotive segment also recognizes revenue from the sale of goods on a drop ship basis. Previously, revenues from these transactions were recognized gross. For the year ended December 31, 2018, net sales and cost of goods sold would have been higher by $62 million and $62 million, respectively, under prior accounting principles. In addition to the above, we increased assets by an aggregate of $32 million and increased liabilities by $29 million as of January 1, 2018, primarily with respect to Federal-Mogul's asset and liabilities classified as held for sale. For the year ended December 31, 2018, the impact on revenues would have been immaterial under prior accounting principles. Other Accounting Standards Updates In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall, which amends FASB ASC Topic 825, Financial Instruments. This ASU requires that equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes recognized in earnings. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment. In addition, there were other amendments to certain disclosure and presentation matters pertaining to financial instruments, including the requirement of an entity to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. We adopted this new standard on January 1, 2018 using the modified retrospective application method which required a cumulative effect adjustment recognized in equity at such date. The amendments related to equity securities without readily determinable fair values were applied prospectively to equity investments that existed as of the date of adoption. The adoption of this standard did not have a material impact on our consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU seeks to reduce the diversity currently in practice by providing guidance on the presentation of eight specific cash flow issues in the statement of cash flows. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The adoption of this standard did not have a material impact on our consolidated statements of cash flows. In November 2016, the FASB issued ASU No. 2016-18, Restricted Cash, which amends FASB ASC Topic 230, Statement of Cash Flows. This ASU requires that the statement of cash flows explain the change during the period total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We have adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications." In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which amends FASB ASC Topic 715, Compensation - Retirement Benefits. This ASU requires entities to present the service cost component of net periodic benefit cost in the same line item or items in the financial statements as other compensation costs arising from services rendered by the pertinent employees during the period. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 using the retrospective application method. The impact of adopting this new standard is discussed above under "Reclassifications." In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting, which amends FASB ASC Topic 718, Compensation - Stock Compensation. This ASU provides updated guidance about which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We adopted this standard on January 1, 2018 which has been applied prospectively and which did not have a material impact on our consolidated financial statements.
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	Recently Issued Accounting Standards In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which supersedes FASB ASC Topic 840, Leases. This ASU requires the recognition of right-of-use assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. In addition, among other changes to the accounting for leases, this ASU retains the distinction between finance leases and operating leases. The classification criteria for distinguishing between finance leases and operating leases are substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the previous guidance. Furthermore, quantification and qualitative disclosures, including disclosures regarding significant judgments made by management, will be required. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The amendments in this ASU should be applied using a modified retrospective approach. Early application is permitted. In addition, in July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842), which provides an additional (and optional) transition method to adopt the new leases standard. We have developed an implementation plan to adopt the new leases standard using the new transition method option effective January 1, 2019, which will require adopting the new leases standard at the adoption date and recognizing a cumulative-effect adjustment to the opening balance of equity in the period of adoption instead of the earliest period presented. In addition, prior period presentation and disclosure will not be adjusted after adoption. The most significant impact will relate to the recognition of right-of-use assets and lease liabilities on our consolidated balance sheets for long-term operating leases with the significant majority of the impact within our Automotive segment. Our Automotive segment has identified approximately 2,300 leases, primarily for real estate, and estimates recognizing right-of-use assets of $639 million and related liabilities of $674 million as of January 1, 2019. Our Energy segment estimates recognizing right-of-use assets and liabilities of $53 million, in addition to the recognition of finance lease assets and obligations of $26 million, as of January 1, 2019. The aggregate impact of all other segments is not material. In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments, which amends FASB ASC Topic 326, Financial Instruments - Credit Losses. This ASU requires financial assets measured at amortized cost to be presented at the net amount to be collected and broadens the information, including forecasted information incorporating more timely information, that an entity must consider in developing its expected credit loss estimate for assets measured. This ASU is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early application is permitted for fiscal years beginning after December 15, 2018. We are currently evaluating the impact of this standard on our consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which amends FASB ASC Topic 815, Derivatives and Hedging. This ASU includes amendments to existing guidance to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which amends FASB ASC Topic 220, Income Statement - Reporting Comprehensive Income. This ASU allows a reclassification out of accumulated other comprehensive loss within equity for standard tax effects resulting from the Tax Cuts and Jobs Act and consequently, eliminates the stranded tax effects resulting from the Tax Cuts and Jobs Act. This ASU is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurements, which amends FASB ASC Topic 820, Fair Value Measurements. This ASU eliminates, modifies and adds various disclosure requirements on fair value measurements. This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Certain disclosures are required to be applied using a retrospective approach and others using a prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-15, Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract, which amends FASB ASC Subtopic 350-40, Intangibles-Goodwill and Other-Internal-Use Software. This ASU adds certain disclosure requirements related to implementation costs incurred for internal-use software and cloud computing arrangements. The amendment aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). This ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The amendments in this ASU should be applied either using a retrospective or prospective approach. Early adoption is permitted. We are currently evaluating the impact of this standard on our consolidated financial statements.
Investment Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Investment, Policy [Policy Text Block]	Investment Investment Transactions and Related Investment Income (Loss). Investment transactions of the Investment Funds are recorded on a trade date basis. Realized gains or losses on sales of investments are based on the first-in, first-out or the specific identification method. Realized and unrealized gains or losses on investments are recorded in the consolidated statements of operations. Interest income and expenses are recorded on an accrual basis and dividends are recorded on the ex-dividend date. Premiums and discounts on fixed income securities are amortized using the effective yield method. Investments held by the Investment segment are carried at fair value. Our Investment segment applies the fair value option to those investments that are otherwise subject to the equity method. Valuation of Investments. Securities of the Investment Funds that are listed on a securities exchange are valued at their last sales price on the primary securities exchange on which such securities are traded on such date. Securities that are not listed on any exchange but are traded over-the-counter are valued at the mean between the last “bid” and “ask” price for such security on such date. Securities and other instruments for which market quotes are not readily available are valued at fair value as determined in good faith by the Investment Funds.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Transactions. The books and records of the Investment Funds are maintained in U.S. dollars. Assets and liabilities denominated in currencies other than U.S. dollars are translated into U.S. dollars at the rate of exchange in effect at the balance sheet date. Transactions during the period denominated in currencies other than U.S. dollars are translated at the rate of exchange applicable on the date of the transaction. Foreign currency translation gains and losses are recorded in the consolidated statements of operations. The Investment Funds do not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in the market prices of securities. Such fluctuations are reflected in net gain (loss) from investment activities in the consolidated statements of operations.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Values of Financial Instruments. The fair values of the Investment Funds' assets and liabilities that qualify as financial instruments under applicable U.S. GAAP approximate the carrying amounts presented in the consolidated balance sheets.
Securities sold, not yet purchased [Policy Text Block]	Securities Sold, Not Yet Purchased. The Investment Funds may sell an investment they do not own in anticipation of a decline in the fair value of that investment. When the Investment Funds sell an investment short, they must borrow the investment sold short and deliver it to the broker-dealer through which they made the short sale. A gain, limited to the price at which the Investment Funds sold the investment short, or a loss, unlimited in amount, will be recognized upon the cover of the short sale.
Due to and from Broker [Policy Text Block]	Due From Brokers. Due from brokers represents cash balances with the Investment Funds' clearing brokers. These funds as well as fully-paid for and marginable securities are essentially restricted to the extent that they serve as collateral against securities sold, not yet purchased. Due from brokers may also include unrestricted balances with derivative counterparties. Due To Brokers. Due to brokers represents margin debit balances collateralized by certain of the Investment Funds' investments in securities.
Allocation of profits and losses in consolidated affiliated partnerships [Policy Text Block]	Allocation of Net Profits and Losses in Consolidated Affiliated Partnerships Net investment income and net realized and unrealized gains and losses on investments of the Investment Funds are allocated to the respective partners of the Investment Funds based on their percentage ownership in such Investment Funds on a monthly basis. Except for our limited partner interest, such allocations made to the limited partners of the Investment Funds are represented as non-controlling interests in our consolidated statements of operations.
Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	EnergyOur Energy segment inventories consist primarily of domestic and foreign crude oil, blending stock and components, work in progress, fertilizer products, and refined fuels and by-products. Inventories are valued at the lower of FIFO cost, or net realizable value for fertilizer products, refined fuels and by-products for all periods presented. Refinery unfinished and finished products inventory values were determined using the ability-to-bear process, whereby raw materials and production costs are allocated to work-in-process and finished goods based on their relative fair values. Other inventories, including other raw materials, spare parts and supplies, are valued at the lower of moving-average cost, which approximates FIFO, or net realizable value. The cost of inventories includes inbound freight costs.
Property, Plant and Equipment, Planned Major Maintenance Activities, Policy [Policy Text Block]	Energy The direct-expense method of accounting is used for planned major maintenance activities. Maintenance costs are recognized as expense when maintenance services are performed. Planned major maintenance activities for CVR Energy's nitrogen plant generally occur every two to three years. The required frequency of planned major maintenance activities varies by unit for the refineries, but generally is every four to five years. For the years ended December 31, 2018, 2017, and 2016, our Energy segment recorded an aggregate of $10 million, $83 million and $38 million, respectively, in turnaround expenses related to its refineries and nitrogen fertilizer plants.
Revenue Recognition, Policy [Policy Text Block]	Energy Revenue: Our Energy segment revenues from the sale of petroleum products are recorded upon delivery of the products to customers, which is the point at which title is transferred and the customer has assumed the risk of loss. This generally takes place as product passes into the pipeline, as a product transfer order occurs within a pipeline system, or as product enters equipment or locations supplied or designated by the customer. For our Energy segment's nitrogen fertilizer products sold, revenues are recorded at the point in time at which the customer obtains control of the product, which is generally upon delivery and acceptance by the customer. Nitrogen fertilizer products are sold on a wholesale basis under a contract or by purchase order. Excise and other taxes collected from customers and remitted to governmental authorities by our Energy segment are not included in reported revenues. The petroleum business' contracts with its customers state the terms of the sale, including the description, quantity, and price of each product sold. Depending on the product sold, payment from customers is generally due in full within 2 to 30 days of product delivery or invoice date. Many of the petroleum business' contracts have index-based pricing which is considered variable consideration that should be estimated in determining the transaction price. Our Energy segment determined that it does not need to estimate the variable consideration because the uncertainty related to the consideration is resolved on the pricing date or the date when the product is delivered. The nitrogen fertilizer business has an immaterial amount of variable consideration for contracts with an original duration of less than a year. A small portion of the nitrogen fertilizer partnership's revenue includes contracts extending beyond one year and contain variable pricing in which the majority of the variability is attributed to the market-based pricing. The nitrogen fertilizer business' contracts do not contain a significant financing component.
Shipping and Handling Cost, Policy [Policy Text Block]	EnergyShipping Costs: Our Energy segment's pass-through finished goods delivery costs reimbursed by customers are reported in net sales, while an offsetting expense is included in cost of goods sold.
Automotive Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	AutomotiveRevenue: Our Automotive segment recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Our Automotive segment revenue from retail and commercial parts sales is measured based on consideration specified in a contract with a customer and excludes any sales incentives and amounts collected on behalf of third parties. Automotive service revenues are recognized on completion of the service and consist of products and the labor charged for installing products or maintaining or repairing vehicles. Automotive services labor revenues are included in other revenues from operations in our consolidated statements of operations, however, the sale of any installed parts or materials related to automotive services are included in net sales. Our Automotive segment recognizes revenues from extended warranties offered to its customers on tires its sells, including lifetime warranties for road hazard assistance (recognized over 3 years) and 1-year, 3-year and lifetime plans for alignments (recognized over 1 year, 3 years and 5 years, respectively), for which it receives payment upfront. Revenues from extended warranties are recognized over the term of the warranty contract with the satisfaction of its performance obligations measured using the output method. Our Automotive segment recognizes revenues from franchise fees, which it receives payment upfront, and franchise royalties, for which it receives payment over time. Revenues from upfront franchise fees are recognized at the time the store opens, as that is when our Automotive segment's performance obligations are deemed complete, and revenues from franchise royalties are recognized in the period in which royalties are earned, generally based on a percentage of franchise sales.
Shipping and Handling Cost, Policy [Policy Text Block]	Automotive Shipping Costs: Our Automotive segment recognizes shipping and handling costs as incurred and is included in selling, general and administrative in the consolidated statements of operations for its commercial and retail parts businesses.
Food Packaging Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	Food PackagingOur Food Packaging segment revenues are recognized at the time products are shipped to the customer, under F.O.B. shipping point or F.O.B. port terms, which is the point at which title is transferred, the customer has the assumed risk of loss, and payment has been received or collection is reasonably assumed. Revenues are net of discounts, rebates and allowances. Viskase records all labor, raw materials, in-bound freight, plant receiving and purchasing, warehousing, handling and distribution costs as a component of costs of goods sold.
Metals Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	MetalsOur Metals segment inventories are stated at the lower of cost or market. Cost is determined using the average cost method. The production and accounting process utilized by our Metals segment to record recycled metals inventory quantities relies on significant estimates. Our Metals segment relies upon perpetual inventory records that utilize estimated recoveries and yields that are based upon historical trends and periodic tests for certain unprocessed metal commodities. Over time, these estimates are reasonably good indicators of what is ultimately produced; however, actual recoveries and yields can vary depending on product quality, moisture content and source of the unprocessed metal. To assist in validating the reasonableness of the estimates, our Metals segment performs periodic physical inventories which involve the use of estimation techniques. Physical inventories may detect significant variations in volume, but because of variations in product density and production processes utilized to manufacture the product, physical inventories will not generally detect smaller variations. To help mitigate this risk, our Metals segment adjusts its physical inventories when the volume of a commodity is low and a physical inventory can more accurately estimate the remaining volume.
Revenue Recognition, Policy [Policy Text Block]	MetalsOur Metals segment's primary source of revenue is from the sale of processed ferrous scrap metal, non-ferrous scrap metals, steel pipe and steel plate. PSC Metals also generates revenues from sales of secondary plate and pipe, the brokering of scrap metals and from services performed. All sales are recognized when title passes to the customer. Revenues from services are recognized as the service is performed. Sales adjustments related to price and weight differences are reflected as a reduction of revenues when settled.
Real Estate Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition: Revenue from real estate sales and related costs are recognized at the time of closing primarily by specific identification. Substantially all of the property comprising our net lease portfolio is leased to others under long-term net leases and we account for these leases in accordance with applicable U.S. GAAP. We account for our leases as follows: (i) under the financing method, (x) minimum lease payments to be received plus the estimated value of the property at the end of the lease are considered the gross investment in the lease and (y) unearned income, representing the difference between gross investment and actual cost of the leased property, is amortized to income over the lease term so as to produce a constant periodic rate of return on the net investment in the lease; and (ii) under the operating method, revenue is recognized as rentals become due, and expenses (including depreciation) are charged to operations as incurred.
Home Fashion Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue Recognition, Policy [Policy Text Block]	Home FashionOur Home Fashion segment records revenue upon delivery and when title is transferred and the customer has assumed the risk of loss. Unless otherwise agreed in writing, title and risk of loss pass from WPH to the customer when WPH delivers the merchandise to the designated point of delivery, to the designated point of destination or to the designated carrier, free on board. Provisions for certain rebates, sales incentives, product returns and discounts to customers are recorded in the same period the related revenue is recorded.
Revenue Recognition, Incentives [Policy Text Block]	Home FashionOur Home Fashion segment records revenue upon delivery and when title is transferred and the customer has assumed the risk of loss. Unless otherwise agreed in writing, title and risk of loss pass from WPH to the customer when WPH delivers the merchandise to the designated point of delivery, to the designated point of destination or to the designated carrier, free on board. Provisions for certain rebates, sales incentives, product returns and discounts to customers are recorded in the same period the related revenue is recorded.
Mining Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	MiningOur Mining segment inventories are valued at the lower of cost or market. Cost includes all costs incurred in the normal course of business in bringing each product to its present location and condition, including direct materials and direct labor costs, and an allocation of production overheads based on normal production capacity. Cost is calculated using weighted average unit cost.
Mining exploration and evaluation expenditures, Policy [Policy Text Block]	Mining The costs of acquiring mineral reserves and resources for our Mining segment are capitalized in the consolidated balance sheets as incurred. Capitalized mineral reserves and mine development expenditures are, upon commencement of commercial production, depreciated using a unit of production method based on the estimated economically recoverable reserves to which they relate, or are written off if abandoned. Exploration and evaluation expenditures relate to costs incurred in the exploration and evaluation of potential mineral reserves and include costs such as exploratory drilling, sample testing and the costs of feasibility studies. For our Mining segment, exploration and evaluation expenditures other than that acquired through the purchase of another mining company, are expensed as incurred. Purchased exploration and evaluation assets are recognized as assets at their cost of acquisition or at fair value if purchased as part of a business combination. Expenditures are transferred to mine development assets once the work completed supports the future development of the property, provided that technical feasibility and commercial viability studies have been successfully completed.
Revenue Recognition, Policy [Policy Text Block]	MiningOur Mining segment recognizes revenue when title, ownership, and risk of loss pass to the customer, all of which occur upon shipment or delivery of the product and is based on the applicable shipping terms. Revenue is measured at the fair value of the consideration received or receivable, with any adjustments as a result of provisional pricing recorded against revenue.
Other Segments and Holding Company
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Equity Method Investments [Policy Text Block]	Except for our Investment segment, for equity investments in which we own 50% or less but greater than 20%, we generally account for such investments using the equity method. All other equity investments are accounted for at fair value.
Investment, Policy [Policy Text Block]	Other Segments and Holding CompanyInvestments in equity and debt securities are carried at fair value with the unrealized gains or losses reflected in the consolidated statements of operations. For purposes of determining gains and losses, the cost of securities is based on specific identification. Dividend income is recorded when declared and interest income is recognized when earned.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency TranslationExchange adjustments related to international currency transactions and translation adjustments for international subsidiaries whose functional currency is the U.S. dollar (principally those located in highly inflationary economies) are reflected in the consolidated statements of operations. Translation adjustments of international subsidiaries for which the local currency is the functional currency are reflected in the consolidated balance sheets as a component of accumulated other comprehensive income. Deferred taxes are not provided on translation adjustments, other than for intercompany loans not designated as permanently reinvested, as the earnings of the subsidiaries are considered to be permanently reinvested.
Automotive, Food Packaging and Home Fashion Segments
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Inventory, Policy [Policy Text Block]	Automotive, Food Packaging, and Home FashionOur Automotive, Food Packaging and Home Fashion segment inventories are stated at the lower of cost or market. Cost is determined by using the first-in, first-out basis method ("FIFO"), except for our Automotive segment, which also utilizes weighted-average cost and the last-in, first-out method for certain of its subsidiaries. Inventory recorded using the last-in, first-out method was $846 million and $900 million as of December 31, 2018 and 2017, respectively, all of which relates to finished goods. The cost of manufactured goods includes the cost of direct materials, labor and manufacturing overhead. Our Automotive, Food Packaging and Home Fashion segments reserve for estimated excess, slow-moving and obsolete inventory as well as inventory whose carrying value is in excess of net realizable value.

Fair Value Measurements (Policies)	12 Months Ended
Fair Value Measurements (Policies)	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Determination of when transfers between fair value levels occurs	In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the investments', non-financial assets' and/or liabilities' level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and consideration of factors specific to the investment. Significant transfers, if any, between the levels within the fair value hierarchy are recognized at the beginning of the reporting period when changes in circumstances require such transfers.

Financial Instruments (Policies)	12 Months Ended
Financial Instruments (Policies)	Dec. 31, 2018
Financial Instruments [Abstract]
Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block]	Excludes netting of cash collateral received and posted.

Goodwill and Intangible Assets, Net (Policies)	12 Months Ended
Goodwill and Intangible Assets, Net (Policies)	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	We utilize the straight-line method of amortization, recognized over the estimated useful lives of the assets.

Segment and Geographic Reporting (Policies)	12 Months Ended
Segment and Geographic Reporting (Policies)	Dec. 31, 2018
Segment Reporting [Abstract]
Segment Reporting, Policy [Policy Text Block]	We report segment information based on the various industries in which our businesses operate and how we manage those businesses in accordance with our investment strategies, which may include: identifying and acquiring undervalued assets and businesses, often through the purchase of distressed securities; increasing value through management, financial or other operational changes; and managing complex legal, regulatory or financial issues, which may include bankruptcy or insolvency, environmental, zoning, permitting and licensing issues. Therefore, although many of our businesses are operated under separate local management, certain of our businesses are grouped together when they operate within a similar industry, comprising similarities in products, customers, production processes and regulatory environments, and when such businesses, when considered together, may be managed in accordance with one or more investment strategies specific to those businesses. Among other measures, we assess and measure segment operating results based on net income from continuing operations attributable to Icahn Enterprises and Icahn Enterprises Holdings. Certain terms of financings for certain of our businesses impose restrictions on the business' ability to transfer funds to us, including restrictions on dividends, distributions, loans and other transactions.

Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Basis of Presentation and Summary of Significant Accounting Policies [Abstract]

Schedule of Variable Interest Entities



	December 31,
	2018		2017
	(in millions)
Cash and cash equivalents	$	415	$	223
Cash held at consolidated affiliated partnerships and restricted cash	2,648		734
Investments	6,951		9,615
Due from brokers	664		506
Property, plant and equipment, net	3,027		3,185
Inventories, net	380		369
Intangible assets, net	278		298
Other assets	863		267
Accounts payable, accrued expenses and other liabilities	516		1,815
Securities sold, not yet purchased, at fair value	468		1,023
Due to brokers	141		1,057
Debt	1,170		1,166

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

+ References + Details

Investments and Related Matters (Tables)

12 Months Ended

Dec. 31, 2018

Investment Segment

Investment and Related Matters [Line Items]

Investment



	December 31,
	2018		2017
Assets	(in millions)
Investments:
Equity securities:
Basic materials	$	414	$	1,170
Consumer, non-cyclical	2,161		2,551
Consumer, cyclical	1,161		777
Energy	1,598		1,489
Financial	167		2,185
Technology	1,040		833
Other	145		372
	6,686		9,377
Corporate debt securities	181		155
	$	6,867	$	9,532
Liabilities
Securities sold, not yet purchased, at fair value:
Equity securities:
Consumer, non-cyclical	$	57	$	101
Consumer, cyclical	106		667
Energy	305		110
Industrial	—		110
	468		988
Corporate debt securities	—		35
	$	468	$	1,023

Other Segments and Holding Company

Investment and Related Matters [Line Items]

Investment



	December 31,
	2018		2017
	(in millions)
Equity method investments	$	143	$	83
Other investments (measured at fair value)	1,327		400
	$	1,470	$	483

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Assets measured at fair value on a recurring basis



	December 31, 2018								December 31, 2017
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets	(in millions)
Investments (Note 4)	$	7,493	$	317	$	372	$	8,182	$	9,378	$	264	$	278	$	9,920
Derivative contracts, at fair value (Note 6)⁽¹⁾	7		517		—		524		—		—		—		—
	$	7,500	$	834	$	372	$	8,706	$	9,378	$	264	$	278	$	9,920
Liabilities
Securities sold, not yet purchased (Note 4)	$	468	$	—	$	—	$	468	$	988	$	35	$	—	$	1,023
Other liabilities	—		2		—		2		—		1		—		1
Derivative contracts, at fair value (Note 6)	—		36		—		36		36		1,239		—		1,275
	$	468	$	38	$	—	$	506	$	1,024	$	1,275	$	—	$	2,299


⁽¹⁾	Amounts are classified within other assets in our consolidated balance sheets.

Assets measured at fair value on a recurring basis for which we use Level 3 inputs to determine fair value



	Year Ended December 31,
	2018			2017
	(in millions)
Balance at January 1	$	278		$	211
Net unrealized gains	95			67
Other	(1		)	—
Balance at December 31	$	372		$	278

Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Derivative [Line Items]

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The following table presents the consolidated fair values of our derivatives that are not designated as hedging instruments in accordance with U.S GAAP:



	Asset Derivatives⁽¹⁾						Liability Derivatives
	December 31, 2018			December 31, 2017			December 31, 2018			December 31, 2017
	(in millions)
Equity contracts	$	568		$	—		$	170		$	1,159
Credit contracts	76			—			—			17
Commodity contracts	15			7			1			106
Sub-total	659			7			171			1,282
Netting across contract types⁽²⁾	(135		)	(7		)	(135		)	(7		)
Total⁽²⁾	$	524		$	—		$	36		$	1,275


⁽¹⁾	Net asset derivatives are located within other assets in our consolidated balance sheets.


⁽²⁾	Excludes netting of cash collateral received and posted. The total collateral posted at December 31, 2018 and 2017 was $0 million and $542 million, respectively, across all counterparties, which are included in cash held at consolidated affiliated partnerships and restricted cash in our consolidated balance sheets.

The following table presents the amount of gain (loss) recognized in the consolidated statements of operations for our derivatives not designated as hedging instruments:



	Gain (Loss) Recognized in Income⁽¹⁾
	Year Ended December 31,
	2018		2017			2016
	(in millions)
Equity contracts	$	603	$	(1,815	)	$	(1,609	)
Foreign exchange contracts	—		—			35
Credit contracts	129		(42		)	44
Interest rate contracts	—		—			(28		)
Commodity contracts	212		(182		)	(101		)
	$	944	$	(2,039	)	$	(1,659	)

⁽¹⁾

Investment Segment

Derivative [Line Items]

Schedule of Notional Amounts of Outstanding Derivative Positions



	December 31, 2018				December 31, 2017
	Long Notional Exposure		Short Notional Exposure		Long Notional Exposure		Short Notional Exposure
Primary underlying risk:	(in millions)
Equity contracts	$	118	$	8,368	$	243	$	6,660
Credit contracts⁽¹⁾	—		479		—		391
Commodity contracts	—		114		—		634

⁽¹⁾

Inventories, Net (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]



	December 31,
	2018		2017
	(in millions)
Raw materials	$	217	$	199
Work in process	70		107
Finished goods	1,492		1,424
	$	1,779	$	1,730

Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill



	December 31, 2018									December 31, 2017
	Automotive			Food Packaging			Consolidated			Automotive		Food Packaging		Consolidated
	(in millions)
Gross carrying amount, Jan 1	$	320		$	7		$	327		$	320	$	4	$	324
Acquisitions	8			—			8			—		3		3
Foreign exchange	—			(1		)	(1		)	—		—		—
Gross carrying amount, Dec 31	328			6			334			320		7		327

Accumulated impairment, Jan 1	—			—			—			—		—		—
Impairment	(87		)	—			(87		)	—		—		—
Accumulated impairment, Dec 31	(87		)	—			(87		)	—		—		—

Net carrying value, Dec 31	$	241		$	6		$	247		$	320	$	7	$	327

Schedule of Definite-Lived and Infinite-Lived Intangible Assets



	December 31, 2018							December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
	(in millions)
Definite-lived intangible assets:
Customer relationships	$	396	$	(134	)	$	262	$	397	$	(115	)	$	282
Other	316		(139		)	177		334		(134		)	200
	$	712	$	(273	)	$	439	$	731	$	(249	)	$	482

Indefinite-lived intangible assets						$	62						$	62
Intangible assets, net						$	501						$	544

Schedule of Definite-Lived Intangible Assets, Future Amortization Expense



Year	Amount
	(in millions)
2019	$	45
2020	44
2021	37
2022	36
2023	34
Thereafter	243
	$	439

Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment, Net



		December 31,
	Useful Life	2018			2017
	(in years)	(in millions)
Land		$	416		$	508
Buildings and improvements	3 - 40	1,772			1,715
Machinery, equipment and furniture	1 - 30	4,313			4,326
Assets leased to others	5 - 39	279			388
Construction in progress		221			201
		7,001			7,138
Less: Accumulated depreciation and amortization		(2,298		)	(1,952		)
Property, plant and equipment, net		$	4,703		$	5,186

Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments



	December 31,
	2018		2017
	(in millions)
Holding Company:
6.000% senior unsecured notes due 2020	$	1,702	$	1,703
5.875% senior unsecured notes due 2022	1,344		1,342
6.250% senior unsecured notes due 2022	1,213		1,216
6.750% senior unsecured notes due 2024	498		498
6.375% senior unsecured notes due 2025	748		748
	5,505		5,507
Reporting Segments:
Energy	1,170		1,166
Automotive	372		340
Food Packaging	273		273
Metals	—		1
Real Estate	2		22
Home Fashion	4		5
Mining	—		58
	1,821		1,865
Total Debt	$	7,326	$	7,372

Schedule of Maturities of Long-term Debt



Year	Amount
	(in millions)
2019	$	27
2020	1,718
2021	620
2022	3,059
2023	648
Thereafter	1,280
	7,352
Unamortized discounts, premiums and deferred financing fees	(26		)
Total Debt	$	7,326

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Net Income Per LP Unit (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Unit [Abstract]

Schedule Of Earnings Per LP Unit



	Year Ended December 31,
	2018			2017		2016
	(in millions, except per unit data)
Net (loss) income attributable to Icahn Enterprises from continuing operations	$	(213	)	$	2,273	$	(1,127	)
Net (loss) income attributable to Icahn Enterprises from continuing operations allocated to limited partners (98.01% allocation)	$	(209	)	$	2,228	$	(1,105	)

Net income (loss) attributable to Icahn Enterprises from discontinued operations	$	1,720		$	157	$	(1	)
Less: net loss attributable to Icahn Enterprises from discontinued operations allocated 100% to general partner	598			—		—
Net income (loss) attributable to Icahn Enterprises from discontinued operations allocable to limited partners	$	2,318		$	157	$	(1	)
Net income (loss) attributable to Icahn Enterprises from discontinued operations allocated to limited partners (98.01% allocation)	$	2,272		$	154	$	(1	)

Basic and diluted income (loss) per LP unit:
Continuing operations	$	(1.16	)	$	13.84	$	(8.07	)
Discontinued operations	12.62			0.96		0.00
	$	11.46		$	14.80	$	(8.07	)
Basic and diluted weighted average LP units outstanding	180			161		137

Segment and Geographic Reporting (Tables)

12 Months Ended

Dec. 31, 2018

Disaggregation of Revenue [Line Items]

Schedule of Condensed Income Statement by Segment



	Year Ended December 31, 2018
	Investment			Energy			Automotive			Food Packaging			Metals			Real Estate			Home Fashion			Mining			Railcar			Holding Company			Consolidated
	(in millions)
Revenues:
Net sales	$	—		$	7,124		$	2,295		$	395		$	466		$	22		$	171		$	103		$	—		$	—		$	10,576
Other revenues from operations	—			—			563			—			—			84			—			—			—			—			647
Net gain (loss) from investment activities	635			—			—			—			—			—			—			—			—			(313		)	322
Interest and dividend income	104			2			—			1			—			16			—			1			—			24			148
(Loss) gain on disposition of assets, net	—			(6		)	(1		)	—			—			89			—			(3		)	5			—			84
Other (loss) income, net	(2		)	15			(1		)	(17		)	1			1			—			5			—			(2		)	—
	737			7,135			2,856			379			467			212			171			106			5			(291		)	11,777
Expenses:
Cost of goods sold	—			6,453			1,502			316			441			18			144			73			—			—			8,947
Other expenses from operations	—			—			474			—			—			54			—			—			1			—			529
Selling, general and administrative	12			138			1,051			57			19			22			34			27			1			25			1,386
Restructuring, net	—			5			5			9			—			—			2			—			—			—			21
Impairment	—			—			90			—			1			—			1			—			—			—			92
Interest expense	46			104			16			16			—			1			1			3			—			337			524
	58			6,700			3,138			398			461			95			182			103			2			362			11,499
Income (loss) from continuing operations before income tax (expense) benefit	679			435			(282		)	(19		)	6			117			(11		)	3			3			(653		)	278
Income tax (expense) benefit	—			(56		)	52			4			(1		)	(5		)	—			(2		)	(2		)	14			4
Net income (loss) from continuing operations	679			379			(230		)	(15		)	5			112			(11		)	1			1			(639		)	282
Less: net income (loss) from continuing operations attributable to non-controlling interests	360			141			—			(3		)	—			—			—			(2		)	—			(1		)	495
Net income (loss) from continuing operations attributable to Icahn Enterprises	$	319		$	238		$	(230	)	$	(12	)	$	5		$	112		$	(11	)	$	3		$	1		$	(638	)	$	(213	)

Supplemental information:
Capital expenditures	$	—		$	102		$	66		$	25		$	21		$	13		$	5		$	40		$	—		$	—		$	272
Depreciation and amortization	$	—		$	278		$	92		$	26		$	18		$	19		$	8		$	6		$	—		$	—		$	447



	Year Ended December 31, 2017
	Investment			Energy			Automotive			Food Packaging			Metals			Real Estate		Home Fashion			Mining			Railcar			Holding Company			Consolidated
	(in millions)
Revenues:
Net sales	$	—		$	5,988		$	2,225		$	392		$	409		$	15	$	183		$	94		$	—		$	—		$	9,306
Other revenues from operations	—			—			498			—			—			72		—			—			173			—			743
Net gain from investment activities	241			—			—			—			—			—		—			—			—			61			302
Interest and dividend income	106			1			—			—			—			7		—			1			—			12			127
(Loss) gain on disposition of assets, net	—			(3		)	5			—			—			496		—			—			1,664			1			2,163
Other (loss) income, net	(50		)	2			—			(3		)	(1		)	38		—			(2		)	—			(6		)	(22		)
	297			5,988			2,728			389			408			628		183			93			1,837			68			12,619
Expenses:
Cost of goods sold	—			5,799			1,540			297			389			11		162			60			—			—			8,258
Other expenses from operations	—			—			438			—			—			46		—			—			34			—			518
Selling, general and administrative	13			143			919			61			19			18		39			14			10			33			1,269
Restructuring, net	—			—			—			2			1			—		1			—			—			—			4
Impairment	—			—			15			1			—			2		1			—			68			—			87
Interest expense	166			109			13			13			—			2		—			6			23			323			655
	179			6,051			2,925			374			409			79		203			80			135			356			10,791
Income (loss) from continuing operations before income tax benefit (expense)	118			(63		)	(197		)	15			(1		)	549		(20		)	13			1,702			(288		)	1,828
Income tax benefit (expense)	—			338			146			(21		)	(43		)	—		—			(3		)	(531		)	643			529
Net income (loss) from continuing operations	118			275			(51		)	(6		)	(44		)	549		(20		)	10			1,171			355			2,357
Less: net income (loss) from continuing operations attributable to non-controlling interests	38			46			—			(1		)	—			—		—			1			—			—			84
Net income (loss) from continuing operations attributable to Icahn Enterprises	$	80		$	229		$	(51	)	$	(5	)	$	(44	)	$	549	$	(20	)	$	9		$	1,171		$	355		$	2,273

Supplemental information:
Capital expenditures	$	—		$	120		$	86		$	26		$	30		$	9	$	5		$	38		$	2		$	—		$	316
Depreciation and amortization	$	—		$	278		$	111		$	25		$	20		$	20	$	8		$	5		$	7		$	—		$	474



	Year Ended December 31, 2016
	Investment			Energy			Automotive			Food Packaging			Metals			Real Estate		Home Fashion			Mining			Railcar		Holding Company			Consolidated
	(in millions)
Revenues:
Net sales	$	—		$	4,782		$	2,079		$	329		$	267		$	17	$	195		$	71		$	—	$	—		$	7,740
Other revenues from operations	—			—			422			—			—			71		—			—			347		—			840
Net (loss) gain from investment activities	(1,388		)	5			—			—			—			—		—			—			—		10			(1,373		)
Interest and dividend income	112			1			—			—			—			—		—			2			—		9			124
Gain on disposition of assets, net	—			—			1			—			1			1		—			—			3		—			6
Other income (loss), net	53			(5		)	1			(1		)	1			—		1			(10		)	—		2			42
	(1,223		)	4,783			2,503			328			269			89		196			63			350		21			7,379
Expenses:
Cost of goods sold	—			4,637			1,430			249			284			13		168			56			—		—			6,837
Other expenses from operations	—			—			430			—			—			46		—			—			155		—			631
Selling, general and administrative	34			138			648			48			18			18		38			22			16		21			1,001
Restructuring	—			—			—			3			2			—		—			—			—		—			5
Impairment	—			574			1			—			1			5		2			—			—		3			586
Interest expense	230			83			7			12			—			2		—			7			62		289			692
	264			5,432			2,516			312			305			84		208			85			233		313			9,752
(Loss) income from continuing operations before income tax benefit (expense)	(1,487		)	(649		)	(13		)	16			(36		)	5		(12		)	(22		)	117		(292		)	(2,373		)
Income tax benefit (expense)	—			45			32			(8		)	16			—		—			(2		)	—		5			88
Net (loss) income from continuing operations	(1,487		)	(604		)	19			8			(20		)	5		(12		)	(24		)	117		(287		)	(2,285		)
Less: net (loss) income from continuing operations attributable to non-controlling interests	(883		)	(277		)	—			2			—			—		—			(5		)	5		—			(1,158		)
Net (loss) income from continuing operations attributable to Icahn Enterprises	$	(604	)	$	(327	)	$	19		$	6		$	(20	)	$	5	$	(12	)	$	(19	)	$	112	$	(287	)	$	(1,127	)

Supplemental information:
Capital expenditures	$	—		$	133		$	37		$	18		$	5		$	1	$	11		$	22		$	20	$	—		$	247
Depreciation and amortization	$	—		$	258		$	98		$	20		$	22		$	22	$	8		$	6		$	92	$	—		$	526

Schedule of Condensed Financial Statements by Segment



	December 31, 2018
	Investment		Energy		Automotive		Food Packaging		Metals		Real Estate		Home Fashion		Mining		Railcar		Holding Company			Consolidated
	(in millions)
ASSETS
Cash and cash equivalents	$	5	$	668	$	43	$	46	$	20	$	39	$	1	$	—	$	—	$	1,834		$	2,656
Cash held at consolidated affiliated partnerships and restricted cash	2,648		—		—		1		1		26		2		—		—		4			2,682
Investments	6,867		84		59		—		—		15		—		—		—		1,312			8,337
Accounts receivable, net	—		169		149		74		48		3		31		—		—		—			474
Inventories, net	—		380		1,203		93		39		—		64		—		—		—			1,779
Property, plant and equipment, net	—		3,042		941		169		115		367		69		—		—		—			4,703
Goodwill and intangible assets, net	—		278		412		32		2		24		—		—		—		—			748
Assets held for sale	—		33		—		—		1		—		—		299		—		—			333
Other assets	1,230		84		217		96		7		34		5		—		—		11			1,684
Total assets	$	10,750	$	4,738	$	3,024	$	511	$	233	$	508	$	172	$	299	$	—	$	3,161		$	23,396
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	$	40	$	1,025	$	905	$	164	$	56	$	41	$	35	$	—	$	—	$	178		$	2,444
Securities sold, not yet purchased, at fair value	468		—		—		—		—		—		—		—		—		—			468
Due to brokers	141		—		—		—		—		—		—		—		—		—			141
Liabilities held for sale	—		—		—		—		—		—		—		112		—		—			112
Debt	—		1,170		372		273		—		2		4		—		—		5,505			7,326
Total liabilities	649		2,195		1,277		437		56		43		39		112		—		5,683			10,491

Equity attributable to Icahn Enterprises	5,066		1,243		1,747		55		177		465		133		165		—		(2,522		)	6,529
Equity attributable to non-controlling interests	5,035		1,300		—		19		—		—		—		22		—		—			6,376
Total equity	10,101		2,543		1,747		74		177		465		133		187		—		(2,522		)	12,905
Total liabilities and equity	$	10,750	$	4,738	$	3,024	$	511	$	233	$	508	$	172	$	299	$	—	$	3,161		$	23,396



	December 31, 2017
	Investment		Energy		Automotive		Food Packaging		Metals		Real Estate		Home Fashion		Mining		Railcar		Holding Company			Discontinued Operations		Consolidated
	(in millions)
ASSETS
Cash and cash equivalents	$	17	$	482	$	52	$	16	$	24	$	32	$	—	$	15	$	—	$	526		$	—	$	1,164
Cash held at consolidated affiliated partnerships and restricted cash	734		—		—		2		5		2		4		—		—		—			—		747
Investments	9,532		83		—		—		—		16		—		—		—		384			—		10,015
Accounts receivable, net	—		179		128		78		40		3		35		10		—		—			—		473
Inventories, net	—		364		1,145		92		33		—		66		30		—		—			—		1,730
Property, plant and equipment, net	—		3,234		958		170		110		454		72		188		—		—			—		5,186
Goodwill and intangible assets, net	—		298		505		36		3		29		—		—		—		—			—		871
Assets held for sale	—		—		—		—		2		—		—		—		14		—			10,247		10,263
Other assets	516		60		223		93		9		395		6		22		—		28			—		1,352
Total assets	$	10,799	$	4,700	$	3,011	$	487	$	226	$	931	$	183	$	265	$	14	$	938		$	10,247	$	31,801
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	$	1,302	$	1,125	$	944	$	172	$	43	$	63	$	34	$	45	$	—	$	243		$	—	$	3,971
Securities sold, not yet purchased, at fair value	1,023		—		—		—		—		—		—		—		—		—			—		1,023
Due to brokers	1,057		—		—		—		—		—		—		—		—		—			—		1,057
Liabilities held for sale	—		—		—		—		—		—		—		—		—		—			7,010		7,010
Debt	—		1,166		340		273		1		22		5		58		—		5,507			—		7,372
Total liabilities	3,382		2,291		1,284		445		44		85		39		103		—		5,750			7,010		20,433

Equity attributable to Icahn Enterprises	3,052		1,098		1,727		28		182		846		144		138		14		(4,821		)	2,698		5,106
Equity attributable to non-controlling interests	4,365		1,311		—		14		—		—		—		24		—		9			539		6,262
Total equity	7,417		2,409		1,727		42		182		846		144		162		14		(4,812		)	3,237		11,368
Total liabilities and equity	$	10,799	$	4,700	$	3,011	$	487	$	226	$	931	$	183	$	265	$	14	$	938		$	10,247	$	31,801

Geographic Information



	Net Sales						Other Revenues From Operations						Property, Plant and Equipment, Net
	Year Ended December 31,						Year Ended December 31,						December 31,
	2018		2017		2016		2018		2017		2016		2018		2017
	(in millions)
United States	$	10,172	$	8,893	$	7,412	$	629	$	716	$	791	$	4,432	$	4,776
International	404		413		328		18		27		49		271		410
	$	10,576	$	9,306	$	7,740	$	647	$	743	$	840	$	4,703	$	5,186

Energy Segment

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue [Table Text Block]



	Year Ended December 31,
	2018		2017		2016
	(in millions)
Petroleum products	$	6,773	$	5,657	$	4,426
Nitrogen fertilizer products	351		331		356
	$	7,124	$	5,988	$	4,782

Automotive Segment

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue [Table Text Block]



	Year Ended December 31,
	2018		2017		2016
	(in millions)
Automotive services	$	1,321	$	1,186	$	998
Aftermarket parts sales	1,537		1,537		1,503
	$	2,858	$	2,723	$	2,501

Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2018

Discontinued Operations. [Abstract]

Disposal Groups, Including Discontinued Operations [Table Text Block]



	Year Ended December 31, 2018												Year Ended December 31, 2017											Year Ended December 31, 2016
	Automotive			Gaming			Railcar			Total			Automotive			Gaming			Railcar		Total			Automotive			Gaming			Railcar			Total
Revenues:	(in millions)
Net sales	$	5,993		$	—		$	228		$	6,221		$	7,720		$	—		$	265	$	7,985		$	7,341		$	—		$	430		$	7,771
Other revenues from operations	—			679			213			892			—			898			197		1,095			—			943			175			1,118
Net gain on investment activities	—			—			—			—			—			—			2		2			—			—			—			—
Interest and dividend income	2			1			2			5			6			1			2		9			4			1			2			7
Gain (loss) on disposition of assets, net	65			—			—			65			7			(1		)	—		6			8			—			—			8
Other income, net	5			1			13			19			31			27			3		61			31			3			5			39
	6,065			681			456			7,202			7,764			925			469		9,158			7,384			947			612			8,943
Expenses:
Cost of goods sold	4,999			—			215			5,214			6,553			—			249		6,802			6,215			—			366			6,581
Other expenses from operations	—			311			114			425			—			425			100		525			—			460			68			528
Selling, general and administrative	601			238			40			879			862			371			37		1,270			845			432			32			1,309
Restructuring, net	13			—			—			13			21			—			—		21			27			—			—			27
Impairment	2			—			4			6			25			—			—		25			17			106			—			123
Interest expense	137			4			19			160			154			11			22		187			150			13			23			186
	5,752			553			392			6,697			7,615			807			408		8,830			7,254			1,011			489			8,754
Income (loss) from discontinued operations before gain (loss) on sale and income tax (expense) benefit	313			128			64			505			149			118			61		328			130			(64		)	123			189
Gain (loss) on sale of discontinued operations	251			779			400			1,430			—			(3		)	—		(3		)	—			—			—			—
Income (loss) from discontinued operations before income tax (expense) benefit	564			907			464			1,935			149			115			61		325			130			(64		)	123			189
Income tax (expense) benefit	(69		)	(89		)	(13		)	(171		)	(33		)	(93		)	35		(91		)	(43		)	(24		)	(57		)	(124		)
Income (loss) from discontinued operations	495			818			451			1,764			116			22			96		234			87			(88		)	66			65
Less: income from discontinued operations attributable to non-controlling interests	7			17			20			44			11			13			53		77			24			14			28			66
Income (loss) from discontinued operations attributable to Icahn Enterprises	$	488		$	801		$	431		$	1,720		$	105		$	9		$	43	$	157		$	63		$	(102	)	$	38		$	(1	)

Supplemental information:
Capital expenditures	$	303		$	58		$	125		$	486		$	393		$	112		$	171	$	676		$	381		$	85		$	113		$	579
Depreciation and amortization	$	100		$	19		$	47		$	166		$	397		$	73		$	58	$	528		$	375		$	71		$	42		$	488



	December 31, 2017
	Automotive		Gaming		Railcar		Total
Assets Held For Sale	(in millions)
Cash and cash equivalents	$	315	$	103	$	100	$	518
Restricted cash	4		16		19		39
Investments	324		7		23		354
Accounts receivable, net	1,182		11		44		1,237
Inventories, net	1,456		—		54		1,510
Property, plant and equipment, net	2,545		792		1,199		4,536
Goodwill	941		—		7		948
Intangible assets, net	517		74		—		591
Other assets	394		93		27		514
Assets held for sale (discontinued operations)	$	7,678	$	1,096	$	1,473	$	10,247
Other assets held for sale							16
Total assets held for sale							$	10,263
Liabilities Held For Sale
Accounts payable, accrued expenses and other liabilities	$	1,718	$	142	$	62	$	1,922
Deferred tax liability	—		—		192		192
Post-retirement benefit liability	1,075		—		8		1,083
Debt	3,130		137		546		3,813
Liabilities held for sale (discontinued operations)	$	5,923	$	279	$	808	$	7,010

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3A
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 205
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721677-107760

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 205
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-Section 45
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721659-107760

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 205
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-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721663-107760

+ Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

difference in book basis and tax basis of net assets not subject to income taxes [Table Text Block]



	Icahn Enterprises						Icahn Enterprises Holdings
	December 31,						December 31,
	2018			2017			2018			2017
	(in millions)						(in millions)
Book basis of net assets	$	6,529		$	5,106		$	6,557		$	5,133
Book/tax basis difference	(1,940		)	(450		)	(1,940		)	(450		)
Tax basis of net assets	$	4,589		$	4,656		$	4,617		$	4,683

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]



	Year Ended December 31,
	2018			2017		2016
	(in millions)
Domestic	$	290		$	1,798	$	(2,370	)
International	(12		)	30		(3		)
	$	278		$	1,828	$	(2,373	)

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Current:
Domestic	$	(11	)	$	(15	)	$	(28	)
International	(4		)	(13		)	(18		)
Total current	(15		)	(28		)	(46		)
Deferred:
Domestic	20			544			131
International	(1		)	13			3
Total deferred	19			557			134
	$	4		$	529		$	88

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Income tax benefit (expense) at U.S. statutory rate	$	(58	)	$	(640	)	$	831
Tax effect from:
Valuation allowance	(4		)	529			(46		)
Non-controlling interest	26			(6		)	(6		)
Goodwill impairment	(18		)	—			(226		)
Stock dispositions	69			—			—
Income not subject to taxation	14			220			(440		)
Enactment of U.S. tax legislation, net of valuation allowance	—			392			—
Other	(25		)	34			(25		)
Income tax benefit (expense)	$	4		$	529		$	88

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]



	December 31,
	2018			2017
	(in millions)
Deferred tax assets:
Property, plant and equipment	$	17		$	61
Net operating loss	791			711
Tax credits	46			71
Capital loss	50			—
Post-retirement benefits, including pensions	—			162
Other	82			248
Total deferred tax assets	986			1,253
Less: Valuation allowance	(518		)	(483		)
Net deferred tax assets	$	468		$	770

Deferred tax liabilities:
Property, plant and equipment	$	(129	)	$	(235	)
Intangible assets	(33		)	(115		)
Investment in partnerships	(681		)	(774		)
Investment in U.S. subsidiaries	(184		)	(184		)
Other	(80		)	(119		)
Total deferred tax liabilities	(1,107		)	(1,427		)
	$	(639	)	$	(657	)

Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward [Table Text Block]



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Balance at January 1	$	34		$	52		$	56
Addition based on tax positions related to the current year	—			—			2
Increase for tax positions of prior years	6			—			—
Decrease for tax positions of prior years	—			(3		)	(1		)
Decrease for statute of limitation expiration	(6		)	(15		)	(5		)
Balance at December 31	$	34		$	34		$	52

Changes in Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2018

Changes in Accumulated Other Comprehensive Loss [Abstract]

Schedule of changes in accumulated other comprehensive income [Table Text Block]



	Post-Retirement Benefits, Net of Tax			Hedge Instruments, Net of Tax			Translation Adjustments and Other, Net of Tax			Total
	(in millions)
Balance, December 31, 2017	$	(572	)	$	(15	)	$	(797	)	$	(1,384	)
Other comprehensive income (loss) before reclassifications, net of tax	1			(3		)	(86		)	(88		)
Reclassifications from accumulated other comprehensive income to earnings	20			—			—			20
Other comprehensive income (loss), net of tax	21			(3		)	(86		)	(68		)
Dispositions of consolidated subsidiaries	504			18			846			1,368
Balance, December 31, 2018	$	(47	)	$	—		$	(37	)	$	(84	)

Other Income (Loss), Net (Tables)

12 Months Ended

Dec. 31, 2018

Other (Loss) Income, Net [Abstract]

Schedule of Other Nonoperating Income (Expense)



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Other derivative (loss) income	$	(1	)	$	(41	)	$	66
Dividend expense	(2		)	(10		)	(14		)
Loss on extinguishment of debt	—			(12		)	(5		)
Equity earnings from non-consolidated affiliates	7			1			—
Foreign currency transaction (loss) income	(1		)	1			(3		)
Tax settlement gain	—			38			—
Non-service pension and other post-retirement benefits expense	(8		)	(4		)	(4		)
Other	5			5			2
	$	—		$	(22	)	$	42

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Long-term Purchase Commitment [Line Items]

Contractual Obligation, Fiscal Year Maturity Schedule



Year	Amount
	(in millions)
2019	$	129
2020	89
2021	78
2022	76
2023	75
Thereafter	444
	$	891

Schedule of Future Minimum Rental Payments for Operating Leases



Year	Amount
	(in millions)
2019	$	196
2020	175
2021	152
2022	134
2023	85
Thereafter	235
	$	977

Pensions and Other Post-Retirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2018

Pension, Other Post-Retirement Benefits and Employee Benefit Plans. [Abstract]

Components net periodic benefit cost (credit)



	U.S. and Non-U.S. Pension Benefits
	Year Ended December 31,
	2018			2017			2016
	(in millions)
Service cost	$	1		$	1		$	1
Interest cost	6			7			7
Expected return on plan assets	(6		)	(8		)	(8		)
Amortization of actuarial losses	1			5			4
Settlement loss recognized	7			—			—
	$	9		$	5		$	4

Changes in benefit obligations and plan assets, and funded status of plans



	U.S and Non-U.S. Pension Benefits
	2018			2017
	(in millions)
Change in benefit obligation:
Benefit obligation, beginning of year	$	187		$	164
Service cost	1			1
Interest cost	6			7
Benefits paid	(8		)	(10		)
Actuarial (gain) loss	(11		)	9
Plan settlements	(28		)	—
Increase due to acquisitions	—			15
Currency translation	(1		)	1
Benefit obligation, end of year	146			187
Change in plan assets:
Fair value of plan assets, beginning of year	115			110
Actual return on plan assets	(6		)	15
Employer contributions	3			—
Plan settlements	(28		)	—
Benefits paid	(7		)	(10		)
Fair value of plan assets, end of year	77			115
Funded status of the plan and amounts recognized in the consolidated balance sheets	$	(69	)	$	(72	)
Amounts recognized in accumulated other comprehensive loss, inclusive of tax impacts	$	(45	)	$	(50	)

Defined benefit plan assets measured at fair value on a recurring basis



	December 31, 2018						December 31, 2017
	Level 1		Level 2		Total		Level 1		Level 2		Total
	(in millions)
U.S. and Non-U.S. Plans:
Cash and cash equivalents	$	3	$	—	$	3	$	4	$	—	$	4
Government debt securities	1		2		3		1		3		4
Exchange traded funds	16		—		16		26		—		26
Mutual funds	22		2		24		36		3		39
Common stock	21		—		21		33		—		33
	$	63	$	4	$	67	$	100	$	6	$	106
Investments measured at net asset value					10						9
Plan assets measured at fair value					$	77					$	115

Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2018

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures



	Year Ended December 31,
	2018		2017		2016
	(in millions)
Continuing Operations:
Cash payments for interest, net of amounts capitalized	$	484	$	499	$	489
Net cash (receipts) payments for income taxes, net of refunds	20		39		10
Capital expenditures included in accounts payable, accrued expenses and other liabilities	17		8		18
Equity investment consideration received from sale of business	1,241		—		—
Acquisition of subsidiary common stock included in accrued expenses and other liabilities	—		51		—
Seller financing secured mortgages resulting from disposition of assets	—		375		—
Investments in subsidiaries prior to acquiring a controlling interest	—		—		286
Discontinued Operations:
Capital expenditures included in accounts payable, accrued expenses and other liabilities	48		72		71

Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Data (Unaudited) [Abstract]

Schedule of Quarterly Financial Information



	For the Three Months Ended
	March 31,					June 30,				September 30,					December 31,
	2018		2017			2018		2017		2018			2017		2018			2017
	(in millions, except per unit data)
Net sales	$	2,363	$	2,310		$	2,820	$	2,277	$	2,815		$	2,334	$	2,578		$	2,385
Gross margin on net sales	390		326			406		259		457			328		376			135
Total revenues	2,983		2,378			3,423		4,353		2,569			3,406		2,802			2,482
Income (loss) from continuing operations	378		(208		)	421		1,637		(323		)	790		(194		)	138
Income from discontinued operations	45		48			167		88		176			39		1,376			59
Net income (loss)	423		(160		)	588		1,725		(147		)	829		1,182			197
Net loss (income) attributable to non-controlling interests	286		(142		)	279		172		(273		)	232		247			(101		)
Net income (loss) attributable to Icahn Enterprises	$	137	$	(18	)	$	309	$	1,553	$	126		$	597	$	935		$	298

Basic income (loss) per LP unit:
Continuing operations	$	0.58	$	(0.34	)	$	0.86	$	9.04	$	(0.20	)	$	3.37	$	(2.28	)	$	1.61
Discontinued operations	0.19		0.22			0.84		0.47		0.88			0.16		10.31			0.11
	$	0.77	$	(0.12	)	$	1.70	$	9.51	$	0.68		$	3.53	$	8.03		$	1.72
Diluted income (loss) per LP unit:
Continuing operations	$	0.58	$	(0.34	)	$	0.86	$	9.04	$	(0.20	)	$	3.37	$	(2.28	)	$	1.61
Discontinued operations	0.19		0.22			0.84		0.47		0.88			0.16		10.31			0.11
	$	0.77	$	(0.12	)	$	1.70	$	9.51	$	0.68		$	3.53	$	8.03		$	1.72

Schedule I (Tables)

12 Months Ended

Dec. 31, 2018

Icahn Enterprises (Parent)

Condensed Financial Statements, Captions [Line Items]

Financial Statement Schedule, Parent Company Balance Sheet [Table Text Block]

SCHEDULE I

ICAHN ENTERPRISES, L.P.

(Parent Company)

CONDENSED BALANCE SHEETS



	December 31,
	2018			2017
	(In millions, except unit amounts)
ASSETS
Investments in subsidiaries, net	$	12,158		$	10,737
Total Assets	$	12,158		$	10,737

LIABILITIES AND EQUITY
Accrued expenses and other liabilities	$	124		$	124
Debt	5,505			5,507
	5,629			5,631

Commitments and contingencies (Note 3)

Equity:
Limited partners: Depositary units: 191,366,097 and 173,564,307 units issued and outstanding at December 31, 2018 and 2017, respectively	7,319			5,341
General partner	(790		)	(235		)
Total equity	6,529			5,106
Total Liabilities and Equity	$	12,158		$	10,737

Financial Statement Schedule, Parent Company Statement of Operations [Table Text Block]

SCHEDULE I

ICAHN ENTERPRISES, L.P.

(Parent Company)

CONDENSED STATEMENTS OF OPERATIONS



	Year Ended December 31,
	2018			2017			2016
	(In millions)
Interest expense	$	(337	)	$	(323	)	$	(289	)
Loss on extinguishment of debt	—			(12		)	—
Equity in earnings (loss) of subsidiaries	1,844			2,765			(839		)
Net income (loss)	$	1,507		$	2,430		$	(1,128	)
Net income (loss) allocated to:
Limited partners	$	2,063		$	2,382		$	(1,106	)
General partner	(556		)	48			(22		)
	$	1,507		$	2,430		$	(1,128	)

Financial Statement Schedule, Parent Company Statement of Cash Flows [Table Text Block]

SCHEDULE I

ICAHN ENTERPRISES, L.P.

(Parent Company)

CONDENSED STATEMENTS OF CASH FLOWS



	Year Ended December 31,
	2018			2017			2016
	(In millions)
Cash flows from operating activities:
Net income (loss)	$	1,507		$	2,430		$	(1,128	)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Amortization of deferred financing costs	1			1			1
Loss on extinguishment of debt	—			2			—
Equity in (income) loss of subsidiary	(1,844		)	(2,765		)	839
Net cash used in operating activities	(336		)	(332		)	(288		)
Cash flows from investing activities:
Net investment in and advances from subsidiary	433			(204		)	390
Net cash provided by (used in) investing activities	433			(204		)	390
Cash flows from financing activities:
Partnership distributions	(97		)	(81		)	(103		)
Partnership contributions	—			606			1
Proceeds from borrowings	—			2,470			—
Repayments of borrowings	—			(2,450		)	—
Debt issuance costs	—			(9		)	—
Net cash (used in) provided by financing activities	(97		)	536			(102		)
Net change in cash and cash equivalents and restricted cash and restricted cash equivalents	—			—			—
Cash and cash equivalents and restricted cash and restricted cash equivalents, beginning of period	—			—			—
Cash and cash equivalents and restricted cash and restricted cash equivalents, end of period	$	—		$	—		$	—

Financial Statement Schedule, Parent Company Debt Note [Table Text Block]



	December 31,
	2018		2017
	(in millions)
6.000% senior unsecured notes due 2020	$	1,702	$	1,703
5.875% senior unsecured notes due 2022	1,344		1,342
6.250% senior unsecured notes due 2022	1,213		1,216
6.750% senior unsecured notes due 2024	498		498
6.375% senior unsecured notes due 2025	748		748
Total debt	$	5,505	$	5,507

Icahn Enterprises Holdings (Parent)

Condensed Financial Statements, Captions [Line Items]

Financial Statement Schedule, Parent Company Balance Sheet [Table Text Block]

SCHEDULE I

ICAHN ENTERPRISES HOLDINGS L.P.

(Parent Company)

CONDENSED BALANCE SHEETS



	December 31,
	2018			2017
	(in millions)
ASSETS
Cash and cash equivalents	$	30		$	241
Restricted cash	29			—
Investments	723			1
Other assets	60			84
Investments in subsidiaries, net	11,355			10,467
Total Assets	$	12,197		$	10,793
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	$	131		$	128
Debt	5,509			5,532
	5,640			5,660

Commitments and contingencies (Note 3)

Equity:
Limited partner	7,421			5,420
General partner	(864		)	(287		)
Total equity	6,557			5,133
Total Liabilities and Equity	$	12,197		$	10,793

Financial Statement Schedule, Parent Company Statement of Operations [Table Text Block]

SCHEDULE I

ICAHN ENTERPRISES HOLDINGS L.P.

(Parent Company)

CONDENSED STATEMENTS OF OPERATIONS



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Interest and dividend income	$	7		$	2		$	1
Net (loss) gain from investment activities	(389		)	—			1
Gain (loss) on disposition of assets	23			(1		)	—
Equity in earnings (loss) of subsidiaries	2,225			2,739			(818		)
Other income, net	4			41			7
	1,870			2,781			(809		)
Interest expense	337			324			290
Selling, general and administrative	25			25			28
	362			349			318
Net income (loss)	$	1,508		$	2,432		$	(1,127	)
Net income (loss) allocated to:
Limited partner	$	2,085		$	2,408		$	(1,116	)
General partner	(577		)	24			(11		)
	$	1,508		$	2,432		$	(1,127	)

Financial Statement Schedule, Parent Company Statement of Cash Flows [Table Text Block]

SCHEDULE I

ICAHN ENTERPRISES HOLDINGS L.P.

(Parent Company)

CONDENSED STATEMENTS OF CASH FLOWS



	Year Ended December 31,
	2018			2017			2016
	(in millions)
Cash flows from operating activities:
Net income (loss)	$	1,508		$	2,432		$	(1,127	)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Equity in (income) loss of subsidiary	(2,225		)	(2,739		)	818
(Gain) loss on disposition of assets	(23		)	1			—
Investment gains	389			—			(1		)
Depreciation and amortization	2			3			3
Other, net	(2		)	(39		)	8
Change in operating assets and liabilities	8			18			(6		)
Net cash used in operating activities	(343		)	(324		)	(305		)
Cash flows from investing activities:
Net investment in subsidiaries	238			509			421
Other, net	41			53			—
Net cash provided by investing activities	279			562			421
Cash flows from financing activities:
Partnership distributions	(97		)	(81		)	(103		)
Partner contributions	—			6			1
Proceeds from borrowings	—			2,470			—
Repayments of borrowings	(21		)	(2,450		)	—
Debt issuance costs	—			(7		)	—
Net cash used in financing activities	(118		)	(62		)	(102		)
Net change in cash and cash equivalents and restricted cash and restricted cash equivalents	(182		)	176			14
Cash and cash equivalents and restricted cash and restricted cash equivalents, beginning of period	241			65			51
Cash and cash equivalents and restricted cash and restricted cash equivalents, end of period	$	59		$	241		$	65

Financial Statement Schedule, Parent Company Debt Note [Table Text Block]



	December 31,
	2018		2017
	(in millions)
6.000% senior unsecured notes due 2020	$	1,703	$	1,704
5.875% senior unsecured notes due 2022	1,344		1,343
6.250% senior unsecured notes due 2022	1,214		1,217
6.750% senior unsecured notes due 2024	499		499
6.375% senior unsecured notes due 2025	749		749
Mortgages payable	—		20
Total debt	$	5,509	$	5,532

(Details) - USD ($) $ in Millions							1 Months Ended				3 Months Ended	12 Months Ended
(Details) - USD ($) $ in Millions	Jan. 29, 2019	Dec. 05, 2018	Oct. 01, 2018	Aug. 01, 2018	Apr. 01, 2016	Feb. 04, 2016	Aug. 31, 2018	Jan. 31, 2018	Aug. 31, 2017	Jan. 31, 2017	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Description of Business [Line Items]
Affiliate ownership interest												98.01%
Purchase of additional interests in consolidated subsidiaries												$ 5	$ 349	$ 2
Gain on disposition of assets, net												84	2,163	6
Proceeds from disposition of businesses and assets												3,370	1,983	31
Seller financing secured mortgages resulting from disposition of assets												0	375	0
Energy Segment
Description of Business [Line Items]
Gain on disposition of assets, net												(6)	(3)	0
Automotive Segment
Description of Business [Line Items]
Gain on disposition of assets, net												(1)	5	1
Food Packaging Segment
Description of Business [Line Items]
Gain on disposition of assets, net												0	0	0
Real Estate Segment
Description of Business [Line Items]
Gain on disposition of assets, net							$ 89		$ 456			89	496	1
Proceeds from disposition of businesses and assets							$ 179		225
Seller financing secured mortgages resulting from disposition of assets									375
Total consideration received from sale of asset									600
Real Estate Segment \| First Mortgage
Description of Business [Line Items]
Seller financing secured mortgages resulting from disposition of assets									345
Real Estate Segment \| Second Mortgage
Description of Business [Line Items]
Seller financing secured mortgages resulting from disposition of assets									$ 30
Railcar Segment
Description of Business [Line Items]
Gain on disposition of assets, net												$ 5	1,664	3
Icahn Enterprises Holdings
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												99.00%
Purchase of additional interests in consolidated subsidiaries												$ 5	349	2
Gain on disposition of assets, net												84	2,163	6
Proceeds from disposition of businesses and assets												3,370	1,983	$ 31
Investment Funds
Description of Business [Line Items]
Fair value of investment in subsidiary											$ 5,100	$ 5,100	3,000
CVR Refining
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												3.90%
Common units validly tendered and not properly withdrawn				21,625,106
CVR Refining \| Energy Segment
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												80.60%
CVR Nitrogen \| Energy Segment
Description of Business [Line Items]
Fair value of subsidiary common units issued in a business combination					$ 335
Payments to acquire businesses					99
Fair value of debt assumed in business combination					$ 368
CVR Partners \| Energy Segment
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												34.40%
CVR Energy
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												70.80%
Equity issued to acquire additional interest in consolidated subsidiary (number of units)				13,699,549
Change in equity as a result of acquisition of additional interest in consolidated subsidiary				$ 99
ADS and Precision Tune \| Automotive Segment
Description of Business [Line Items]
Payments to acquire businesses													$ 162
Pep Boys \| Automotive Segment
Description of Business [Line Items]
Total consideration for acquisition of business						$ 1,200
Viskase \| Food Packaging Segment
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												78.60%	74.60%
Proceeds from rights offering								$ 50
Contribution to subsidiary								$ 44
ARL \| Railcar Segment
Description of Business [Line Items]
Gain on disposition of assets, net												$ 5	$ 1,700
Proceeds from disposition of businesses and assets												$ 17
aggregate consideration for business disposed of													$ 1,800
Ferrous Resources
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												77.20%
Aggregate consideration for business to be disposed of		$ 550
Federal-Mogul
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												100.00%		82.00%
Purchase of additional interests in consolidated subsidiaries										$ 305
Contribution to subsidiary												$ 56
Gain on disposition of assets, net											251
Proceeds from disposition of businesses and assets			$ 800
consideration in shares for business disposed of			29,500,000
consideration in non-voting shares for business disposed of			23,800,000
consideration in voting shares for business disposed of			5,700,000
investment, ownership percentage			9.90%
fair market value of shares obtained as consideration for business disposed of			$ 1,200
Tropicana
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary												83.90%	72.50%
Purchase of additional interests in consolidated subsidiaries												$ 95
Gain on disposition of assets, net											779
Proceeds from disposition of businesses and assets			1,500
aggregate consideration for business disposed of			$ 1,800
Subsidiary repurchase of treasury stock												$ 36
ARI
Description of Business [Line Items]
Gain on disposition of assets, net											$ 400
Proceeds from disposition of businesses and assets		$ 831
Mr. Icahn and affiliates
Description of Business [Line Items]
Affiliate ownership interest												91.70%
Icahn Enterprises G.P.
Description of Business [Line Items]
General partner ownership percentage in Icahn Enterprises												1.00%
Aggregate general partner ownership interest of parent and operating subsidiary												1.99%
Icahn Enterprises G.P. \| Icahn Enterprises Holdings
Description of Business [Line Items]
General partner ownership percentage in Icahn Enterprises												1.00%
Subsequent event \| CVR Refining \| Energy Segment
Description of Business [Line Items]
Purchase of additional interests in consolidated subsidiaries	$ 241

Basis of Presentation and Summary of Significant Accounting Policies Variable Interest Entities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Icahn Enterprises Holdings
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Percentage of equity ownership in operating subsidiary	99.00%
Icahn Enterprises Holdings \| Cash and cash equivalents
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	$ 415	$ 223
Icahn Enterprises Holdings \| Cash held at consolidated affiliated partnerships and restricted cash
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	2,648	734
Icahn Enterprises Holdings \| Investments
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	6,951	9,615
Icahn Enterprises Holdings \| Due from brokers
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	664	506
Icahn Enterprises Holdings \| Property, plant and equipment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	3,027	3,185
Icahn Enterprises Holdings \| Inventories
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	380	369
Icahn Enterprises Holdings \| Intangible assets, net
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	278	298
Icahn Enterprises Holdings \| Other assets
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets of VIE's	863	267
Icahn Enterprises Holdings \| Accounts payable, accrued expenses and other liabilities
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Liabilities of VIE's	516	1,815
Icahn Enterprises Holdings \| Securities Sold, Not yet Purchased
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Liabilities of VIE's	468	1,023
Icahn Enterprises Holdings \| Due to brokers
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Liabilities of VIE's	141	1,057
Icahn Enterprises Holdings \| Debt
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Liabilities of VIE's	$ 1,170	$ 1,166
Viskase
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Subsidiary ownership interest in variable interest entity	50.00%

Basis of Presentation and Summary of Significant Accounting Policies Narrative (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019	Jan. 01, 2018
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Debt	$ 7,326				$ 7,372				$ 7,326	$ 7,372
Fair value of long-term debt	7,300				7,600				$ 7,300	7,600
Affiliate ownership interest									98.01%
Cash held at consolidated affiliated partnerships and restricted cash	2,682				747				$ 2,682	747
Portion of inventory under LIFO method	846				900				846	900
Post-retirement benefit liability	77				80				77	80
Accumulated other comprehensive loss	(84)				(1,384)				(84)	(1,384)
Cumulative effect adjustment from adoption of accounting principal									(29)	(47)
Accounts receivable, net	474				473				474	473
Accrued expenses and other liabilities	900				984				900	984
Deferred tax liability	676				732				676	732
Net sales	2,578	$ 2,815	$ 2,820	$ 2,363	2,385	$ 2,334	$ 2,277	$ 2,310	10,576	9,306	$ 7,740
Cost of goods sold									8,947	8,258	6,837
Assets	23,396				31,801				23,396	31,801
Liabilities	10,491				20,433				10,491	20,433
Cash held at consolidated affiliated partnerships [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Cash held at consolidated affiliated partnerships and restricted cash	2,648				192				2,648	192
Restricted cash
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Cash held at consolidated affiliated partnerships and restricted cash	34				555				34	555
Automotive Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Debt	372				340				372	340
Cash held at consolidated affiliated partnerships and restricted cash	0				0				0	0
Deferred revenue	42								42				$ 42
Revenue recognition during period of previously deferred revenue									22
Deferred revenue expected to be earned within one year	22								22
Accounts receivable, net	149				128				149	128
Net sales									2,295	2,225	2,079
Cost of goods sold									1,502	1,540	1,430
Assets	3,024				3,011				3,024	3,011
Liabilities	1,277				1,284				1,277	1,284
Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Debt	1,170				1,166				1,170	1,166
Cash held at consolidated affiliated partnerships and restricted cash	0				0				0	0
Planned major maintenance									10	83	38
Remaining performance obligation for contracts with an original expected duration of more than one year	11								11
Remaining performance obligation expected to be recognized as revenue within one year	5								5
Deferred revenue	69								69				34
Revenue recognition during period of previously deferred revenue									34
Accounts receivable, net	169				179				169	179
Net sales									7,124	5,988	4,782
Cost of goods sold									6,453	5,799	4,637
Assets	4,738				4,700				4,738	4,700
Liabilities	2,195				2,291				2,195	2,291
Net cash provided by operating activities
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Prior Period Reclassification Adjustment										(19)	(446)
Difference between Revenue Guidance in Effect before and after Topic 606
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Assets													32
Difference between Revenue Guidance in Effect before and after Topic 606 \| Automotive Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Accounts receivable, net													21
Net sales									62
Cost of goods sold									$ 62
Liabilities													(29)
Selling, general and administrative
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Prior Period Reclassification Adjustment										(4)	(4)
Other Income, net
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Prior Period Reclassification Adjustment										(4)	(4)
Icahn Enterprises Holdings
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Percentage of equity ownership in operating subsidiary									99.00%
Debt	7,330				7,377				$ 7,330	7,377
Cash held at consolidated affiliated partnerships and restricted cash	2,682				747				2,682	747
Cumulative effect adjustment from adoption of accounting principal									(29)	(47)
Accounts receivable, net	474				473				474	473
Accrued expenses and other liabilities	900				984				900	984
Deferred tax liability	676				732				676	732
Net sales									10,576	9,306	7,740
Cost of goods sold									8,947	8,258	$ 6,837
Assets	23,428				31,833				23,428	31,833
Liabilities	$ 10,495				$ 20,438				$ 10,495	$ 20,438
CVR Energy
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Percentage of equity ownership in operating subsidiary									70.80%
Extended warranties \| Difference between Revenue Guidance in Effect before and after Topic 606 \| Automotive Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Accrued expenses and other liabilities													(42)
Deferred tax liability													$ 10
Subsequent event \| Automotive Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Operating lease right-of-use asset												$ 639
Operating lease liability												674
Subsequent event \| Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Operating lease right-of-use asset												53
Operating lease liability												53
Finance lease right-of-use asset												$ 26
Minimum \| Nitrogenous fertilizer manufacturing \| Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Planned major maintenance, frequency (in years)									2 years
Minimum \| Petroleum refineries \| Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Planned major maintenance, frequency (in years)									4 years
Minimum \| CVR Energy
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Performance obligation payment terms									2 days
Maximum \| Nitrogenous fertilizer manufacturing \| Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Planned major maintenance, frequency (in years)									3 years
Maximum \| Petroleum refineries \| Energy Segment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Planned major maintenance, frequency (in years)									5 years
Maximum \| CVR Energy
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Performance obligation payment terms									30 days
Icahn Enterprises G.P.
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Aggregate general partner ownership interest of parent and operating subsidiary									1.99%
General partner ownership percentage in Icahn Enterprises									1.00%
Icahn Enterprises G.P. \| Icahn Enterprises Holdings
Organization, Consolidation and Presentation of Financial Statements [Line Items]
General partner ownership percentage in Icahn Enterprises									1.00%

Related Party Transactions (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 29, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Investments in subsidiaries prior to acquiring a controlling interest		$ 0	$ 0	$ 286
Mr. Icahn and affiliates
Related Party Transaction [Line Items]
Equity issued to acquire additional interest in consolidated subsidiary (number of units)	685,367
Investments in subsidiaries prior to acquiring a controlling interest	$ 35
Percentage of equity ownership in subsidiary			100.00%
Investment in funds \| Mr. Icahn and affiliates
Related Party Transaction [Line Items]
Amount of transaction with related party		310	$ 600	498
Related party transaction, balance		$ 5,000	$ 4,400
Percentage fair value of investments in Funds that is attributable to Mr. Icahn		50.00%	59.00%
Expense sharing arrangement \| Consolidated VIE
Related Party Transaction [Line Items]
Amount of transaction with related party		$ 12	$ 13	34
Repair services revenue from related party \| Hertz
Related Party Transaction [Line Items]
Amount of transaction with related party		40	17	3
Purchases from related party \| Hertz
Related Party Transaction [Line Items]
Amount of transaction with related party		1	2	2
Purchases from related party \| ACF
Related Party Transaction [Line Items]
Amount of transaction with related party		3	6	21
Sales to related party \| ACF
Related Party Transaction [Line Items]
Amount of transaction with related party		6	1	1
Buying group operating expenses \| Insight Portfolio Group LLC
Related Party Transaction [Line Items]
Amount of transaction with related party		4	$ 2	$ 2
Investment \| Purchases from related party \| Hertz
Related Party Transaction [Line Items]
Amount of transaction with related party		36
Automotive Segment \| 767 Leasing
Related Party Transaction [Line Items]
Variable Interest Entity, Nonconsolidated, assets at VIE		60
Variable Interest Entity, Nonconsolidated, liabilities at VIE		1
investment in nonconsolidated VIE		60
investment in related parties		$ 59

Investments and Related Matters Investment Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Investments [Line Items]
Investments	$ 8,337	$ 10,015
Securities sold, not yet purchased, at fair value	468	1,023
Investment Segment
Schedule of Investments [Line Items]
Investments	6,867	9,532
Securities sold, not yet purchased, at fair value	468	1,023
Portion of unrealized (losses) gains that relates to equity and debt securities still held	(800)	1,413	$ 340
Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	6,686	9,377
Securities sold, not yet purchased, at fair value	468	988
Investment Segment \| Debt securities
Schedule of Investments [Line Items]
Investments	181	155
Basic materials \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	414	1,170
Consumer, non-cyclical \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	2,161	2,551
Securities sold, not yet purchased, at fair value	57	101
Consumer, cyclical \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	1,161	777
Securities sold, not yet purchased, at fair value	106	667
Consumer, cyclical \| Investment Segment \| Debt securities
Schedule of Investments [Line Items]
Securities sold, not yet purchased, at fair value	0	35
Energy \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	1,598	1,489
Securities sold, not yet purchased, at fair value	305	110
Financial \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	167	2,185
Industrial \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Securities sold, not yet purchased, at fair value	0	110
Technology \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	1,040	833
Other sectors \| Investment Segment \| Equity securities
Schedule of Investments [Line Items]
Investments	$ 145	372
Herbalife \| Investment Segment
Schedule of Investments [Line Items]
Ownership percentage in equity method investment	18.10%
Unrealized gain on equity method investments under fair value option	$ 864	357	(113)
Fair value of equity method investment under fair value option	$ 1,700	1,200
Hertz \| Investment Segment
Schedule of Investments [Line Items]
Ownership percentage in equity method investment	27.90%
Unrealized gain on equity method investments under fair value option	$ (197)	13	$ (389)
Fair value of equity method investment under fair value option	$ 320	$ 517

Investments and Related Matters Other Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Investments [Line Items]
Investments	$ 8,337	$ 10,015
Other Segments and Holding Company
Schedule of Investments [Line Items]
Investments	1,470	483
Portion of unrealized (losses) gains that relates to equity securities still held	(339)	67	$ 0
Equity method investments \| Other Segments and Holding Company
Schedule of Investments [Line Items]
Investments	143	83
Other investments \| Other Segments and Holding Company
Schedule of Investments [Line Items]
Investments	$ 1,327	$ 400

Fair Value Measurements Fair Value Measurement (Details) - USD ($)
$ in Millions

Dec. 31, 2018

Dec. 31, 2017

Liabilities

Securities sold, not yet purchased, at fair value

$ 468

$ 1,023

Derivative contracts, at fair value (Note 6)

1,275

Recurring measurement

Assets

Investments

8,182

9,920

Derivative contracts, at fair value(1)

^[1]

524

Assets, Fair Value Disclosure

8,706

9,920

Liabilities

Securities sold, not yet purchased, at fair value

468

1,023

Other liabilities

Derivative contracts, at fair value (Note 6)

1,275

Financial and Nonfinancial Liabilities, Fair Value Disclosure

506

2,299

Recurring measurement | Level 1

Assets

Investments

7,493

9,378

Derivative contracts, at fair value(1)

^[1]

Assets, Fair Value Disclosure

7,500

9,378

Liabilities

Securities sold, not yet purchased, at fair value

468

988

Other liabilities

Derivative contracts, at fair value (Note 6)

Financial and Nonfinancial Liabilities, Fair Value Disclosure

468

1,024

Recurring measurement | Level 2

Assets

Investments

317

264

Derivative contracts, at fair value(1)

^[1]

517

Assets, Fair Value Disclosure

834

264

Liabilities

Securities sold, not yet purchased, at fair value

Other liabilities

Derivative contracts, at fair value (Note 6)

1,239

Financial and Nonfinancial Liabilities, Fair Value Disclosure

1,275

Recurring measurement | Level 3

Assets

Investments

372

278

Derivative contracts, at fair value(1)

^[1]

Assets, Fair Value Disclosure

372

278

Liabilities

Securities sold, not yet purchased, at fair value

Other liabilities

Derivative contracts, at fair value (Note 6)

Financial and Nonfinancial Liabilities, Fair Value Disclosure

$ 0

[1]	Amounts are classified within other assets in our consolidated balance sheets.

Fair Value Measurements Changes in Fair Value Level 3 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 5	$ 10	$ 9
Inventory Write-down		8
Impairment of Long-Lived Assets to be Disposed of		68
Level 3 \| Recurring measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of asset measured on a recurring basis	372	278	$ 211
Fair value, measurement with unobservable inputs reconciliation, recurring basis, assets, unrealized gain (loss)	95	67
Fair value, measurement with unobservable inputs reconciliation, recurring basis, assets, other	(1)	0
Equity securities \| Recurring measurement \| Holding Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of asset measured on a recurring basis	$ 369	$ 274

Fair Value Measurements Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 5	$ 10	$ 9
Inventory Write-down		8
Impairment of Long-Lived Assets to be Disposed of		68
Equity securities \| Holding Company \| Recurring measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of asset measured on a recurring basis	$ 369	$ 274

Financial Instruments Narrative (Details) bbl in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) bbl	Dec. 31, 2017 USD ($) bbl
Derivatives, Fair Value [Line Items]
Debt designated as net investment in foreign operations		$ 884
Loss recognized in AOCI	$ 29	85
Investment Segment
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments with credit risk related contingent features in a liability position	$ 0	$ 17
Commodity contracts \| Energy Segment \| Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Derivative volume (barrels) \| bbl		15
Commodity contracts not considered probable of settlement \| Energy Segment \| Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Derivative volume (barrels) \| bbl	2	6

Financial Instruments Derivatives Not Designated as Hedging, Fair Value Table (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Derivative contracts, at fair value (Note 6)

$ 36

$ 1,275

Not designated as hedging instrument | Other assets

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Asset derivatives, Gross

^[1]

659

Derivative, Fair Value, Amount Offset Against Collateral, Net

^[1],[2]

(135)

(7)

Derivative contracts, at fair value(1)

^[1],[2]

524

Not designated as hedging instrument | Accrued expenses and other liabilities

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Liability derivatives, Gross

171

1,282

Derivative, Fair Value, Amount Offset Against Collateral, Net

^[2]

(135)

(7)

Derivative contracts, at fair value (Note 6)

^[2]

1,275

Not designated as hedging instrument | Equity contracts | Other assets

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Asset derivatives, Gross

^[1]

568

Not designated as hedging instrument | Equity contracts | Accrued expenses and other liabilities

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Liability derivatives, Gross

170

1,159

Not designated as hedging instrument | Credit contracts | Other assets

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Asset derivatives, Gross

^[1]

Not designated as hedging instrument | Credit contracts | Accrued expenses and other liabilities

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Liability derivatives, Gross

Not designated as hedging instrument | Commodity contracts | Other assets

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Asset derivatives, Gross

^[1]

Not designated as hedging instrument | Commodity contracts | Accrued expenses and other liabilities

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Liability derivatives, Gross

106

Investment Segment

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Collateral posted on certain derivative positions

542

Investment Segment | Credit Default Swap [Member]

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Derivative, Notional Amount

1,800

2,500

Investment Segment | Equity contracts

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Notional Exposure of Derivatives, Long Position

118

243

Short Notional Exposure

8,368

6,660

Investment Segment | Credit contracts

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Notional Exposure of Derivatives, Long Position

^[3]

Short Notional Exposure

^[3]

479

391

Investment Segment | Commodity contracts

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Notional Exposure of Derivatives, Long Position

Short Notional Exposure

114

634

Other Operating Income (Expense) [Member] | Energy Segment | Not designated as hedging instrument

Derivatives Not Designated as Hedging Instruments, Fair Value [Line Items]

Derivative gain (loss) recognized in income

$ 146

$ (70)

$ (19)

[1]	Net asset derivatives are located within other assets in our consolidated balance sheets.
[2]	Excludes netting of cash collateral received and posted. The total collateral posted at December 31, 2018 and 2017 was $0 million and $542 million, respectively, across all counterparties, which are included in cash held at consolidated affiliated partnerships and restricted cash in our consolidated balance sheets.
[3]	The short notional amount on our credit default swap positions was approximately $1.8 billion as of December 31, 2018. However, because credit spreads cannot compress below zero, our downside short notional exposure is $479 million as of December 31, 2018. The short notional amount on our credit default swap positions was approximately $2.5 billion as of December 31, 2017. However, because credit spreads cannot compress below zero, our downside short notional exposure to loss is $391 million as of December 31, 2017.

Financial Instruments Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) - Not designated as hedging instrument - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Net gain (loss) from investment activities

Derivative [Line Items]

Derivative gain (loss) recognized in income

^[1]

$ 944

$ (2,039)

$ (1,659)

Equity contracts | Net gain (loss) from investment activities

Derivative [Line Items]

Derivative gain (loss) recognized in income

^[1]

603

(1,815)

(1,609)

Foreign exchange contracts | Net gain (loss) from investment activities

Derivative [Line Items]

Derivative gain (loss) recognized in income

^[1]

Credit contracts | Net gain (loss) from investment activities

Derivative [Line Items]

Derivative gain (loss) recognized in income

^[1]

129

(42)

Interest Rate Contract [Member] | Net gain (loss) from investment activities

Derivative [Line Items]

Derivative gain (loss) recognized in income

^[1]

(28)

Commodity contracts | Net gain (loss) from investment activities

Derivative [Line Items]

Derivative gain (loss) recognized in income

^[1]

212

(182)

(101)

Investment Segment | Net gain (loss) from investment activities

Derivative [Line Items]

Derivative gain (loss) recognized in income

798

(1,969)

(1,640)

Energy Segment | Other Operating Income (Expense) [Member]

Derivative [Line Items]

Derivative gain (loss) recognized in income

$ 146

$ (70)

$ (19)

[1]

Financial Instruments Derivative Activities Table (Details) - Investment Segment - USD ($)
$ in Millions

Dec. 31, 2018

Dec. 31, 2017

Equity contracts

Primary underlying risk:

Notional Exposure of Derivatives, Long Position

$ 118

$ 243

Short Notional Exposure

8,368

6,660

Credit contracts

Primary underlying risk:

Notional Exposure of Derivatives, Long Position

^[1]

Short Notional Exposure

^[1]

479

391

Commodity contracts

Primary underlying risk:

Notional Exposure of Derivatives, Long Position

Short Notional Exposure

114

634

Credit Default Swap [Member]

Primary underlying risk:

Derivative, Notional Amount

$ 1,800

$ 2,500

[1]

Inventories, Net (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 217	$ 199
Work in process	70	107
Finished goods	1,492	1,424
Inventories, net	1,779	1,730
Inventories reserves	$ 39	$ 73

Goodwill and Intangible Assets, Net Goodwill Table (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018	Jan. 01, 2017
Goodwill [Line Items]
Gross carrying amount of goodwill	$ 334	$ 327	$ 327	$ 324
Goodwill arising from acquisitions	8	3
Foreign exchange adjustments to goodwill	(1)	0
Accumulated impairment of goodwill	(87)	0	0	0
Impairment of goodwill	(87)	0
Net carrying value of goodwill	247	327
Automotive Segment
Goodwill [Line Items]
Gross carrying amount of goodwill	328	320	320	320
Goodwill arising from acquisitions	8	0
Foreign exchange adjustments to goodwill	0	0
Accumulated impairment of goodwill	(87)	0	0	0
Impairment of goodwill	(87)	0
Net carrying value of goodwill	241	320
Food Packaging Segment
Goodwill [Line Items]
Gross carrying amount of goodwill	6	7	7	4
Goodwill arising from acquisitions	0	3
Foreign exchange adjustments to goodwill	(1)	0
Accumulated impairment of goodwill	0	0	$ 0	$ 0
Impairment of goodwill	0	0
Net carrying value of goodwill	$ 6	$ 7

Goodwill and Intangible Assets, Net Definite-lived and Indefinite-lived Intangible Assets Table (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Definite-lived intangible assets:
Gross Carrying Amount	$ 712	$ 731
Accumulated Amortization	(273)	(249)
Net Carrying Value	439	482
Indefinite-lived intangible assets	62	62
Intangible assets, net	501	544
Customer relationships
Definite-lived intangible assets:
Gross Carrying Amount	396	397
Accumulated Amortization	(134)	(115)
Net Carrying Value	262	282
Other
Definite-lived intangible assets:
Gross Carrying Amount	316	334
Accumulated Amortization	(139)	(134)
Net Carrying Value	$ 177	$ 200

Goodwill and Intangible Assets, Net Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets [Line Items]
Business combination, allocation to goodwill		$ 8	$ 3
Amortization expense associated with definite-lived intangible assets		47	41	$ 32
2019	$ 45	45
2020	44	44
2021	37	37
2022	36	36
2023	34	34
Thereafter	243	243
Total estimated future amortization expense for definite-lived intangible assets	439	439
Impairment of goodwill		87	0
Goodwill	247	247	327
Automotive Segment
Goodwill and Intangible Assets [Line Items]
Business combination, allocation to goodwill		8	0
Business combination, definite-lived intangible assets acquired		2
Impairment of goodwill		87	0
Goodwill	$ 241	$ 241	320
Energy Segment
Goodwill and Intangible Assets [Line Items]
Impairment of goodwill				574
Fair Value, Measurements, Nonrecurring [Member]
Goodwill and Intangible Assets [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			$ 1	$ 3
Automotive parts [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill, Change in Goodwill Allocation, Description	27.00%

Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,001	$ 7,138
Less: Accumulated depreciation and amortization	(2,298)	(1,952)
Property, plant and equipment, net	4,703	5,186
2019	33
2020	33
2021 and thereafter	10
Depreciation and amortization expense related to property, plant and equipment	398	430	$ 487
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	416	508
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,772	1,715
Buildings and improvements \| Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	3 years
Buildings and improvements \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	40 years
Machinery, equipment and furniture
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,313	4,326
Machinery, equipment and furniture \| Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	1 year
Machinery, equipment and furniture \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	30 years
Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 279	388
Assets leased to others \| Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	5 years
Assets leased to others \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	39 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 221	$ 201

Debt Debt Table (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt	$ 7,326	$ 7,372
Holding Company
Debt Instrument [Line Items]
Debt	5,505	5,507
Holding Company \| 6.000% senior unsecured notes due 2020
Debt Instrument [Line Items]
Debt	1,702	1,703
Holding Company \| 5.875% senior unsecured notes due 2022
Debt Instrument [Line Items]
Debt	1,344	1,342
Holding Company \| 6.250% senior unsecured notes due 2022
Debt Instrument [Line Items]
Debt	1,213	1,216
Holding Company \| 6.750% senior unsecured notes due 2024
Debt Instrument [Line Items]
Debt	498	498
Holding Company \| 6.375% senior unsecured notes due 2025
Debt Instrument [Line Items]
Debt	748	748
Energy Segment
Debt Instrument [Line Items]
Debt	1,170	1,166
Automotive Segment
Debt Instrument [Line Items]
Debt	372	340
Food Packaging Segment
Debt Instrument [Line Items]
Debt	273	273
Metals Segment
Debt Instrument [Line Items]
Debt	0	1
Real Estate Segment
Debt Instrument [Line Items]
Debt	2	22
Home Fashion Segment
Debt Instrument [Line Items]
Debt	4	5
Mining Segment
Debt Instrument [Line Items]
Debt	0	58
Reporting Segments
Debt Instrument [Line Items]
Debt	$ 1,821	$ 1,865

Debt Narrative - Holding Company Debt (Details) - Holding Company - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 06, 2017	Jan. 18, 2017
Debt Instrument [Line Items]
(Gain) loss on extinguishment of debt		$ 12
Additional borrowing availability	$ 2,000
6.750% senior unsecured notes due 2024
Debt Instrument [Line Items]
Debt face amount				$ 500
Interest rate on debt instrument				6.75%
6.250% senior unsecured notes due 2022
Debt Instrument [Line Items]
Debt face amount			$ 510	$ 695
Interest rate on debt instrument			6.25%	6.25%
6.375% senior unsecured notes due 2025
Debt Instrument [Line Items]
Debt face amount			$ 750
Interest rate on debt instrument			6.375%

Debt Narrative - Reporting Segment Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Amortization of deferred financing costs and debt discounts and premiums	$ 5	$ 10	$ 14
Energy Segment \| CVR 2022 Notes
Debt Instrument [Line Items]
Debt face amount	$ 500
Interest rate on debt instrument	6.50%
Energy Segment \| CVR Partners 2023 Notes
Debt Instrument [Line Items]
Debt face amount	$ 645
Interest rate on debt instrument	9.25%
Energy Segment \| Revolving credit facility
Debt Instrument [Line Items]
Borrowing availability on credit facilities	$ 444	382
Energy Segment \| CVR Refining credit facility
Debt Instrument [Line Items]
Letters of credit outstanding	6	28
Automotive Segment \| IEP Auto Credit Facility
Debt Instrument [Line Items]
Debt face amount	370	337
Borrowing availability on credit facilities	90	75
Letters of credit outstanding	$ 40	$ 33
Weighted average interest rate on debt	4.37%	3.58%
Food Packaging Segment \| Viskase credit facility
Debt Instrument [Line Items]
Interest rate on debt instrument	6.05%	4.88%

Debt Debt Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
2019	$ 27
2020	1,718
2021	620
2022	3,059
2023	648
Thereafter	1,280
Future maturiites due on debt	7,352
Unamortized discounts, premiums and deferred financing fees	(26)
Total Debt	$ 7,326	$ 7,372

Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended								12 Months Ended
	Jan. 31, 2017	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per LP Unit [Line Items]
Net (loss) income attributable to Icahn Enterprises from continuing operations										$ (213)	$ 2,273	$ (1,127)
Net income (loss) attributable to Icahn Enterprises from discontinued operations										1,720	157	(1)
Less: net loss attributable to Icahn Enterprises from discontinued operations allocated 100% to general partner										598	0	0
Net income (loss) attributable to Icahn Enterprises from discontinued operations allocable to limited partners										$ 2,318	$ 157	$ (1)
Basic income (loss) per LP unit:
Continuing operations		$ (2.28)	$ (0.20)	$ 0.86	$ 0.58	$ 1.61	$ 3.37	$ 9.04	$ (0.34)	$ (1.16)	$ 13.84	$ (8.07)
Discontinued operations		10.31	0.88	0.84	0.19	0.11	0.16	0.47	0.22	12.62	0.96	0.00
Basic income (loss) per LP unit		8.03	0.68	1.70	0.77	1.72	3.53	9.51	(0.12)	$ 11.46	$ 14.80	$ (8.07)
Basic weighted average LP units outstanding										180,000,000	161,000,000	137,000,000
Diluted income (loss) per LP unit:
Continuing operations		(2.28)	(0.20)	0.86	0.58	1.61	3.37	9.04	(0.34)	$ (1.16)	$ 13.84	$ (8.07)
Discontinued operations		10.31	0.88	0.84	0.19	0.11	0.16	0.47	0.22	12.62	0.96	0.00
Diluted income (loss) per LP unit		$ 8.03	$ 0.68	$ 1.70	$ 0.77	$ 1.72	$ 3.53	$ 9.51	$ (0.12)	$ 11.46	$ 14.80	$ (8.07)
Diluted weighted average LP units outstanding										180,000,000	161,000,000	137,000,000
Units distributed to LP unitholders	11,171,104									17,778,950	17,644,152	12,574,723
2017 LTIP units vested										22,840	7,902
Limited partners
Earnings Per LP Unit [Line Items]
Net (loss) income attributable to Icahn Enterprises from continuing operations										$ (209)	$ 2,228	$ (1,105)
Net income (loss) attributable to Icahn Enterprises from discontinued operations										$ 2,272	$ 154	$ (1)
Limited partners
Diluted income (loss) per LP unit:
Depositary units issued (value)	$ 600
General partner
Diluted income (loss) per LP unit:
Depositary units issued (value)	$ 12

Segment Reporting, Income Statements (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended								12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Net sales			$ 2,578	$ 2,815	$ 2,820	$ 2,363	$ 2,385	$ 2,334	$ 2,277	$ 2,310	$ 10,576	$ 9,306	$ 7,740
Other revenues from operations											647	743	840
Net gain (loss) from investment activities											322	302	(1,373)
Interest and dividend income											148	127	124
Gain on disposition of assets, net											84	2,163	6
Other (loss) income, net											0	(22)	42
Total revenues			2,802	2,569	3,423	2,983	2,482	3,406	4,353	2,378	11,777	12,619	7,379
Expenses:
Cost of goods sold											8,947	8,258	6,837
Other expenses from operations											529	518	631
Selling, general and administrative											1,386	1,269	1,001
Restructuring											21	4	5
Impairment											92	87	586
Interest expense											524	655	692
Total Expenses											11,499	10,791	9,752
Income (loss) before income tax benefit											278	1,828	(2,373)
Income tax benefit											4	529	88
Income (loss) from continuing operations			$ (194)	$ (323)	$ 421	$ 378	$ 138	$ 790	$ 1,637	$ (208)	282	2,357	(2,285)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											495	84	(1,158)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(213)	2,273	(1,127)
Supplemental information:
Capital expenditures											272	316	247
Depreciation and amortization											447	474	526
Investment Segment
Revenues:
Net sales											0	0	0
Other revenues from operations											0	0	0
Net gain (loss) from investment activities											635	241	(1,388)
Interest and dividend income											104	106	112
Gain on disposition of assets, net											0	0	0
Other (loss) income, net											(2)	(50)	53
Total revenues											737	297	(1,223)
Expenses:
Cost of goods sold											0	0	0
Other expenses from operations											0	0	0
Selling, general and administrative											12	13	34
Restructuring											0	0	0
Impairment											0	0	0
Interest expense											46	166	230
Total Expenses											58	179	264
Income (loss) before income tax benefit											679	118	(1,487)
Income tax benefit											0	0	0
Income (loss) from continuing operations											679	118	(1,487)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											360	38	(883)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											319	80	(604)
Supplemental information:
Capital expenditures											0	0	0
Depreciation and amortization											0	0	0
Energy Segment
Revenues:
Net sales											7,124	5,988	4,782
Other revenues from operations											0	0	0
Net gain (loss) from investment activities											0	0	5
Interest and dividend income											2	1	1
Gain on disposition of assets, net											(6)	(3)	0
Other (loss) income, net											15	2	(5)
Total revenues											7,135	5,988	4,783
Expenses:
Cost of goods sold											6,453	5,799	4,637
Other expenses from operations											0	0	0
Selling, general and administrative											138	143	138
Restructuring											5	0	0
Impairment											0	0	574
Interest expense											104	109	83
Total Expenses											6,700	6,051	5,432
Income (loss) before income tax benefit											435	(63)	(649)
Income tax benefit											(56)	338	45
Income (loss) from continuing operations											379	275	(604)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											141	46	(277)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											238	229	(327)
Supplemental information:
Capital expenditures											102	120	133
Depreciation and amortization											278	278	258
Disaggregated revenue											7,124	5,988	4,782
Automotive Segment
Revenues:
Net sales											2,295	2,225	2,079
Other revenues from operations											563	498	422
Net gain (loss) from investment activities											0	0	0
Interest and dividend income											0	0	0
Gain on disposition of assets, net											(1)	5	1
Other (loss) income, net											(1)	0	1
Total revenues											2,856	2,728	2,503
Expenses:
Cost of goods sold											1,502	1,540	1,430
Other expenses from operations											474	438	430
Selling, general and administrative											1,051	919	648
Restructuring											5	0	0
Impairment											90	15	1
Interest expense											16	13	7
Total Expenses											3,138	2,925	2,516
Income (loss) before income tax benefit											(282)	(197)	(13)
Income tax benefit											52	146	32
Income (loss) from continuing operations											(230)	(51)	19
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(230)	(51)	19
Supplemental information:
Capital expenditures											66	86	37
Depreciation and amortization											92	111	98
Disaggregated revenue											2,858	2,723	2,501
Food Packaging Segment
Revenues:
Net sales											395	392	329
Other revenues from operations											0	0	0
Net gain (loss) from investment activities											0	0	0
Interest and dividend income											1	0	0
Gain on disposition of assets, net											0	0	0
Other (loss) income, net											(17)	(3)	(1)
Total revenues											379	389	328
Expenses:
Cost of goods sold											316	297	249
Other expenses from operations											0	0	0
Selling, general and administrative											57	61	48
Restructuring											9	2	3
Impairment											0	1	0
Interest expense											16	13	12
Total Expenses											398	374	312
Income (loss) before income tax benefit											(19)	15	16
Income tax benefit											4	(21)	(8)
Income (loss) from continuing operations											(15)	(6)	8
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											(3)	(1)	2
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(12)	(5)	6
Supplemental information:
Capital expenditures											25	26	18
Depreciation and amortization											26	25	20
Metals Segment
Revenues:
Net sales											466	409	267
Other revenues from operations											0	0	0
Net gain (loss) from investment activities											0	0	0
Interest and dividend income											0	0	0
Gain on disposition of assets, net											0	0	1
Other (loss) income, net											1	(1)	1
Total revenues											467	408	269
Expenses:
Cost of goods sold											441	389	284
Other expenses from operations											0	0	0
Selling, general and administrative											19	19	18
Restructuring											0	1	2
Impairment											1	0	1
Interest expense											0	0	0
Total Expenses											461	409	305
Income (loss) before income tax benefit											6	(1)	(36)
Income tax benefit											(1)	(43)	16
Income (loss) from continuing operations											5	(44)	(20)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											5	(44)	(20)
Supplemental information:
Capital expenditures											21	30	5
Depreciation and amortization											18	20	22
Real Estate Segment
Revenues:
Net sales											22	15	17
Other revenues from operations											84	72	71
Net gain (loss) from investment activities											0	0	0
Interest and dividend income											16	7	0
Gain on disposition of assets, net	$ 89	$ 456									89	496	1
Other (loss) income, net											1	38	0
Total revenues											212	628	89
Expenses:
Cost of goods sold											18	11	13
Other expenses from operations											54	46	46
Selling, general and administrative											22	18	18
Restructuring											0	0	0
Impairment											0	2	5
Interest expense											1	2	2
Total Expenses											95	79	84
Income (loss) before income tax benefit											117	549	5
Income tax benefit											(5)	0	0
Income (loss) from continuing operations											112	549	5
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											112	549	5
Supplemental information:
Capital expenditures											13	9	1
Depreciation and amortization											19	20	22
Home Fashion Segment
Revenues:
Net sales											171	183	195
Other revenues from operations											0	0	0
Net gain (loss) from investment activities											0	0	0
Interest and dividend income											0	0	0
Gain on disposition of assets, net											0	0	0
Other (loss) income, net											0	0	1
Total revenues											171	183	196
Expenses:
Cost of goods sold											144	162	168
Other expenses from operations											0	0	0
Selling, general and administrative											34	39	38
Restructuring											2	1	0
Impairment											1	1	2
Interest expense											1	0	0
Total Expenses											182	203	208
Income (loss) before income tax benefit											(11)	(20)	(12)
Income tax benefit											0	0	0
Income (loss) from continuing operations											(11)	(20)	(12)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(11)	(20)	(12)
Supplemental information:
Capital expenditures											5	5	11
Depreciation and amortization											8	8	8
Mining Segment
Revenues:
Net sales											103	94	71
Other revenues from operations											0	0	0
Net gain (loss) from investment activities											0	0	0
Interest and dividend income											1	1	2
Gain on disposition of assets, net											(3)	0	0
Other (loss) income, net											5	(2)	(10)
Total revenues											106	93	63
Expenses:
Cost of goods sold											73	60	56
Other expenses from operations											0	0	0
Selling, general and administrative											27	14	22
Restructuring											0	0	0
Impairment											0	0	0
Interest expense											3	6	7
Total Expenses											103	80	85
Income (loss) before income tax benefit											3	13	(22)
Income tax benefit											(2)	(3)	(2)
Income (loss) from continuing operations											1	10	(24)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											(2)	1	(5)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											3	9	(19)
Supplemental information:
Capital expenditures											40	38	22
Depreciation and amortization											6	5	6
Railcar Segment
Revenues:
Net sales											0	0	0
Other revenues from operations											0	173	347
Net gain (loss) from investment activities											0	0	0
Interest and dividend income											0	0	0
Gain on disposition of assets, net											5	1,664	3
Other (loss) income, net											0	0	0
Total revenues											5	1,837	350
Expenses:
Cost of goods sold											0	0	0
Other expenses from operations											1	34	155
Selling, general and administrative											1	10	16
Restructuring											0	0	0
Impairment											0	68	0
Interest expense											0	23	62
Total Expenses											2	135	233
Income (loss) before income tax benefit											3	1,702	117
Income tax benefit											(2)	(531)	0
Income (loss) from continuing operations											1	1,171	117
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											0	0	5
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											1	1,171	112
Supplemental information:
Capital expenditures											0	2	20
Depreciation and amortization											0	7	92
Holding Company
Revenues:
Net sales											0	0	0
Other revenues from operations											0	0	0
Net gain (loss) from investment activities											(313)	61	10
Interest and dividend income											24	12	9
Gain on disposition of assets, net											0	1	0
Other (loss) income, net											(2)	(6)	2
Total revenues											(291)	68	21
Expenses:
Cost of goods sold											0	0	0
Other expenses from operations											0	0	0
Selling, general and administrative											25	33	21
Restructuring											0	0	0
Impairment											0	0	3
Interest expense											337	323	289
Total Expenses											362	356	313
Income (loss) before income tax benefit											(653)	(288)	(292)
Income tax benefit											14	643	5
Income (loss) from continuing operations											(639)	355	(287)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest											(1)	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(638)	355	(287)
Supplemental information:
Capital expenditures											0	0	0
Depreciation and amortization											0	0	0
Petroleum products \| Energy Segment
Supplemental information:
Disaggregated revenue											6,773	5,657	4,426
Nitrogen fertilizer products \| Energy Segment
Supplemental information:
Disaggregated revenue											351	331	356
Automotive services \| Automotive Segment
Supplemental information:
Disaggregated revenue											1,321	1,186	998
Aftermarket parts sales \| Automotive Segment
Supplemental information:
Disaggregated revenue											1,537	$ 1,537	$ 1,503
Difference between Revenue Guidance in Effect before and after Topic 606 \| Automotive Segment
Revenues:
Net sales											62
Expenses:
Cost of goods sold											$ 62

Segment Reporting, Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 2,656	$ 1,164
Cash held at consolidated affiliated partnerships and restricted cash	2,682	747
Investments	8,337	10,015
Accounts receivable, net	474	473
Inventories, net	1,779	1,730
Property, plant and equipment, net	4,703	5,186
Goodwill and intangible assets, net	748	871
Assets held for sale	333	10,263
Other assets	1,684	1,352
Total Assets	23,396	31,801
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	2,444	3,971
Securities sold, not yet purchased, at fair value	468	1,023
Due to brokers	141	1,057
Liabilities held for sale	112	7,010
Debt	7,326	7,372
Total liabilities	10,491	20,433
Equity attributable to Icahn Enterprises	6,529	5,106
Equity attributable to non-controlling interests	6,376	6,262
Total equity	12,905	11,368	$ 8,017	$ 10,033
Total Liabilities and Equity	23,396	31,801
Investment Segment
ASSETS
Cash and cash equivalents	5	17
Cash held at consolidated affiliated partnerships and restricted cash	2,648	734
Investments	6,867	9,532
Accounts receivable, net	0	0
Inventories, net	0	0
Property, plant and equipment, net	0	0
Goodwill and intangible assets, net	0	0
Assets held for sale	0	0
Other assets	1,230	516
Total Assets	10,750	10,799
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	40	1,302
Securities sold, not yet purchased, at fair value	468	1,023
Due to brokers	141	1,057
Liabilities held for sale	0	0
Debt	0	0
Total liabilities	649	3,382
Equity attributable to Icahn Enterprises	5,066	3,052
Equity attributable to non-controlling interests	5,035	4,365
Total equity	10,101	7,417
Total Liabilities and Equity	10,750	10,799
Energy Segment
ASSETS
Cash and cash equivalents	668	482
Cash held at consolidated affiliated partnerships and restricted cash	0	0
Investments	84	83
Accounts receivable, net	169	179
Inventories, net	380	364
Property, plant and equipment, net	3,042	3,234
Goodwill and intangible assets, net	278	298
Assets held for sale	33	0
Other assets	84	60
Total Assets	4,738	4,700
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	1,025	1,125
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	1,170	1,166
Total liabilities	2,195	2,291
Equity attributable to Icahn Enterprises	1,243	1,098
Equity attributable to non-controlling interests	1,300	1,311
Total equity	2,543	2,409
Total Liabilities and Equity	4,738	4,700
Automotive Segment
ASSETS
Cash and cash equivalents	43	52
Cash held at consolidated affiliated partnerships and restricted cash	0	0
Investments	59	0
Accounts receivable, net	149	128
Inventories, net	1,203	1,145
Property, plant and equipment, net	941	958
Goodwill and intangible assets, net	412	505
Assets held for sale	0	0
Other assets	217	223
Total Assets	3,024	3,011
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	905	944
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	372	340
Total liabilities	1,277	1,284
Equity attributable to Icahn Enterprises	1,747	1,727
Equity attributable to non-controlling interests	0	0
Total equity	1,747	1,727
Total Liabilities and Equity	3,024	3,011
Food Packaging Segment
ASSETS
Cash and cash equivalents	46	16
Cash held at consolidated affiliated partnerships and restricted cash	1	2
Investments	0	0
Accounts receivable, net	74	78
Inventories, net	93	92
Property, plant and equipment, net	169	170
Goodwill and intangible assets, net	32	36
Assets held for sale	0	0
Other assets	96	93
Total Assets	511	487
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	164	172
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	273	273
Total liabilities	437	445
Equity attributable to Icahn Enterprises	55	28
Equity attributable to non-controlling interests	19	14
Total equity	74	42
Total Liabilities and Equity	511	487
Metals Segment
ASSETS
Cash and cash equivalents	20	24
Cash held at consolidated affiliated partnerships and restricted cash	1	5
Investments	0	0
Accounts receivable, net	48	40
Inventories, net	39	33
Property, plant and equipment, net	115	110
Goodwill and intangible assets, net	2	3
Assets held for sale	1	2
Other assets	7	9
Total Assets	233	226
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	56	43
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	0	1
Total liabilities	56	44
Equity attributable to Icahn Enterprises	177	182
Equity attributable to non-controlling interests	0	0
Total equity	177	182
Total Liabilities and Equity	233	226
Real Estate Segment
ASSETS
Cash and cash equivalents	39	32
Cash held at consolidated affiliated partnerships and restricted cash	26	2
Investments	15	16
Accounts receivable, net	3	3
Inventories, net	0	0
Property, plant and equipment, net	367	454
Goodwill and intangible assets, net	24	29
Assets held for sale	0	0
Other assets	34	395
Total Assets	508	931
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	41	63
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	2	22
Total liabilities	43	85
Equity attributable to Icahn Enterprises	465	846
Equity attributable to non-controlling interests	0	0
Total equity	465	846
Total Liabilities and Equity	508	931
Home Fashion Segment
ASSETS
Cash and cash equivalents	1	0
Cash held at consolidated affiliated partnerships and restricted cash	2	4
Investments	0	0
Accounts receivable, net	31	35
Inventories, net	64	66
Property, plant and equipment, net	69	72
Goodwill and intangible assets, net	0	0
Assets held for sale	0	0
Other assets	5	6
Total Assets	172	183
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	35	34
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	4	5
Total liabilities	39	39
Equity attributable to Icahn Enterprises	133	144
Equity attributable to non-controlling interests	0	0
Total equity	133	144
Total Liabilities and Equity	172	183
Mining Segment
ASSETS
Cash and cash equivalents	0	15
Cash held at consolidated affiliated partnerships and restricted cash	0	0
Investments	0	0
Accounts receivable, net	0	10
Inventories, net	0	30
Property, plant and equipment, net	0	188
Goodwill and intangible assets, net	0	0
Assets held for sale	299	0
Other assets	0	22
Total Assets	299	265
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	0	45
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	112	0
Debt	0	58
Total liabilities	112	103
Equity attributable to Icahn Enterprises	165	138
Equity attributable to non-controlling interests	22	24
Total equity	187	162
Total Liabilities and Equity	299	265
Railcar Segment
ASSETS
Cash and cash equivalents	0	0
Cash held at consolidated affiliated partnerships and restricted cash	0	0
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Property, plant and equipment, net	0	0
Goodwill and intangible assets, net	0	0
Assets held for sale	0	14
Other assets	0	0
Total Assets	0	14
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	0	0
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	0	0
Total liabilities	0	0
Equity attributable to Icahn Enterprises	0	14
Equity attributable to non-controlling interests	0	0
Total equity	0	14
Total Liabilities and Equity	0	14
Holding Company
ASSETS
Cash and cash equivalents	1,834	526
Cash held at consolidated affiliated partnerships and restricted cash	4	0
Investments	1,312	384
Accounts receivable, net	0	0
Inventories, net	0	0
Property, plant and equipment, net	0	0
Goodwill and intangible assets, net	0	0
Assets held for sale	0	0
Other assets	11	28
Total Assets	3,161	938
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities	178	243
Securities sold, not yet purchased, at fair value	0	0
Due to brokers	0	0
Liabilities held for sale	0	0
Debt	5,505	5,507
Total liabilities	5,683	5,750
Equity attributable to Icahn Enterprises	(2,522)	(4,821)
Equity attributable to non-controlling interests	0	9
Total equity	(2,522)	(4,812)
Total Liabilities and Equity	$ 3,161	938
Discontinued Operations
ASSETS
Cash and cash equivalents		0
Cash held at consolidated affiliated partnerships and restricted cash		0
Investments		0
Accounts receivable, net		0
Inventories, net		0
Property, plant and equipment, net		0
Goodwill and intangible assets, net		0
Assets held for sale		10,247
Other assets		0
Total Assets		10,247
LIABILITIES AND EQUITY
Accounts payable, accrued expenses and other liabilities		0
Securities sold, not yet purchased, at fair value		0
Due to brokers		0
Liabilities held for sale		7,010
Debt		0
Total liabilities		7,010
Equity attributable to Icahn Enterprises		2,698
Equity attributable to non-controlling interests		539
Total equity		3,237
Total Liabilities and Equity		$ 10,247

Segment and Geographic Reporting Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 2,578	$ 2,815	$ 2,820	$ 2,363	$ 2,385	$ 2,334	$ 2,277	$ 2,310	$ 10,576	$ 9,306	$ 7,740
Other revenues from operations									647	743	840
Property, plant and equipment, net	4,703				5,186				4,703	5,186
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									10,172	8,893	7,412
Other revenues from operations									629	716	791
Property, plant and equipment, net	4,432				4,776				4,432	4,776
Other geographical locations
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									404	413	328
Other revenues from operations									18	27	$ 49
Property, plant and equipment, net	$ 271				$ 410				$ 271	$ 410

Discontinued Operations Income From Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations	$ 1,376	$ 176	$ 167	$ 45	$ 59	$ 39	$ 88	$ 48	$ 1,764	$ 234	$ 65
Income (loss) from discontinued operations attributable to Icahn Enterprises									1,720	157	(1)
Capital expenditures									125	171	113
Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales									6,221	7,985	7,771
Other revenues from operations									892	1,095	1,118
Net gain on investment activities									0	2	0
Interest and dividend income									5	9	7
Gain (loss) on disposition of assets, net									65	6	8
Other income, net									19	61	39
Revenue									7,202	9,158	8,943
Cost of goods sold									5,214	6,802	6,581
Other expenses from operations									425	525	528
Selling, general and administrative									879	1,270	1,309
Restructuring, net									13	21	27
Impairment									6	25	123
Interest expense									160	187	186
Costs and expenses									6,697	8,830	8,754
Income (loss) from discontinued operations before gain (loss) on sale and income tax (expense) benefit									505	328	189
Gain (loss) on sale of discontinued operations									1,430	(3)	0
Income (loss) from discontinued operations before income tax (expense) benefit									1,935	325	189
Income tax (expense) benefit									(171)	(91)	(124)
Income (loss) from discontinued operations									1,764	234	65
Less: income from discontinued operations attributable to non-controlling interests									44	77	66
Income (loss) from discontinued operations attributable to Icahn Enterprises									1,720	157	(1)
Capital expenditures									486	676	579
Depreciation and amortization									166	528	488
Federal-Mogul \| Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales									5,993	7,720	7,341
Other revenues from operations									0	0	0
Net gain on investment activities									0	0	0
Interest and dividend income									2	6	4
Gain (loss) on disposition of assets, net									65	7	8
Other income, net									5	31	31
Revenue									6,065	7,764	7,384
Cost of goods sold									4,999	6,553	6,215
Other expenses from operations									0	0	0
Selling, general and administrative									601	862	845
Restructuring, net									13	21	27
Impairment									2	25	17
Interest expense									137	154	150
Costs and expenses									5,752	7,615	7,254
Income (loss) from discontinued operations before gain (loss) on sale and income tax (expense) benefit									313	149	130
Gain (loss) on sale of discontinued operations									251	0	0
Income (loss) from discontinued operations before income tax (expense) benefit									564	149	130
Income tax (expense) benefit									(69)	(33)	(43)
Income (loss) from discontinued operations									495	116	87
Less: income from discontinued operations attributable to non-controlling interests									7	11	24
Income (loss) from discontinued operations attributable to Icahn Enterprises									488	105	63
Capital expenditures									303	393	381
Depreciation and amortization									100	397	375
Tropicana \| Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales									0	0	0
Other revenues from operations									679	898	943
Net gain on investment activities									0	0	0
Interest and dividend income									1	1	1
Gain (loss) on disposition of assets, net									0	(1)	0
Other income, net									1	27	3
Revenue									681	925	947
Cost of goods sold									0	0	0
Other expenses from operations									311	425	460
Selling, general and administrative									238	371	432
Restructuring, net									0	0	0
Impairment									0	0	106
Interest expense									4	11	13
Costs and expenses									553	807	1,011
Income (loss) from discontinued operations before gain (loss) on sale and income tax (expense) benefit									128	118	(64)
Gain (loss) on sale of discontinued operations									779	(3)	0
Income (loss) from discontinued operations before income tax (expense) benefit									907	115	(64)
Income tax (expense) benefit									(89)	(93)	(24)
Income (loss) from discontinued operations									818	22	(88)
Less: income from discontinued operations attributable to non-controlling interests									17	13	14
Income (loss) from discontinued operations attributable to Icahn Enterprises									801	9	(102)
Capital expenditures									58	112	85
Depreciation and amortization									19	73	71
American Railcar Industries \| Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales									228	265	430
Other revenues from operations									213	197	175
Net gain on investment activities									0	2	0
Interest and dividend income									2	2	2
Gain (loss) on disposition of assets, net									0	0	0
Other income, net									13	3	5
Revenue									456	469	612
Cost of goods sold									215	249	366
Other expenses from operations									114	100	68
Selling, general and administrative									40	37	32
Restructuring, net									0	0	0
Impairment									4	0	0
Interest expense									19	22	23
Costs and expenses									392	408	489
Income (loss) from discontinued operations before gain (loss) on sale and income tax (expense) benefit									64	61	123
Gain (loss) on sale of discontinued operations									400	0	0
Income (loss) from discontinued operations before income tax (expense) benefit									464	61	123
Income tax (expense) benefit									(13)	35	(57)
Income (loss) from discontinued operations									451	96	66
Less: income from discontinued operations attributable to non-controlling interests									20	53	28
Income (loss) from discontinued operations attributable to Icahn Enterprises									431	43	38
Depreciation and amortization									$ 47	$ 58	$ 42

Discontinued Operations Assets and Liabilities Held For Sale (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale	$ 333	$ 10,263
Liabilities held for sale	$ 112	7,010
Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents		518
Restricted cash		39
Investments		354
Accounts receivable, net		1,237
Inventories, net		1,510
Property, plant and equipment, net		4,536
Goodwill		948
Intangible assets, net		591
Other assets		514
Assets held for sale		10,247
Accounts payable, accrued expenses and other liabilities		1,922
Deferred tax liability		192
Post-retirement benefit liability		1,083
Debt		3,813
Liabilities held for sale		7,010
Held for sale, not discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other assets		16
Federal-Mogul \| Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents		315
Restricted cash		4
Investments		324
Accounts receivable, net		1,182
Inventories, net		1,456
Property, plant and equipment, net		2,545
Goodwill		941
Intangible assets, net		517
Other assets		394
Assets held for sale		7,678
Accounts payable, accrued expenses and other liabilities		1,718
Deferred tax liability		0
Post-retirement benefit liability		1,075
Debt		3,130
Liabilities held for sale		5,923
Tropicana \| Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents		103
Restricted cash		16
Investments		7
Accounts receivable, net		11
Inventories, net		0
Property, plant and equipment, net		792
Goodwill		0
Intangible assets, net		74
Other assets		93
Assets held for sale		1,096
Accounts payable, accrued expenses and other liabilities		142
Deferred tax liability		0
Post-retirement benefit liability		0
Debt		137
Liabilities held for sale		279
American Railcar Industries \| Discontinued operations and held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents		100
Restricted cash		19
Investments		23
Accounts receivable, net		44
Inventories, net		54
Property, plant and equipment, net		1,199
Goodwill		7
Intangible assets, net		0
Other assets		27
Assets held for sale		1,473
Accounts payable, accrued expenses and other liabilities		62
Deferred tax liability		192
Post-retirement benefit liability		8
Debt		546
Liabilities held for sale		$ 808

Income Taxes Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax benefit (expense) at U.S. statutory rate	$ (58)	$ (640)	$ 831
Valuation allowance	(4)	529	(46)
Non-controlling interest	26	(6)	(6)
Goodwill impairment	(18)	0	(226)
Stock dispositions	69	0	0
Income not subject to taxation	14	220	(440)
Enactment of U.S. tax legislation, net of valuation allowance	0	392	0
Other	(25)	34	(25)
Income tax benefit	$ 4	$ 529	$ 88

Income Taxes Accounting for Uncertainty in Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Unrecognized tax benefits balance	$ 34	$ 34	$ 52	$ 56
Addition based on tax positions related to the current year	0	0	2
Increase for tax positions of prior years	6	0	0
Decrease for tax positions of prior years	0	(3)	(1)
Decrease for statute of limitation expiration	$ (6)	$ (15)	$ (5)

Income Taxes Narrative (Details) - USD ($) $ in Millions		12 Months Ended
Income Taxes Narrative (Details) - USD ($) $ in Millions	Aug. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Book basis of net assets		$ 6,529	$ 5,106
Book/tax basis difference		(1,940)	(450)
Tax basis of net assets		4,589	4,656
Domestic income (loss) from continuing operations before taxes		290	1,798	$ (2,370)
Foreign income (loss) from continuing operations before taxes		(12)	30	(3)
Income before income tax benefit (expense)		278	1,828	(2,373)
Current income tax (expense) benefit		(15)	(28)	(46)
Deferred income tax (expense) benefit		19	557	134
Income tax benefit (expense)		4	529	88
Deferred tax assets, Property, pland and equipment		17	61
Deferred tax asset, net operating loss		791	711
deferred tax asset, Tax credits		46	71
Deferred Tax Assets, Capital Loss Carryforwards		50	0
Deferred tax asset, Post-employment benefits, including pensions		0	162
Deferred tax asset, Other		82	248
Deferred tax assets, gross		986	1,253
Deferred Tax Assets, Valuation Allowance		518	483
Deferred Tax Assets, Net of Valuation Allowance		468	770
Deferred tax liabilities, Property, plant and equipment		(129)	(235)
Deferred tax liabilities, Intangible assets		(33)	(115)
Deferred tax liability, Investment in partnerships		(681)	(774)
Deferred tax liabilities, Investment in U.S. subsidiaries		(184)	(184)
Deferred tax liabilities, Other		(80)	(119)
Deferred Tax Liabilities, Gross		(1,107)	(1,427)
Deferred tax liabilities, net of deferred tax assets		639	657
Deferred Tax Assets, Net		37	75
Deferred tax liability		676	$ 732
Increase (decrease) in deferred tax asset valuation amount		35
Undistributed earnings of foreign subsidiaries		$ 54
U.S. Federal statutory corporate income tax rate		21.00%	35.00%
Unrecognized tax benefits balance		$ 34	$ 34	52	$ 56
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		30	28	37
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued		1	2	9
Income tax expense related to interest and penalties related to unrecognized tax benefits		(1)	(7)	1
Icahn Enterprises Holdings
Income Tax Contingency [Line Items]
Book basis of net assets		6,557	5,133
Book/tax basis difference		(1,940)	(450)
Tax basis of net assets		4,617	4,683
Income before income tax benefit (expense)		279	1,830	(2,372)
Income tax benefit (expense)		4	529	88
Deferred tax liability		676	732
American Entertainment Properties Corp.
Income Tax Contingency [Line Items]
Deferred tax assets, Operating loss carryforwards, Subject to expiration		2,000
CVR Energy
Income Tax Contingency [Line Items]
Equity issued to acquire additional interest in consolidated subsidiary (number of units)	13,699,549
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit		3
CVR Refining
Income Tax Contingency [Line Items]
Common units validly tendered and not properly withdrawn	21,625,106
Domestic tax authority
Income Tax Contingency [Line Items]
Current income tax (expense) benefit		(11)	(15)	(28)
Deferred income tax (expense) benefit		20	544	131
Foreign tax authority
Income Tax Contingency [Line Items]
Current income tax (expense) benefit		(4)	(13)	(18)
Deferred income tax (expense) benefit		(1)	$ 13	$ 3
Kansas \| CVR Energy
Income Tax Contingency [Line Items]
Tax credits		35
United States \| Viskase
Income Tax Contingency [Line Items]
Operating loss carryforwards		$ 68
Maximum \| United States \| American Entertainment Properties Corp.
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Date		Dec. 31, 2037
Maximum \| Other Foreign countries \| Viskase
Income Tax Contingency [Line Items]
Operating loss carryforwards		$ 19
Minimum \| Kansas \| CVR Energy
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Date		Dec. 31, 2033
Minimum \| United States \| American Entertainment Properties Corp.
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Date		Dec. 31, 2029
Minimum \| United States \| Viskase
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Date		Dec. 31, 2024
Minimum \| Other Foreign countries \| Viskase
Income Tax Contingency [Line Items]
Operating loss carryforwards		$ 5

Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Changes in Accumulated Other Comprehensive Loss [Abstract]
AOCI, Post-employment Benefits, net of tax	$ 47	$ 572
AOCI, Hedge instruments, net of tax	0	(15)
AOCI, Translation adjustments and other, net of tax	(37)	(797)
Accumulated other comprehensive loss	(84)	(1,384)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	1
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(3)
Other comprehensive income, translation adjustments and other, before reclassificaitons, net of tax	(86)
Other comprehensive income, before reclassifications to income	(88)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	20
Amount of Loss Reclassified from AOCI into Income (Effective Portion)	0
Reclassificaion of translation adjustments and other in AOCI into earnings, net of tax	0
Other comprehensive income, portion representing reclassificaitons to earnings	20
Post-employment benefits	21	50	$ 18
Hedge instruments	(3)	(1)	3
Translation adjustments and other	(86)	124	(148)
Other comprehensive (loss) income, net of tax	(68)	$ 173	$ (127)
other comprehensive income (loss), defined benefit plan, Gain (loss), Reclassification adjustment from disposition of consolidated subsidiaries	504
Derivative Instruments, Gain (Loss) reclassification from Accumulated OCI related to the Disposition of consolidated subsidiaries	18
Reclassificaion of translation adjustments and other in AOCI due to disposition of consolidated subsidiaries	846
Other comprehensive income, portion representing disposition of consolidated subsidiaries	$ 1,368

Other Income (Loss), Net (Details) - USD ($) $ in Millions	12 Months Ended
Other Income (Loss), Net (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	$ 0	$ (22)	$ 42
Other derivative (loss) income
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(1)	(41)	66
Dividend expense
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(2)	(10)	(14)
Loss on extinguishment of debt
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	(12)	(5)
Equity earnings from non-consolidated affiliates
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	7	1	0
Foreign currency transaction (loss) income
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(1)	1	(3)
Tax settlement gain
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	38	0
Non-service pension and other post-retirement benefits expense
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(8)	(4)	(4)
Other
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	$ 5	$ 5	$ 2

Commitments and Contingencies Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Affiliate ownership interest	98.01%
Funded status of related party pension plan	$ (80)
Energy Segment
Loss Contingencies [Line Items]
Environmental loss contingency accrual	8	$ 4
Price of RINs	60	249	$ 206
Biofuel blending obligation	4	28
Metals Segment
Loss Contingencies [Line Items]
Environmental loss contingency accrual	27	28
Automotive Segment
Loss Contingencies [Line Items]
Environmental loss contingency accrual		16
Federal-Mogul
Loss Contingencies [Line Items]
Contribution to subsidiary	56
Federal-Mogul Products, Inc.
Loss Contingencies [Line Items]
Payment for litigation settlement agreement	$ 3
Mr. Icahn and affiliates
Loss Contingencies [Line Items]
Affiliate ownership interest	91.70%
Mr. Icahn and affiliates \| Icahn Enterprises G.P.
Loss Contingencies [Line Items]
Affiliate ownership in parent company general partner	100.00%
Starfire Holding Corporation
Loss Contingencies [Line Items]
Ownership percentage by principal owner	99.60%
Pension funding indemnity agreement with subsidiary	$ 250
Accrued expenses and other liabilities
Loss Contingencies [Line Items]
Environmental loss contingency accrual	$ 37	$ 34

Commitments and Contingencies Purchase Obligations and Operating Lease Commitment Tables (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated operating leases future minimum payments due
2019	$ 196
2020	175
2021	152
2022	134
2023	85
Thereafter	235
Future minimum payments under operating leases	977
Rent expense	168	$ 155	$ 136
Energy Segment
Unconditional purchase obligations
2019	129
2020	89
2021	78
2022	76
2023	75
Thereafter	444
Minimum required payments for unconditional purchase obligations	891
Amounts purchased under supply agreements	$ 214	$ 209	$ 151

Pensions and Other Post-Retirement Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded status of the plan and amounts recognized in the consolidated balance sheets	$ (80)
U.S. and Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1	$ 1	$ 1
Interest cost	6	7	7
Expected return on plan assets	(6)	(8)	(8)
Amortization of actuarial losses	1	5	4
Settlement loss recognized	7	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	9	5	4
Benefit obligation	146	187	164
Benefits paid	(8)	(10)
Actuarial (gain) loss	(11)	9
Plan settlements	(28)	0
Increase due to acquisitions	0	15
Currency translation	(1)	1
Actual return on plan assets	(6)	15
Employer contributions	3	0
Plan settlements	(28)	0
Benefits paid	(7)	(10)
Plan Assets	77	115	$ 110
Funded status of the plan and amounts recognized in the consolidated balance sheets	(69)	(72)
Amounts recognized in accumulated other comprehensive loss, inclusive of tax impacts	(45)	(50)
Recurring measurement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	67	106
Plan assets measured at fair value	77	115
Recurring measurement \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	63	100
Recurring measurement \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	4	6
Recurring measurement \| Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Investments measured at net asset value	10	9
Cash and cash equivalents \| Recurring measurement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	3	4
Cash and cash equivalents \| Recurring measurement \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	3	4
Cash and cash equivalents \| Recurring measurement \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	0	0
Government debt securities \| Recurring measurement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	3	4
Government debt securities \| Recurring measurement \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	1	1
Government debt securities \| Recurring measurement \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	2	3
Exchange traded funds \| Recurring measurement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	16	26
Exchange traded funds \| Recurring measurement \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	16	26
Exchange traded funds \| Recurring measurement \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	0	0
Mutual funds \| Recurring measurement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	24	39
Mutual funds \| Recurring measurement \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	22	36
Mutual funds \| Recurring measurement \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	2	3
Common stock \| Recurring measurement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	21	33
Common stock \| Recurring measurement \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	21	33
Common stock \| Recurring measurement \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan Assets	$ 0	$ 0

Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplemental cash flow information [Line Items]
Cash payments for interest, net of amounts capitalized	$ 484	$ 499	$ 489
Net cash (receipts) payments for income taxes, net of refunds	20	39	10
Capital expenditures included in accounts payable, accrued expenses and other liabilities	17	8	18
Equity investment consideration received from sale of business	1,241	0	0
Acquisition of subsidiary common stock included in accrued expenses and other liabilities	0	51	0
Seller financing secured mortgages resulting from disposition of assets	0	375	0
Investments in subsidiaries prior to acquiring a controlling interest	0	0	286
Discontinued operations and held for sale
Supplemental cash flow information [Line Items]
Capital expenditures included in accounts payable, accrued expenses and other liabilities	$ 48	$ 72	$ 71

Subsequent Events (Details)	Feb. 26, 2019 $ / shares
Subsequent event
Subsequent Event [Line Items]
Distribution declared per LP unit	$ 2.00

Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Data (Unaudited) [Abstract]
Net sales	$ 2,578	$ 2,815	$ 2,820	$ 2,363	$ 2,385	$ 2,334	$ 2,277	$ 2,310	$ 10,576	$ 9,306	$ 7,740
Gross margin on net sales	376	457	406	390	135	328	259	326
Total revenues	2,802	2,569	3,423	2,983	2,482	3,406	4,353	2,378	11,777	12,619	7,379
Income (loss) from continuing operations	(194)	(323)	421	378	138	790	1,637	(208)	282	2,357	(2,285)
Income from discontinued operations	1,376	176	167	45	59	39	88	48	1,764	234	65
Net income (loss)	1,182	(147)	588	423	197	829	1,725	(160)	2,046	2,591	(2,220)
Less: net income (loss) attributable to non-controlling interests	247	(273)	279	286	(101)	232	172	(142)	539	161	(1,092)
Net income (loss) attributable to Icahn Enterprises	$ 935	$ 126	$ 309	$ 137	$ 298	$ 597	$ 1,553	$ (18)	$ 1,507	$ 2,430	$ (1,128)
Basic income (loss) per LP unit:
Continuing operations	$ (2.28)	$ (0.20)	$ 0.86	$ 0.58	$ 1.61	$ 3.37	$ 9.04	$ (0.34)	$ (1.16)	$ 13.84	$ (8.07)
Discontinued operations	10.31	0.88	0.84	0.19	0.11	0.16	0.47	0.22	12.62	0.96	0.00
Basic income (loss) per LP unit	8.03	0.68	1.70	0.77	1.72	3.53	9.51	(0.12)	11.46	14.80	(8.07)
Diluted income (loss) per LP unit:
Continuing operations	(2.28)	(0.20)	0.86	0.58	1.61	3.37	9.04	(0.34)	(1.16)	13.84	(8.07)
Discontinued operations	10.31	0.88	0.84	0.19	0.11	0.16	0.47	0.22	12.62	0.96	0.00
Diluted income (loss) per LP unit	$ 8.03	$ 0.68	$ 1.70	$ 0.77	$ 1.72	$ 3.53	$ 9.51	$ (0.12)	$ 11.46	$ 14.80	$ (8.07)

Schedule I Condensed Financial Information of Parent - Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash and cash equivalents	$ 2,656	$ 1,164
Restricted cash	2,682	747
Investments	8,337	10,015
Other assets	1,020	846
Total Assets	23,396	31,801
Accrued expenses and other liabilities	900	984
Debt	7,326	7,372
Total liabilities	10,491	20,433
Commitments and contingencies (Note 3)
Limited partners: Depositary units: 191,366,097 and 173,564,307 units issued and outstanding at December 31, 2018 and 2017, respectively	7,319	5,341
General partner	(790)	(235)
Total equity	12,905	11,368	$ 8,017	$ 10,033
Total Liabilities and Equity	23,396	31,801
Icahn Enterprises (Parent)
Investments in subsidiaries, net	12,158	10,737
Total Assets	12,158	10,737
Accrued expenses and other liabilities	124	124
Debt	5,505	5,507
Total liabilities	5,629	5,631
Commitments and contingencies (Note 3)
Limited partners: Depositary units: 191,366,097 and 173,564,307 units issued and outstanding at December 31, 2018 and 2017, respectively	7,319	5,341
General partner	(790)	(235)
Total equity	6,529	5,106
Total Liabilities and Equity	12,158	10,737
Icahn Enterprises Holdings (Parent)
Cash and cash equivalents	30	241
Restricted cash	29	0
Investments	723	1
Other assets	60	84
Investments in subsidiaries, net	11,355	10,467
Total Assets	12,197	10,793
Accrued expenses and other liabilities	131	128
Debt	5,509	5,532
Total liabilities	5,640	5,660
Commitments and contingencies (Note 3)
Limited partners: Depositary units: 191,366,097 and 173,564,307 units issued and outstanding at December 31, 2018 and 2017, respectively	7,421	5,420
General partner	(864)	(287)
Total equity	6,557	5,133
Total Liabilities and Equity	$ 12,197	$ 10,793

Schedule I (Parentheticals) (Details) - shares	Dec. 31, 2018	Dec. 31, 2017
Limited partners: Depositary units issued	191,366,097	173,564,307
Limited partners: Depositary units outstanding	191,366,097	173,564,307
Icahn Enterprises (Parent)
Limited partners: Depositary units issued	191,366,097	173,564,307
Limited partners: Depositary units outstanding	191,366,097	173,564,307

Schedule I Condensed Financial Information of Parent - Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest and dividend income									$ 148	$ 127	$ 124
Net gain (loss) from investment activities									322	302	(1,373)
Gain on disposition of assets, net									(84)	(2,163)	(6)
Other (loss) income, net									0	(22)	42
Total revenues	$ 2,802	$ 2,569	$ 3,423	$ 2,983	$ 2,482	$ 3,406	$ 4,353	$ 2,378	11,777	12,619	7,379
Interest expense									524	655	692
Selling, general and administrative									1,386	1,269	1,001
Total Expenses									11,499	10,791	9,752
Net income (loss)	$ 1,182	$ (147)	$ 588	$ 423	$ 197	$ 829	$ 1,725	$ (160)	2,046	2,591	(2,220)
Limited partners									2,063	2,382	(1,106)
General partner									(556)	48	(22)
Icahn Enterprises (Parent)
Equity in earnings (loss) of subsidiaries									1,844	2,765	(839)
Gain (loss) on extinguishment of debt									0	(12)	0
Interest expense									(337)	(323)	(289)
Net income (loss)									1,507	2,430	(1,128)
Limited partners									2,063	2,382	(1,106)
General partner									(556)	48	(22)
Icahn Enterprises Holdings (Parent)
Interest and dividend income									7	2	1
Net gain (loss) from investment activities									(389)	0	1
Gain on disposition of assets, net									23	(1)	0
Equity in earnings (loss) of subsidiaries									2,225	2,739	(818)
Other (loss) income, net									4	41	7
Total revenues									1,870	2,781	(809)
Interest expense									337	324	290
Selling, general and administrative									25	25	28
Total Expenses									362	349	318
Net income (loss)									1,508	2,432	(1,127)
Limited partners									2,085	2,408	(1,116)
General partner									$ (577)	$ 24	$ (11)

Schedule I Condensed Financial Information of Parent - Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income (loss)	$ 1,182	$ (147)	$ 588	$ 423	$ 197	$ 829	$ 1,725	$ (160)	$ 2,046	$ 2,591	$ (2,220)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net loss (gain) from securities transactions									476	(2,273)	(266)
Gain on disposition of assets, net									84	2,163	6
Other, net									123	(27)	58
Net cash used in operating activities									915	(1,428)	1,218
Other, net									(51)	(76)	(25)
Net cash provided by investing activities									2,590	413	(1,845)
Partnership contributions									0	612	1
Proceeds from other borrowings									1,268	1,334	1,908
Repayments of borrowings									(1,346)	(1,430)	(1,923)
Net cash (used in) provided by financing activities									(152)	718	58
Net change in cash and cash equivalents and restricted cash and restricted cash equivalents									3,427	27	(734)
Cash and cash equivalents and restricted cash and restricted cash equivalents	5,338				1,911				5,338	1,911	1,884	$ 2,618
Icahn Enterprises (Parent)
Net income (loss)									1,507	2,430	(1,128)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Amortization of deferred financing costs									1	1	1
Loss on extinguishment of debt, non-cash									0	(2)	0
Equity in (income) loss of subsidiary									(1,844)	(2,765)	839
Net cash used in operating activities									(336)	(332)	(288)
Net investment in subsidiaries									433	(204)	390
Net cash provided by investing activities									433	(204)	390
Partnership distributions									(97)	(81)	(103)
Partnership contributions									0	606	1
Proceeds from other borrowings									0	2,470	0
Repayments of borrowings									0	(2,450)	0
Debt issuance costs									0	(9)	0
Net cash (used in) provided by financing activities									(97)	536	(102)
Net change in cash and cash equivalents and restricted cash and restricted cash equivalents									0	0	0
Cash and cash equivalents and restricted cash and restricted cash equivalents	0				0				0	0	0	0
Icahn Enterprises Holdings (Parent)
Net income (loss)									1,508	2,432	(1,127)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net loss (gain) from securities transactions									389	0	(1)
Equity in (income) loss of subsidiary									(2,225)	(2,739)	818
Gain on disposition of assets, net									(23)	1	0
Depreciation and amortization									2	3	3
Other, net									(2)	(39)	8
Change in operating assets and liabilities									8	18	(6)
Net cash used in operating activities									(343)	(324)	(305)
Net investment in subsidiaries									238	509	421
Other, net									41	53	0
Net cash provided by investing activities									279	562	421
Partnership distributions									(97)	(81)	(103)
Partnership contributions									0	6	1
Proceeds from other borrowings									0	2,470	0
Repayments of borrowings									(21)	(2,450)	0
Debt issuance costs									0	(7)	0
Net cash (used in) provided by financing activities									(118)	(62)	(102)
Net change in cash and cash equivalents and restricted cash and restricted cash equivalents									(182)	176	14
Cash and cash equivalents and restricted cash and restricted cash equivalents	$ 59				$ 241				$ 59	$ 241	$ 65	$ 51

Schedule I Condensed Financial Information of Parent - Footnote (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Affiliate ownership interest	98.01%
Debt	$ 7,326	$ 7,372
Icahn Enterprises Holdings (Parent)
Affiliate ownership interest	99.00%
Debt	$ 5,509	5,532
Aggregate cash dividends (received from) paid to Parent by consolidated subsidiaries	238	509	$ 421
Icahn Enterprises (Parent)
Debt	5,505	5,507
Aggregate cash dividends (received from) paid to Parent by consolidated subsidiaries	433	(204)	$ 390
6.000% senior unsecured notes due 2020 \| Icahn Enterprises Holdings (Parent)
Debt	1,703	1,704
6.000% senior unsecured notes due 2020 \| Icahn Enterprises (Parent)
Debt	1,702	1,703
5.875% senior unsecured notes due 2022 \| Icahn Enterprises Holdings (Parent)
Debt	1,344	1,343
5.875% senior unsecured notes due 2022 \| Icahn Enterprises (Parent)
Debt	1,344	1,342
6.250% senior unsecured notes due 2022 \| Icahn Enterprises Holdings (Parent)
Debt	1,214	1,217
6.250% senior unsecured notes due 2022 \| Icahn Enterprises (Parent)
Debt	1,213	1,216
6.750% senior unsecured notes due 2024 \| Icahn Enterprises Holdings (Parent)
Debt	499	499
6.750% senior unsecured notes due 2024 \| Icahn Enterprises (Parent)
Debt	498	498
6.375% senior unsecured notes due 2025 \| Icahn Enterprises Holdings (Parent)
Debt	749	749
6.375% senior unsecured notes due 2025 \| Icahn Enterprises (Parent)
Debt	748	748
Mortgages payable \| Icahn Enterprises Holdings (Parent)
Debt	$ 0	$ 20
Icahn Enterprises G.P.
General partner ownership percentage in Icahn Enterprises	1.00%
Aggregate general partner ownership interest of parent and operating subsidiary	1.99%
Icahn Enterprises G.P. \| Icahn Enterprises Holdings (Parent)
General partner ownership percentage in Icahn Enterprises	1.00%
Icahn Enterprises G.P. \| Icahn Enterprises (Parent)
General partner ownership percentage in Icahn Enterprises	1.00%
Aggregate general partner ownership interest of parent and operating subsidiary	1.99%