Aggregate cash distributions to depositary unit holders.

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Earnings Per LP Unit [Line Items]

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Net income (loss) attributable to Icahn Enterprises from discontinued operations allocable to limited partners

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Net loss attributable to Icahn Enterprises from discontinued operations special allocation

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Total units transferred during the year. All partners include general, limited and preferred partners.

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Potential aggregate sales proceeds from equity offering

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Number of units distributed for payment of a unit distribution to unit-holder of limited partnership (LP).

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Amount after tax of income (loss) from continuing operations attributable to the parent.

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The amount of net income (loss) from continuing operations per each basic and diluted limited partnership and general partnership unit when the per unit amount is the same for both basic and diluted units.

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Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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The amount of income (loss) derived from discontinued operations during the period, net of related tax effect, per each basic and diluted limited partnership and general partnership unit when the per unit amount is the same for both basic and diluted units.

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The amount of net income or loss for the period per each limited partnership and general partnership unit in instances when basic and diluted earnings per unit are the same amount and aggregated on the face of the financial statements. Basic earnings per unit is the amount of net income or loss for the period per unit outstanding during the reporting period. Diluted earnings per unit includes the amount of net income or loss for the period available to each limited and general partnership unit outstanding during the reporting period and to each unit that would have been outstanding assuming the issuance of units for all dilutive potential units outstanding during the reporting period.

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Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners.

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The proceeds from the sale of an interest in a unit of partnership.

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The average number of limited partnership and general partnership units issued and outstanding that are used in calculating basic and diluted earnings per limited partnership and general partnership unit.

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Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended				12 Months Ended
	May 02, 2019	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per LP Unit [Line Items]
Net (loss) income attributable to Icahn Enterprises from continuing operations						$ (1,653)	$ (1,066)	$ (238)
Net (loss) income attributable to Icahn Enterprises from discontinued operations							(32)	1,720
Less: net loss attributable to Icahn Enterprises from discontinued operations allocated 100% to general partner								598
Net (loss) income attributable to Icahn Enterprises from discontinued operations allocable to limited partners							$ (32)	$ 2,318
Basic and diluted (loss) income per LP unit:
Continuing operations						$ (7.33)	$ (5.23)	$ (1.29)
Discontinued operations							(0.15)	12.62
Basic and diluted (loss) income per LP unit						$ (7.33)	$ (5.38)	$ 11.33
Basic and diluted weighted average LP units outstanding						221,000,000	200,000,000	180,000,000
Limited partners: Depositary units issued		241,338,835				241,338,835	214,078,558	191,366,097	173,564,307
Units distributed to LP unitholders						25,352,178	21,898,853	17,778,950
2017 LTIP units vested							19,259	22,840
Partners' Capital Account, Units, Sale of Units						1,908,099	794,349
Aggregate cash distributions to depositary unit holders		$ 33	$ 31	$ 30	$ 422	$ 516
Potential aggregate sales proceeds from equity offering	$ 400					244
Proceeds from Sale of Interest in Partnership Unit						101	$ 55
Limited partners
Earnings Per LP Unit [Line Items]
Net (loss) income attributable to Icahn Enterprises from continuing operations						$ (1,620)	(1,045)	$ (233)
Net (loss) income attributable to Icahn Enterprises from discontinued operations							$ (31)	$ 2,272
Mr. Icahn and affiliates
Basic and diluted (loss) income per LP unit:
Limited partners: Depositary units issued		221,749,462				221,749,462	197,049,652	175,441,588	157,898,582
Units distributed to LP unitholders						24,902,568	21,608,064	17,543,006
Mr. Icahn and affiliates \| Brett Icahn
Basic and diluted (loss) income per LP unit:
Partners' Capital Account, Units, Trasfer of Units						(202,758)
Public unitholders
Basic and diluted (loss) income per LP unit:
Limited partners: Depositary units issued		19,589,373				19,589,373	17,028,906	15,924,509	15,665,725
Units distributed to LP unitholders						449,610	290,789	235,944
2017 LTIP units vested							19,259	22,840
Partners' Capital Account, Units, Sale of Units						1,908,099	794,349
Public unitholders \| Brett Icahn
Basic and diluted (loss) income per LP unit:
Partners' Capital Account, Units, Trasfer of Units						202,758