Earnings Per LP Unit [Line Items]

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- Definition

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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- Definition

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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- Definition

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

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- Definition

Per unit of ownership amount after tax of income (loss) from continuing operations available to limited partnership (LP) unit-holder and units that would have been outstanding assuming the issuance of limited partner units for dilutive potential units outstanding.

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- Definition

Per unit of ownership amount after tax of income (loss) from continuing operations available to limited partnership (LP) unit-holder in a publicly trade limited partnership (LP) or master limited partnership (MLP).

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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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- Definition

Per unit of ownership amount after tax of gain (loss) on disposal of discontinued operations available to limited partnership (LP) unit-holder.

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Per unit of ownership amount after tax of gain (loss) on disposal of discontinued operations available to limited partnership (LP) unit-holder and units that would have been outstanding assuming the issuance of limited partner units for all dilutive potential units outstanding.

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- Definition

The number of limited partner units issued.

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Per unit of ownership amount after tax of income (loss) available to limited partnership (LP) unit-holder and units that would have been outstanding assuming the issuance of limited partner units for dilutive potential units outstanding.

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Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) unit-holder.

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- Definition

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

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- Definition

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

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period.

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Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended								12 Months Ended
	May 02, 2019	Jan. 31, 2017	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	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											$ (1,066)	$ (238)	$ 2,297
Net (loss) income attributable to Icahn Enterprises from discontinued operations											(32)	1,720	157
Less: net loss attributable to Icahn Enterprises from discontinued operations allocated 100% to general partner											0	598	0
Net (loss) income attributable to Icahn Enterprises from discontinued operations allocable to limited partners											$ (32)	$ 2,318	$ 157
Basic income (loss) per LP unit:
Continuing operations			$ (0.70)	$ (0.24)	$ (2.37)	$ (2.02)	$ (2.30)	$ (0.24)	$ 0.81	$ 0.55	$ (5.23)	$ (1.29)	$ 13.98
Discontinued operations			(0.04)	0.00	(0.12)	0.00	10.31	0.88	0.85	0.19	(0.15)	12.62	0.96
Basic income (loss) per LP unit			(0.74)	(0.24)	(2.49)	(2.02)	8.01	0.64	1.66	0.74	$ (5.38)	$ 11.33	$ 14.94
Basic weighted average LP units outstanding											200,000,000	180,000,000	161,000,000
Diluted income (loss) per LP unit
Continuing operations			(0.70)	(0.24)	(2.37)	(2.02)	(2.30)	(0.24)	0.81	0.55	$ (5.23)	$ (1.29)	$ 13.98
Discontinued operations			(0.04)	0.00	(0.12)	0.00	10.31	0.88	0.85	0.19	(0.15)	12.62	0.96
Diluted income (loss) per LP unit			$ (0.74)	$ (0.24)	$ (2.49)	$ (2.02)	$ 8.01	$ 0.64	$ 1.66	$ 0.74	$ (5.38)	$ 11.33	$ 14.94
Diluted weighted average LP units outstanding											200,000,000	180,000,000	161,000,000
Limited partners: Depositary units issued			214,078,558				191,366,097				214,078,558	191,366,097	173,564,307	144,741,149
Units distributed to LP unitholders											21,898,853	17,778,950	17,644,152
2017 LTIP units vested											19,259	22,840	7,902
Partners' Capital Account, Units, Sale of Units											794,349		11,171,104
Potential aggregate sales proceeds from equity offering	$ 400
Proceeds from Sale of Interest in Partnership Unit											$ 54
Mr. Icahn and affiliates
Diluted income (loss) per LP unit
Limited partners: Depositary units issued			197,049,652				175,441,588				197,049,652	175,441,588	157,898,582	129,999,050
Units distributed to LP unitholders											21,608,064	17,543,006	17,374,427
2017 LTIP units vested											0	0	0
Partners' Capital Account, Units, Sale of Units											0		10,525,105
Public unitholders
Diluted income (loss) per LP unit
Limited partners: Depositary units issued			17,028,906				15,924,509				17,028,906	15,924,509	15,665,725	14,742,099
Units distributed to LP unitholders											290,789	235,944	269,725
2017 LTIP units vested											19,259	22,840	7,902
Partners' Capital Account, Units, Sale of Units											794,349		645,999
General partner
Diluted income (loss) per LP unit
Depositary units issued (value)		$ 12
Limited partners
Diluted income (loss) per LP unit
Depositary units issued (value)		$ 600
Limited partners
Earnings Per LP Unit [Line Items]
Net (loss) income attributable to Icahn Enterprises from continuing operations											$ (1,045)	$ (233)	$ 2,251
Net (loss) income attributable to Icahn Enterprises from discontinued operations											$ (31)	$ 2,272	$ 154