Aggregate cash distributions to depositary unit holders.

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Earnings Per LP Unit [Line Items]

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- Definition

Potential aggregate sales proceeds from equity offering.

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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Aggregate amount of net income allocated to limited partners.

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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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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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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							3 Months Ended		9 Months Ended
	Aug. 06, 2021	Aug. 04, 2021	May 05, 2021	Feb. 26, 2021	Feb. 24, 2021	May 02, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per LP Unit [Line Items]
Net loss attributable to Icahn Enterprises							$ (148)	$ (714)	$ (122)	$ (1,799)
Net loss attributable to Icahn Enterprises allocated to limited partners (98.01% allocation)							$ (145)	$ (700)	$ (120)	$ (1,763)
Basic loss per LP unit
Basic loss per LP unit							$ (0.55)	$ (3.14)	$ (0.47)	$ (8.12)
Basic weighted average LP units outstanding							266,000,000	223,000,000	253,000,000	217,000,000
Diluted loss per LP unit
Diluted loss per LP unit							$ (0.55)	$ (3.14)	$ (0.48)	$ (8.12)
Diluted weighted average LP units outstanding							266,000,000	223,000,000	253,000,000	217,000,000
Potential aggregate sales proceeds from equity offering	$ 400			$ 400		$ 400			$ 180
LP units sold							4,164,179	637,352	10,783,098	1,118,596
Proceeds from sale of LP units							$ 220	$ 34	$ 604	$ 60
Brett Icahn \| Incentive Plan 2017
Diluted loss per LP unit
LP units distributed							18,491		18,491
Limited partners
Diluted loss per LP unit
Distribution declared per LP unit		$ 2.00	$ 2.00		$ 2.00
LP units distributed									26,465,134
Aggregate cash distributions to depositary unitholders							$ 91		$ 91
Limited partners \| Mr. Icahn and affiliates
Diluted loss per LP unit
LP units distributed									25,372,644