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The cash outflow to repurchase long term senior debt that is not secured by collateral

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Potential aggregate sales proceeds from equity offering.

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The remaining authorized amount of repurchase of fixed-rate senior unsecured notes under repurchase program.

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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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Percentage investment held by members or limited partners of limited liability company (LLC) or 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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Net Income (Loss) Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions					1 Months Ended			3 Months Ended		9 Months Ended
	Nov. 03, 2025	Aug. 01, 2025	May 05, 2025	Feb. 24, 2025	Sep. 30, 2025	Jun. 30, 2025	Apr. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Nov. 06, 2024	May 09, 2023
Net Income (Loss) Per LP Unit [Line Items]
Net Income (Loss)								$ 287	$ 22	$ (300)	$ (347)
Net loss attributable to Icahn Enterprises allocated to limited partners (98.01% allocation)								$ 281	$ 22	$ (295)	$ (340)
Basic income (loss) per LP unit (in dollars per share)								$ 0.49	$ 0.05	$ (0.54)	$ (0.75)
Basic weighted average LP units outstanding (in shares)								575,000,000	477,000,000	548,000,000	452,000,000
Diluted income (loss) per LP unit (in dollars per share)								$ 0.49	$ 0.05	$ (0.54)	$ (0.75)
Diluted weighted average LP units outstanding (in shares)								575,000,000	477,000,000	548,000,000	452,000,000
Distribution declared per LP unit		$ 0.5	$ 0.5	$ 0.5
Aggregate cash distributions to depositary unit holders					$ 77	$ 76	$ 75
Partners' Capital Account, Units, Sale of Units								1,344,766		5,156,758
Proceeds from sale of interest in partnership unit								$ 11		$ 44
Aggregate gross sale proceeds					3			3		3
Fixed-rate senior unsecured notes, repurchase program authorized amount												$ 500	$ 500
Depositary units, repurchase program authorized amount					500			500		500			$ 500
Repurchased senior notes					50			50		50		$ 269
Total cash paid										46	$ 168
Remaining authorized amount					450			450		450
Subsequent event
Net Income (Loss) Per LP Unit [Line Items]
Distribution declared per LP unit	$ 0.5
Open market sale agreement entered into August 2024
Net Income (Loss) Per LP Unit [Line Items]
Aggregate gross sale proceeds					$ 400			$ 400		$ 400
Limited partners
Net Income (Loss) Per LP Unit [Line Items]
Units distributed to LP unitholders					25,614,344	23,351,314	23,349,786
Mr. Icahn and affiliates
Net Income (Loss) Per LP Unit [Line Items]
Units distributed to LP unitholders					24,149,325	22,033,036	21,962,413
Aggregate cash distributions to depositary unit holders					$ 50	$ 50	$ 50
Icahn Enterprises Holdings LP
Net Income (Loss) Per LP Unit [Line Items]
Affiliate ownership interest								98.01%	98.01%	98.01%	98.01%