Schedule I - Condensed Financial Information of Parent - Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Total assets	$ 20,858	$ 27,914
Accrued expenses and other liabilities	1,596	1,981
Debt	7,207	7,096
Total liabilities	14,785	18,356
Commitments and contingencies (Note 3)
Limited partners: Depositary units: 353,572,182 units issued and outstanding at December 31, 2022 and 293,403,243 units issued and outstanding at December 31, 2021	3,969	4,647
General partner	(761)	(747)
Total Liabilities and Equity	$ 20,858	$ 27,914
Limited partners: Depositary units issued	429,033,241	353,572,182	293,403,243
Limited partners: Depositary units outstanding	429,033,241	353,572,182
Icahn Enterprises (Parent)
Condensed Financial Statements, Captions [Line Items]
Investments in subsidiaries, net	$ 8,092	$ 9,260
Total assets	8,092	9,260
Accrued expenses and other liabilities	37	51
Debt	4,847	5,309
Total liabilities	4,884	5,360
Commitments and contingencies (Note 3)
Limited partners: Depositary units: 353,572,182 units issued and outstanding at December 31, 2022 and 293,403,243 units issued and outstanding at December 31, 2021	3,969	4,647
General partner	(761)	(747)
Total equity	3,208	3,900
Total Liabilities and Equity	$ 8,092	$ 9,260
Limited partners: Depositary units issued	429,033,241	353,572,182
Limited partners: Depositary units outstanding	429,033,241	353,572,182