Schedule I - Condensed Financial Information of Parent - Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Condensed Financial Statements, Captions [Line Items]
Total Assets	$ 14,215	$ 16,279
Accrued expenses and other liabilities	1,192	1,547
Debt	6,616	6,809
Total liabilities	10,789	11,658
Commitments and contingencies (Note 3)
Limited partners: Depositary units: 637,209,452 units issued and outstanding at December 31, 2025 and 522,736,315 units issued and outstanding at December 31, 2024	2,728	3,241
General partner	(786)	(775)
Total Liabilities and Equity	$ 14,215	$ 16,279
Limited partners: Depositary units issued	637,209,452	522,736,315	429,033,241
Limited partners: Depositary units outstanding	637,209,452	522,736,315
Icahn Enterprises (Parent)
Condensed Financial Statements, Captions [Line Items]
Investments in subsidiaries, net	$ 6,676	$ 7,232
Total Assets	6,676	7,232
Accrued expenses and other liabilities	70	67
Debt	4,664	4,699
Total liabilities	4,734	4,766
Commitments and contingencies (Note 3)
Limited partners: Depositary units: 637,209,452 units issued and outstanding at December 31, 2025 and 522,736,315 units issued and outstanding at December 31, 2024	2,728	3,241
General partner	(786)	(775)
Total equity	1,942	2,466
Total Liabilities and Equity	$ 6,676	$ 7,232
Limited partners: Depositary units issued	637,209,452	522,736,315
Limited partners: Depositary units outstanding	637,209,452	522,736,315