Schedule I - Condensed Financial Information of Parent - Statements of Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Interest expense	$ 554	$ 568	$ 666
Net loss	(1,012)	(25)	(500)
Limited partners	(670)	(179)	(604)
General partner	(14)	(4)	86
Icahn Enterprises (Parent)
Condensed Financial Statements, Captions [Line Items]
Interest expense	(286)	(290)	(323)
Gain (loss) on extinguishment of debt	13	(1)	3
Equity in loss of subsidiaries	(411)	108	(198)
Net loss	(684)	(183)	(518)
Limited partners	(670)	(179)	(604)
General partner	$ (14)	$ (4)	$ 86