CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (500)	$ (2,468)	$ (1,791)
Other comprehensive income (loss), net of tax:
Translation adjustments	(7)	4	(2)
Post-retirement benefits and other	13	(5)	3
Other comprehensive income (loss), net of tax	6	(1)	1
Comprehensive loss	(494)	(2,469)	(1,790)
Less: Comprehensive income (loss) attributable to non-controlling interests	19	(815)	(693)
Comprehensive loss attributable to Icahn Enterprises	(513)	(1,654)	(1,097)
Comprehensive (loss) income attributable to Icahn Enterprises allocated to:
Limited Partner	(599)	(1,621)	(1,075)
General Partner	86	(33)	(22)
Comprehensive loss attributable to Icahn Enterprises	$ (513)	$ (1,654)	$ (1,097)