CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net (loss) income	$ (211)	$ (1,400)	$ 326	$ (2,842)
Other comprehensive (loss) income, net of tax:
Translation adjustments	(5)	1	(4)
Post-retirement benefits and other		1	1	1
Other comprehensive (loss) income, net of tax	(5)	2	(3)	1
Comprehensive (loss) income	(216)	(1,398)	323	(2,841)
Less: Comprehensive (loss) income attributable to non-controlling interests	(64)	(686)	448	(1,042)
Comprehensive loss attributable to Icahn Enterprises	(152)	(712)	(125)	(1,799)
General partner
Other comprehensive (loss) income, net of tax:
Comprehensive loss attributable to Icahn Enterprises	(3)	(14)	(2)	(36)
Limited partners
Other comprehensive (loss) income, net of tax:
Comprehensive loss attributable to Icahn Enterprises	(149)	(698)	(123)	(1,763)
Icahn Enterprises Holdings
Net (loss) income	(211)	(1,400)	327	(2,842)
Other comprehensive (loss) income, net of tax:
Translation adjustments	(5)	1	(4)
Post-retirement benefits and other		1	1	1
Other comprehensive (loss) income, net of tax	(5)	2	(3)	1
Comprehensive (loss) income	(216)	(1,398)	324	(2,841)
Less: Comprehensive (loss) income attributable to non-controlling interests	(64)	(686)	448	(1,042)
Comprehensive loss attributable to Icahn Enterprises	(152)	(712)	(124)	(1,799)
Icahn Enterprises Holdings | General partner
Other comprehensive (loss) income, net of tax:
Comprehensive loss attributable to Icahn Enterprises	(1)	(7)	(1)	(18)
Icahn Enterprises Holdings | Limited partners
Other comprehensive (loss) income, net of tax:
Comprehensive loss attributable to Icahn Enterprises	$ (151)	$ (705)	$ (123)	$ (1,781)