CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income (loss)	$ 599	$ (2,306)
Other comprehensive loss, net of tax:
Translation adjustments	(1)	(3)
Other comprehensive loss, net of tax	(1)	(3)
Comprehensive income (loss)	598	(2,309)
Less: Comprehensive income (loss) attributable to non-controlling interests	437	(922)
Comprehensive income (loss) attributable to Icahn Enterprises	161	(1,387)
Limited partners
Net income (loss)	159	(1,356)
Other comprehensive loss, net of tax:
Other comprehensive loss, net of tax	(1)	(3)
Comprehensive income (loss) attributable to Icahn Enterprises	158	(1,359)
General partner
Net income (loss)	3	(28)
Other comprehensive loss, net of tax:
Comprehensive income (loss) attributable to Icahn Enterprises	3	(28)
Icahn Enterprises Holdings
Net income (loss)	599	(2,306)
Other comprehensive loss, net of tax:
Translation adjustments	(1)	(3)
Other comprehensive loss, net of tax	(1)	(3)
Comprehensive income (loss)	598	(2,309)
Less: Comprehensive income (loss) attributable to non-controlling interests	437	(922)
Comprehensive income (loss) attributable to Icahn Enterprises	161	(1,387)
Icahn Enterprises Holdings | Limited partners
Net income (loss)	160	(1,370)
Other comprehensive loss, net of tax:
Other comprehensive loss, net of tax	(1)	(3)
Comprehensive income (loss) attributable to Icahn Enterprises	159	(1,373)
Icahn Enterprises Holdings | General partner
Net income (loss)	2	(14)
Other comprehensive loss, net of tax:
Comprehensive income (loss) attributable to Icahn Enterprises	$ 2	$ (14)