Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net (loss) income	$ (1,791)	$ 2,001	$ 2,632
Other comprehensive (loss) income, net of tax:
Translation adjustments	(2)	(86)	124
Post-retirement benefits and other	3	18	49
Other comprehensive income (loss), net of tax	1	(68)	173
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	(1,790)	1,933	2,805
Less: Comprehensive (loss) income attributable to non-controlling interests	(693)	512	194
Comprehensive (loss) income attributable to Icahn Enterprises	(1,097)	1,421	2,611
Limited partners
Net (loss) income	(1,076)	2,039	2,405
Other comprehensive (loss) income, net of tax:
Other comprehensive income (loss), net of tax	1	(60)	154
Comprehensive (loss) income attributable to Icahn Enterprises	(1,075)	1,979	2,559
General partner
Net (loss) income	(22)	(557)	49
Other comprehensive (loss) income, net of tax:
Other comprehensive income (loss), net of tax	0	(1)	3
Comprehensive (loss) income attributable to Icahn Enterprises	(22)	(558)	52
Icahn Enterprises Holdings
Net (loss) income	(1,790)	2,002	2,634
Other comprehensive (loss) income, net of tax:
Translation adjustments	(2)	(86)	124
Post-retirement benefits and other	3	18	49
Other comprehensive income (loss), net of tax	1	(68)	173
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	(1,789)	1,934	2,807
Less: Comprehensive (loss) income attributable to non-controlling interests	(693)	512	194
Comprehensive (loss) income attributable to Icahn Enterprises	(1,096)	1,422	2,613
Icahn Enterprises Holdings | Limited partners
Net (loss) income	(1,086)	2,060	2,431
Other comprehensive (loss) income, net of tax:
Other comprehensive income (loss), net of tax	1	(60)	155
Comprehensive (loss) income attributable to Icahn Enterprises	(1,085)	2,000	2,587
Icahn Enterprises Holdings | General partner
Net (loss) income	(11)	(577)	25
Other comprehensive (loss) income, net of tax:
Other comprehensive income (loss), net of tax	0	(1)	2
Comprehensive (loss) income attributable to Icahn Enterprises	$ (11)	$ (578)	$ 26