Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net (loss) income	$ (664)	$ 412
Other comprehensive income (loss), net of tax:
Post-retirement benefits	1	11
Hedge instruments	0	(1)
Translation adjustments and other	(1)	33
Other comprehensive income, net of tax	0	43
Comprehensive (loss) income	(664)	455
Less: Comprehensive (loss) income attributable to non-controlling interests	(270)	283
Comprehensive (loss) income attributable to Icahn Enterprises	(394)	172
Limited partners
Net (loss) income	(386)	129
Other comprehensive income (loss), net of tax:
Other comprehensive income, net of tax		40
Comprehensive (loss) income attributable to Icahn Enterprises	(386)	169
General partner
Net (loss) income	(8)	3
Other comprehensive income (loss), net of tax:
Other comprehensive income, net of tax		0
Comprehensive (loss) income attributable to Icahn Enterprises	(8)	3
Icahn Enterprises Holdings
Net (loss) income	(664)	412
Other comprehensive income (loss), net of tax:
Post-retirement benefits	1	11
Hedge instruments	0	(1)
Translation adjustments and other	(1)	33
Other comprehensive income, net of tax	0	43
Comprehensive (loss) income	(664)	455
Less: Comprehensive (loss) income attributable to non-controlling interests	(270)	283
Comprehensive (loss) income attributable to Icahn Enterprises	(394)	172
Icahn Enterprises Holdings | Limited partners
Net (loss) income	(390)	131
Other comprehensive income (loss), net of tax:
Other comprehensive income, net of tax		39
Comprehensive (loss) income attributable to Icahn Enterprises	(390)	170
Icahn Enterprises Holdings | General partner
Net (loss) income	(4)	1
Other comprehensive income (loss), net of tax:
Other comprehensive income, net of tax		1
Comprehensive (loss) income attributable to Icahn Enterprises	$ (4)	$ 2