Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Icahn Enterprises Holdings	General partner	General partner Icahn Enterprises Holdings	Limited partners	Limited partners Icahn Enterprises Holdings	Total Partners' Equity	Total Partners' Equity Icahn Enterprises Holdings	Non-controlling Interests	Non-controlling Interests Icahn Enterprises Holdings
Equity at Dec. 31, 2017	$ 11,486	$ 11,513	$ (234)	$ (286)	$ 5,402	$ 5,481	$ 5,168	$ 5,195	$ 6,318	$ 6,318
Increase (Decrease) in Equity
Net loss	412	412	3	1	129	131	132	132	280	280
Other comprehensive loss	43	43	0	1	40	39	40	40	3	3
Partnership distributions	(310)	(310)	(6)	(3)	(304)	(307)	(310)	(310)	0	0
Investment segment contributions	280	280	0	0	0	0	0	0	280	280
Dividends and distributions to non-controlling interests in subsidiaries	(31)	(31)	0	0	0	0	0	0	(31)	(31)
Cumulative effect adjustment from adoption of accounting principle	(20)	(20)	0	0	(20)	(20)	(20)	(20)	0	0
Changes in subsidiary equity and other	2	2	0	0	(8)	(8)	(8)	(8)	10	10
Equity at Mar. 31, 2018	11,862	11,889	(237)	(287)	5,239	5,316	5,002	5,029	6,860	6,860
Equity at Dec. 31, 2018	12,980	13,008	(790)	(864)	7,350	7,452	6,560	6,588	6,420	6,420
Increase (Decrease) in Equity
Net loss	(664)	(664)	(8)	(4)	(386)	(390)	(394)	(394)	(270)	(270)
Other comprehensive loss	0	0
Partnership distributions	(391)	(391)	(8)	(4)	(383)	(387)	(391)	(391)	0	0
Dividends and distributions to non-controlling interests in subsidiaries	(30)	(30)	0	0	0	0	0	0	(30)	(30)
Changes in subsidiary equity and other	(243)	(243)	2	1	62	63	64	64	(307)	(307)
Equity at Mar. 31, 2019	$ 11,652	$ 11,680	$ (804)	$ (871)	$ 6,643	$ 6,738	$ 5,839	$ 5,867	$ 5,813	$ 5,813