Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Data (Unaudited) [Abstract]
Net sales	$ 3,340		$ 3,720		$ 3,979		$ 3,565		$ 3,982		$ 4,557		$ 4,867		$ 4,666		$ 14,604	$ 18,072	$ 17,785
Gross Profit	272		496		655		440		184		339		540		524
Revenues	2,565		3,212		4,984		4,511		3,366		4,422		6,379		4,990		15,272	19,157	20,682
Net (loss) income	(2,150)		(940)		541		422		(1,102)		(627)		1,123		77		(2,127)	(529)	2,444
Less: net loss (income) attributable to non-controlling interests	1,023		500		(329)		(261)		624		272		(634)		(106)		933	156	(1,419)
Net (loss) income attributable to Icahn Enterprises	$ (1,127)		$ (440)		$ 212		$ 161		$ (478)		$ (355)		$ 489		$ (29)		$ (1,194)	$ (373)	$ 1,025
Basic (loss) income per LP unit	$ (8.56)	[1]	$ (3.40)	[1]	$ 1.68	[1]	$ 1.28	[1]	$ (3.84)	[1]	$ (2.90)	[1]	$ 4.06	[1]	$ (0.24)	[1]	$ (9.29)	$ (3.08)	$ 9.14
Diluted (loss) income per LP unit	$ (8.56)	[1]	$ (3.40)	[1]	$ 1.68	[1]	$ 1.27	[1]	$ (3.84)	[1]	$ (2.90)	[1]	$ 4.06	[1]	$ (0.24)	[1]	$ (9.29)	$ (3.08)	$ 9.07

[1] Basic and diluted income (loss) per LP unit is computed separately for each quarter and therefore, the sum of such quarterly per LP unit amounts may differ from the total for the year.