Schedule I Condensed Financial Information of Parent - Statements of Operations (Details) - USD ($) $ 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
Interest and dividend income									$ 194	$ 217	$ 194
Loss on extinguishment of debt									(2)	(162)	0
Other income, net									75	182	21
Total Revenues	$ 2,565	$ 3,212	$ 4,984	$ 4,511	$ 3,366	$ 4,422	$ 6,379	$ 4,990	15,272	19,157	20,682
Interest expense									(1,154)	(847)	(560)
Selling, general and administrative									1,908	1,625	1,417
Total Expenses									17,331	19,789	18,356
Net (loss) income	$ (2,150)	$ (940)	$ 541	$ 422	$ (1,102)	$ (627)	$ 1,123	$ 77	(2,127)	(529)	2,444
Limited partners									(1,170)	(366)	1,005
General partner									(24)	(7)	20
Icahn Enterprises Holdings [Member]
Interest and dividend income									194	217	194
Loss on extinguishment of debt									(2)	(162)	0
Other income, net									75	182	21
Total Revenues									15,272	19,157	20,682
Interest expense									(1,153)	(846)	(560)
Selling, general and administrative									1,908	1,625	1,417
Total Expenses									17,330	19,788	18,356
Net (loss) income									(2,126)	(528)	2,444
Limited partners									(1,181)	(368)	1,015
General partner									(12)	(4)	10
Parent Company [Member]
Loss on extinguishment of debt									0	(108)	0
Equity in (loss) earnings of subsidiaries									(905)	27	1,327
Interest expense									(289)	(292)	(302)
Net (loss) income									(1,194)	(373)	1,025
Limited partners									(1,170)	(366)	1,005
General partner									(24)	(7)	20
Parent Company [Member] | Icahn Enterprises Holdings [Member]
Interest and dividend income									0	1	0
Loss on extinguishment of debt									0	(108)	0
Equity in (loss) earnings of subsidiaries									(903)	28	1,342
Other income, net									28	20	15
Total Revenues									(875)	(59)	1,357
Interest expense									(291)	(290)	(305)
Selling, general and administrative									27	23	27
Total Expenses									318	313	332
Net (loss) income									(1,193)	(372)	1,025
Limited partners									(1,181)	(368)	1,015
General partner									$ (12)	$ (4)	$ 10