Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions						3 Months Ended		6 Months Ended
	Aug. 05, 2015	Jun. 30, 2015	May. 05, 2015	Apr. 22, 2015	Feb. 20, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per LP Unit [Line Items]
Net income attributable to Icahn Enterprises						$ 212	$ 489	$ 373	$ 460
Net income attributable to Icahn Enterprises allocable to limited partners (98.01% allocation)						$ 208	$ 479	$ 366	$ 451
Basic and diluted income per LP unit						$ 1.68	$ 4.06	$ 2.95	$ 3.85
Basic and diluted weighted average LP units outstanding						124,000,000	118,000,000	124,000,000	117,000,000
Distribution declared per depositary unit			$ 1.50		$ 1.50
Depositary units [Member]
Earnings Per LP Unit [Line Items]
Distribution Made to Limited Partner, Unit Distribution		1,825,930		1,713,935
Mr. Icahn and his affiliates [Member]
Earnings Per LP Unit [Line Items]
Affiliate ownership interest in Icahn Enterprises								88.70%
Ownership percentage [Member] | Mr. Icahn and his affiliates [Member]
Earnings Per LP Unit [Line Items]
Affiliate ownership interest in Icahn Enterprises	88.70%