Consolidated Statement of Changes in Equity (USD $) In Millions, unless otherwise specified	Total	General partner	Limited partners	Parent [Member]	Non-controlling Interests	Icahn Enterprises Holdings [Member]	Icahn Enterprises Holdings [Member] General partner	Icahn Enterprises Holdings [Member] Limited partners	Icahn Enterprises Holdings [Member] Parent [Member]	Icahn Enterprises Holdings [Member] Non-controlling Interests
Equity at Dec. 31, 2012	$ 9,773	$ (244)	$ 4,913	$ 4,669	$ 5,104	$ 9,795	$ (293)	$ 4,984	$ 4,691	$ 5,104
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	1,991	16	787	803	1,188	1,991	8	795	803	1,188
Other comprehensive loss	(20)	0	(13)	(13)	(7)	(20)	0	(13)	(13)	(7)
Partnership distributions	(172)	(3)	(169)	(172)	0	(172)	(2)	(170)	(172)	0
Investment segment contributions	45	0	0	0	45	45	0	0	0	45
Proceeds from equity offerings	317	6	311	317	0	317	6	311	317	0
Distributions paid to non-controlling interests in subsidiaries	(342)	0	0	0	(342)	(342)	0	0	0	(342)
Proceeds from subsidiary equity offerings	1,054	2	88	90	964	1,054	1	89	90	964
Other	1	0	26	26	(25)	1	0	26	26	(25)
Equity at Sep. 30, 2013	12,647	(223)	5,943	5,720	6,927	12,669	(280)	6,022	5,742	6,927
Equity at Jun. 30, 2013
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	1,220					1,220
Other comprehensive loss	51					51
Equity at Sep. 30, 2013	$ 12,647					$ 12,669