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	771	7	324	331	440	771	3	328	331	440
Other comprehensive loss	(71)	(1)	(53)	(54)	(17)	(71)	(1)	(53)	(54)	(17)
Partnership distributions	(123)	(2)	(121)	(123)	0	(123)	(1)	(122)	(123)	0
Proceeds from equity offerings	317	6	311	317	0	317	6	311	317	0
Dividends paid to non-controlling interests in subsidiaries	(214)	0	0	0	(214)	(214)	0	0	0	(214)
Proceeds from subsidiary equity offerings	991	2	87	89	902	991	1	88	89	902
Changes in subsidiary equity and other	2	0	27	27	(25)	2	0	27	27	(25)
Equity at Jun. 30, 2013	11,446	(232)	5,488	5,256	6,190	11,468	(285)	5,563	5,278	6,190
Equity at Mar. 31, 2013
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	76					76
Other comprehensive loss	(49)					(49)
Equity at Jun. 30, 2013	$ 11,446					$ 11,468