Other Income (Loss), Net (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	$ 21	$ (175)	$ (72)
Loss on extinguishment of debt
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	(10)	0
Realized and unrealized loss on derivatives, net
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	57	(190)	0
Tax settlement loss
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(23)	0	0
Dividend expense related to securities sold, not yet purchased
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	(4)	(86)
Net (loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(56)	5	1
Appreciation on deferred management fee
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	0	(13)
Equity earnings from non-consolidated affiliates
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	26	35	30
Foreign currency translation loss
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(12)	(9)	(9)
Other
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	29	(2)	5
Settlement with Taxing Authority [Member]
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(23)
Icahn Enterprises Holdings [Member]
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	21	(175)	(72)
Icahn Enterprises Holdings [Member] | Loss on extinguishment of debt
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	(10)	0
Icahn Enterprises Holdings [Member] | Realized and unrealized loss on derivatives, net
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	57	(190)	0
Icahn Enterprises Holdings [Member] | Tax settlement loss
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(23)	0	0
Icahn Enterprises Holdings [Member] | Dividend expense related to securities sold, not yet purchased
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	(4)	(86)
Icahn Enterprises Holdings [Member] | Net (loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(56)	5	1
Icahn Enterprises Holdings [Member] | Appreciation on deferred management fee
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	0	0	(13)
Icahn Enterprises Holdings [Member] | Equity earnings from non-consolidated affiliates
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	26	35	30
Icahn Enterprises Holdings [Member] | Foreign currency translation loss
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(12)	(9)	(9)
Icahn Enterprises Holdings [Member] | Other
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	29	(2)	5
France [Member] | Net (loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(48)
Canada and UK [Member] | Net (loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(6)
United States | Net (loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(6)
Automotive Segment [Member]
Component of Other Income (Loss), Net [Line Items]
Other (loss) income, net	(32)	8	21
United States Welfare Benefit Plan [Member] | Automotive Segment [Member]
Component of Other Income (Loss), Net [Line Items]
Curtailment gain	38	51	1
United States Welfare Benefit Plan [Member] | Automotive Segment [Member] | Other income, net
Component of Other Income (Loss), Net [Line Items]
Curtailment gain	$ 19