Income Taxes Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Income Tax Contingency [Line Items]
Book basis of net assets	$ 6,092	$ 4,669
Book/tax basis difference	(2,248)	(1,840)
Tax basis of net assets	3,844	2,829
Current Income Tax Expense (Benefit)	(39)	(157)		(46)
Deferred Income Tax Expense (Benefit)	157	238		12
Income tax benefit (expense)	118	81		(34)
Deferred tax assets, Property, pland and equipment	141	146
Deferred tax asset, net operating loss	1,137	1,163
deferred tax asset, Tax credits	166	134
Deferred tax asset, Post-employment benefits, including pensions	303	441
Deferred tax asset, Reoganization costs	27	51
Deferred tax asset, Other	242	311
Deferred Tax Assets, Gross	2,016	2,246
Deferred Tax Assets, Valuation Allowance	(1,216)	(1,550)
Deferred Tax Assets, Net of Valuation Allowance	800	696
Deferred Tax Liabilities, Property, Plant and Equipment	(216)	(644)
Deferred Tax Liabilities, Intangible Assets	(187)	(377)
Deferred tax liability, Investment in partnerships	(1,242)	(303)
Deferred tax liabilities, Investment in subsidiaries	(307)	(307)
Deferred Tax Liabilities, Other	(13)	(27)
Deferred Tax Liabilities, Gross	(1,965)	(1,658)
deferred tax liabilities, net of deferred tax assets	(1,165)	(962)
Deferred tax asset	229	373
Deferred tax liability	1,394	1,335
Changes in valuation allowance on deferred tax assets	334	147
Cash and cash equivalents	3,262	3,108		2,328	2,988
Income tax expense related to interest and penalties related to unrecognized tax benefits	8	3		3
WPI [Member]
Income Tax Contingency [Line Items]
Changes in valuation allowance on deferred tax assets		31
ARI [Member]
Income Tax Contingency [Line Items]
Undistributed Earnings of Foreign Subsidiaries	3	2
Deferred tax asst for tax loss carryforwrds and credits, subject to expiration		4
American Entertainment Properties Corp. [Member]
Income Tax Contingency [Line Items]
Deferred Tax Assets, Valuation Allowance	(52)
Changes in valuation allowance on deferred tax assets		221
Deferred tax asst for tax loss carryforwrds and credits, subject to expiration	728
Icahn Enterprises Holdings [Member]
Income Tax Contingency [Line Items]
Book basis of net assets	6,114	4,691
Book/tax basis difference	(2,248)	(1,840)
Tax basis of net assets	3,866	2,851
Income tax benefit (expense)	118	81		(34)
Deferred tax liability	1,394	1,335
Cash and cash equivalents	3,262	3,108		2,328	2,988
Federal-Mogul [Member]
Income Tax Contingency [Line Items]
Deferred Tax Assets, Valuation Allowance	846
Undistributed Earnings of Foreign Subsidiaries	824
Deferred tax asst for tax loss carryforwrds and credits, subject to expiration	887
Domestic deferred tax asst for tax loss carryforwards and credits, subject to expiration	497
Tropicana [Member]
Income Tax Contingency [Line Items]
Deferred tax asst for tax loss carryforwrds and credits, subject to expiration	185
Viskase [Member]
Income Tax Contingency [Line Items]
Changes in valuation allowance on deferred tax assets	55
Undistributed Earnings of Foreign Subsidiaries	53
Domestic deferred tax asst for tax loss carryforwards and credits, subject to expiration	95
United Kingdom | Federal-Mogul [Member]
Income Tax Contingency [Line Items]
Foreign deferred tax asst for tax loss carryforwards and credits, subject to expiration	200
Other foreign jurisdictions [Member] | Federal-Mogul [Member]
Income Tax Contingency [Line Items]
Foreign deferred tax asst for tax loss carryforwards and credits, subject to expiration	190
Foreign Tax Authority [Member] | Viskase [Member]
Income Tax Contingency [Line Items]
Foreign deferred tax asst for tax loss carryforwards and credits, subject to expiration	15
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Current Income Tax Expense (Benefit)	(61)	(53)		(45)
Deferred Income Tax Expense (Benefit)	11	47		8
Domestic Tax Authority [Member]
Income Tax Contingency [Line Items]
Current Income Tax Expense (Benefit)	22	(104)		(1)
Deferred Income Tax Expense (Benefit)	146	191		4
Federal-Mogul [Member]
Income Tax Contingency [Line Items]
Changes in valuation allowance on deferred tax assets		399
Energy Segment [Member]
Income Tax Contingency [Line Items]
Income tax benefit (expense)	195	182	[1]
Cash and cash equivalents	842	896
Energy Segment [Member] | Kansas | American Entertainment Properties Corp. [Member]
Income Tax Contingency [Line Items]
Domestic tax credits	5
Energy Segment [Member] | Oklahoma | American Entertainment Properties Corp. [Member]
Income Tax Contingency [Line Items]
Domestic tax credits	9
Food Packaging Segment [Member]
Income Tax Contingency [Line Items]
Income tax benefit (expense)	(51)	(5)		(5)
Changes in valuation allowance on deferred tax assets	55
Cash and cash equivalents	19	31
Other Segments [Member]
Income Tax Contingency [Line Items]
Changes in valuation allowance on deferred tax assets		221
Automotive Segment [Member]
Income Tax Contingency [Line Items]
Income tax benefit (expense)	(180)	29		(17)
Changes in valuation allowance on deferred tax assets	279
Cash and cash equivalents	761	467
Cash and cash equivalents held by foreign subsidiaries	224
Release of deferred tax allowance	$ 287
Minimum [Member] | ARI [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates		2014
Minimum [Member] | American Entertainment Properties Corp. [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates		2026
Minimum [Member] | Tropicana [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates	2028
Minimum [Member] | United States | Federal-Mogul [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates	2014
Minimum [Member] | United States | Viskase [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates	2024
Maximum [Member] | ARI [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates		2031
Maximum [Member] | American Entertainment Properties Corp. [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates		2031
Maximum [Member] | United States | Federal-Mogul [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards, Expiration Dates	2032

[1] We consolidated CVR effective May 4, 2012.