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Net Income Per LP Unit (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		0 Months Ended			6 Months Ended	0 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended		0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Depositary units [Member]	Apr. 22, 2014 Depositary units [Member]	Feb. 25, 2014 Depositary units [Member]	Jun. 30, 2014 Icahn Enterprises G.P. [Member]	May 06, 2014 Principal Owners and Affiliates [Member]	Jun. 30, 2014 Principal Owners and Affiliates [Member]	Feb. 28, 2013 Limited partners Depositary units [Member]	Jun. 30, 2014 Limited partners Depositary units [Member]	Jun. 30, 2014 General partner	May 05, 2014 Dividend Declared [Member] Limited partners Depositary units [Member]
Earnings Per LP Unit [Line Items]
Net income attributable to Icahn Enterprises	$ 489	$ 54	$ 460	$ 331
Net income attributable to Icahn Enterprises allocable to limited partners (98.01% allocation)	479	53	451	324
Basic income per LP unit	$ 4.06	$ 0.48	$ 3.85	$ 3.00
Basic weighted average LP units outstanding	118,000,000	110,000,000	117,000,000	108,000,000
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities				2
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities				1,000,000
Dilutive effect of unit distribution declared (income)		0		0
Dilutive effect of unit distribution declared (units)		1,000,000		0
Diluted income per LP unit	$ 4.06	$ 0.48	$ 3.85	$ 2.99
Diluted weighted average LP units outstanding	118,000,000	111,000,000	117,000,000	109,000,000
Units issues in connection with equity offering (ones)											3,174,604
Equity offering per share amount (ones)											$ 63.00
Underwriter option to purchase additional depositary units											476,191
Proceeds from equity offering			164	1,242								194
Proceeds from equity offerings			$ 0	$ 317									$ 4
General partner ownership percentage in Icahn Enterprises								1.00%
Distribution declared per depositary unit							$ 1.50							$ 1.50
Distribution Made to Limited Partner, Unit Distribution					1,555,003	1,574,448
Affiliate ownership interest in Icahn Enterprises									88.20%	88.20%

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