Net Income Per LP Unit (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended																12 Months Ended				0 Months Ended						1 Months Ended		0 Months Ended						12 Months Ended	0 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended	1 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011	Jan. 13, 2014 Common Stock [Member]	Oct. 09, 2013 Common Stock [Member]	Jul. 05, 2013 Common Stock [Member]	Apr. 16, 2013 Common Stock [Member]	Feb. 11, 2013 Common Stock [Member]	Dec. 31, 2013 Common Stock [Member]	Jan. 20, 2012 Depositary Units [Member]	Dec. 27, 2011 Depositary Units [Member]	Dec. 09, 2013 Limited partners Common Stock [Member]	Nov. 01, 2013 Limited partners Common Stock [Member]	Aug. 06, 2013 Limited partners Common Stock [Member]	Jun. 12, 2013 Limited partners Common Stock [Member]	Apr. 29, 2013 Limited partners Common Stock [Member]	Feb. 28, 2013 Limited partners Common Stock [Member]	Dec. 31, 2013 Limited partners Common Stock [Member]	Feb. 25, 2014 Limited partners Dividend Declared [Member] Common Stock [Member]	Dec. 31, 2013 General partner	Dec. 31, 2013 Icahn Enterprises G.P. [Member]	Feb. 28, 2014 Principal Owners and Affiliates [Member]	Dec. 31, 2013 Principal Owners and Affiliates [Member]	Jan. 20, 2012 Principal Owners and Affiliates [Member] Depositary Units [Member]
Earnings Per LP Unit [Line Items]
Net income (loss) attributable to Icahn Enterprises																	$ 1,025	$ 396		$ 750
Net income attributable to parent, allocated to general partner before traditional parntership allocation																	0	(9)	[1]	0
Net income attributable to Icahn Enterprises, subject to allocation amongst partners																	1,025	387		750
Limited partners																	1,005	379		735
Income attributable to Icahn Enterprises allocable to limited partners (98.01% allocation)																				735
Basic income per LP unit	$ 1.91	[2]	$ 4.13	[2]	$ 0.48	[2]	$ 2.56	[2]	$ 0.05	[2],[3]	$ 0.75	[2],[3]	$ 2.44	[2],[3]	$ 0.48	[2],[3]	$ 9.14	$ 3.72		$ 8.35
Basic weighted average LP units outstanding																	110,000,000	102,000,000		88,000,000
Dilutive securities, effect on earnings per unit from converison of debt securities																	2	0		23
Dilutive effect of variable rate convertible notes, Units																	1,000,000	0		5,000,000
Diluted income per LP unit	$ 1.90	[2]	$ 4.10	[2]	$ 0.48	[2]	$ 2.50	[2]	$ 0.05	[2],[3]	$ 0.75	[2],[3]	$ 2.37	[2],[3]	$ 0.48	[2],[3]	$ 9.07	$ 3.72		$ 8.15
Diluted weighted average LP units outstanding																	111,000,000	102,000,000		93,000,000
Antidilutive securities excluded from computation of earnings per unit																		5,000,000
Rights received per depositary unit held																												0.15881
Rights' subscription price per depositary unit																												$ 36.7933
Aggregate depositary units distributed in connection with rights offering																											13,590,238														12,995,584
Proceeds from rights offering																											500
Stock Issued During Period, Shares, New Issues																													2,000,000			1,600,000		3,174,604
Development Stage Entities, Equity Issuance, Per Share Amount																													$ 135.00			$ 75.54		$ 63.00
Underwriter option to purchase additional depositary units																													300,000			240,000		476,191
Proceeds from Issuance or Sale of Equity																																			581
Partnership contributions																	593	513		0																	12
General partner ownership percentage in Icahn Enterprises																																						1.00%
Common Stock, Dividends, Per Share, Declared																									$ 1.00					$ 1.25	$ 1.25		$ 1.00			$ 1.50
Units issued as a unit distribution																					1,001,617	1,515,739	1,237,191	1,521,962
Affiliate ownership interest in Icahn Enterprises																																							88.00%	87.90%
Dividends Payable																										$ 142

[1] Amount represents net income allocable to the general partner for the period May 5, 2012 through August 23, 2012, the period in which Mr. Icahn and his affiliates' ownership in IEP Energy, other than Icahn Enterprises' ownership, were considered under common control. On August 24, 2012, Mr. Icahn and his affiliates contributed this interest to us in exchange for our depositary units.

[2] Basic and diluted income per LP unit is computed separately for each quarter and therefore, the sum of such quarterly per LP unit amounts may differ from the total for the year.

[3] We consolidated the results of CVR effective May 5, 2012.