(Details) (USD $)			9 Months Ended	0 Months Ended	9 Months Ended			9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Icahn Enterprises G.P. [Member]	Aug. 05, 2013 Principal Owners and Affiliates [Member]	Sep. 30, 2013 Principal Owners and Affiliates [Member]	Sep. 30, 2013 Restricted cash [Member]	Dec. 31, 2012 Restricted cash [Member]	Sep. 30, 2013 Icahn Enterprises G.P. [Member]	Sep. 30, 2013 Icahn Enterprises Holdings [Member]	Dec. 31, 2012 Icahn Enterprises Holdings [Member]
Entity Information [Line Items]
Percentage of equity ownership in operating subsidiary									99.00%
General partner ownership percentage in Icahn Enterprises			1.00%
General partner ownership interest in Icahn Enterprises Holdings								1.00%
Aggregate general partner ownership interest of parent and operating subsidiary			1.99%
Affiliate ownership interest in Icahn Enterprises (in units)					100,436,406
Affiliate ownership interest in Icahn Enterprises				89.40%	89.40%
Debt	$ 8,155,000,000	$ 8,548,000,000							$ 8,149,000,000	$ 8,540,000,000
Fair value of long-term debt	8,300,000,000	8,600,000,000
Cash held at consolidated affiliated partnerships and restricted cash	$ 1,430,000,000	$ 1,419,000,000				$ 1,400,000,000	$ 700,000,000		$ 1,430,000,000	$ 1,419,000,000