Acquisition Pro Forma Table (Details) (CVR Energy, Inc. [Member], USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Revenues	$ 18,312	$ 19,556
Net income	666	2,244
Net income attributable to Icahn Enterprises	370	1,114
Net income per LP unit	$ 3.59	$ 12.41
Icahn Enterprises Holdings [Member]
Business Acquisition [Line Items]
Net income	667	2,200
Net income attributable to Icahn Enterprises	$ 371	$ 1,100