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Subsequent Events (Details) (USD $) In Millions, except Per Share data, unless otherwise specified			0 Months Ended
	Apr. 30, 2013 IEP	Mar. 31, 2013 IEP	Apr. 26, 2013 Cash distribution Nitrogen fertilizer plant	Apr. 30, 2013 Cash distribution CVR Refining, LP	Apr. 30, 2013 Subsequent event Dividend declared	Apr. 30, 2013 Subsequent event IEP Dividend declared
Dividend
Dividend expected on annualized basis (in dollars per share)					$ 0.75
Dividend declared					$ 65.1	$ 53.4
Ownership percentage held by controlling stockholder	82.00%	82.00%
Distribution
Cash distribution (in dollars per unit)			$ 0.610	$ 1.58
Aggregate cash distributions paid			44.6	233.2
Distributions from subsidiaries			$ 31.1	$ 189.6

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