Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net income attributable to CVR Energy stockholders	$ 7.9	$ 44.0	$ 218.3	$ 392.4
Weighted-average shares of common stock outstanding - Basic	86.8	86.8	86.8	86.8
Weighted-average shares of common stock outstanding - Diluted	86.8	86.8	86.8	86.8
Basic earnings per share (in dollars per share)	$ 0.09	$ 0.51	$ 2.51	$ 4.52
Diluted earnings per share (in dollars per share)	$ 0.09	$ 0.51	$ 2.51	$ 4.52

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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