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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Earnings Per Share [Abstract]        
Net income attributable to CVR Energy stockholders $ 101.9 $ 83.7 $ 156.7 $ 210.4
Weighted-average shares of common stock outstanding - Basic (in shares) 86.8 86.8 86.8 86.8
Weighted-average shares of common stock outstanding - Diluted (in shares) 86.8 86.8 86.8 86.8
Basic earnings per share (in dollars per share) $ 1.17 $ 0.96 $ 1.80 $ 2.42
Diluted earnings per share (in dollars per share) $ 1.17 $ 0.96 $ 1.80 $ 2.42