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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share [Abstract]                      
Net income attributable to CVR Energy stockholders                 $ 169.6 $ 173.9 $ 370.7
Weighted-average number of shares of common stock outstanding - Basic (in shares) 86.8 86.8 86.8 86.8 86.8 86.8 86.8 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 86.8 86.8 86.8 86.8 86.8 86.8 86.8
Basic earnings per share (in dollars per share) $ (0.52) $ 0.67 $ 1.17 $ 0.63 $ (0.51) $ 0.09 $ 0.96 $ 1.46 $ 1.95 $ 2.00 $ 4.27
Diluted earnings per share (in dollars per share) $ (0.52) $ 0.67 $ 1.17 $ 0.63 $ (0.51) $ 0.09 $ 0.96 $ 1.46 $ 1.95 $ 2.00 $ 4.27