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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Earnings Per Share [Abstract]        
Net income attributable to CVR Energy stockholders $ 5.4 $ 57.9 $ 17.6 $ 214.6
Weighted-average shares of common stock outstanding - Basic and diluted (in shares) 86.8 86.8 86.8 86.8
Basic and diluted earnings per share (in dollars per share) $ 0.06 $ 0.67 $ 0.20 $ 2.47