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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Earnings Per Share [Abstract]    
Net income attributable to CVR Energy stockholders $ 66.2 $ 22.2
Weighted-average shares of common stock outstanding - Basic and diluted (in shares) 86,800,000 86,800,000
Basic and diluted earnings per share (in dollars per share) $ 0.76 $ 0.26
Dilutive awards outstanding (in shares) 0 0