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Share-Based Compensation (Details 2) - CVR Energy Long Term Incentive Plan - Restricted stock units - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Non-vested shares activity        
Non-vested at the beginning of the period (in shares) 48,011 359,552 1,145,611  
Granted (in shares) 0 0 2,600  
Vested (in shares) (43,085) (281,684) (709,959)  
Forfeited (in shares) (4,327) (29,857) (78,700)  
Non-vested at the end of the period (in shares) 599 48,011 359,552  
Weighted-Average Grant-Date Fair Value        
Non-vested at the beginning of the period (in dollars per share) $ 45.89 $ 28.09 $ 23.24  
Granted (in dollars per share) 0.00 0.00 54.75  
Vested (in dollars per share) 45.55 23.89 18.73  
Forfeited (in dollars per share) 47.68 39.17 42.80  
Non-vested at the end of the period (in dollars per share) $ 57.23 $ 45.89 $ 28.09  
Aggregate Intrinsic Value $ 0.0 $ 1.9 $ 15.6 $ 55.9