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Commitments and Contingencies (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Loss Contingencies [Line Items]      
Environmental costs recognized capitalized in the period $ 33.8 $ 22.2  
Affiliate pension obligations      
Minimum ownership interest in CVR Energy by Mr. Icahn's affiliates (as a percent) 80.00%    
Number of sponsors of pension plans 2    
Mr. Icahn's affiliates
     
Affiliate pension obligations      
Ownership percentage held by controlling stockholder 82.00%    
EHS
     
Loss Contingencies [Line Items]      
Environmental accruals 1.4   1.5
EHS | CRRM
     
Loss Contingencies [Line Items]      
Cost of renewable identification numbers 34.7 32.1  
Biofuel blending obligation recorded in other current liabilities 39.9   17.4
Affiliate Pension Obligations
     
Affiliate pension obligations      
Underfunded pension obligation, if ACF and Federal-Mogul plans were voluntarily terminated $ 483.1   $ 591.8
New Vitol Agreement | CRRM
     
Loss Contingencies [Line Items]      
Renewal term of agreement 1 year    
Number of days for prior notice of nonrenewal 180 days