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Benefit Plans (Details) (Defined-contribution 401(k) plans, USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
year
plan
Dec. 31, 2010
Dec. 31, 2009
Benefit Plans      
Number of defined-contribution 401(k) plans 3    
Vesting schedule for employer's matching funds (in years) 3    
Matching contributions made by the company during the year $ 2.3 $ 2.2 $ 2.1
CVR
     
Benefit Plans      
Employee contribution limit per calendar year as a percentage of annual salaries 50.00%    
Employee contribution limit per calendar year as a percentage of annual income sharing 100.00%    
Nonunion plan | CVR
     
Benefit Plans      
Employer match of employee contributions of first 6% of eligible compensation (as a percent) 75.00%    
Percentage of eligible compensation, matched by employer 6.00%    
Union plan | Wynnewood Acquisition
     
Benefit Plans      
Employer match of employee contributions of first 6% of eligible compensation (as a percent) 80.00%    
Percentage of eligible compensation, matched by employer 5.00%    
Employer contribution each pay period (as a percent) 3.00%    
Union plan | CVR
     
Benefit Plans      
Employer match of employee contributions of first 6% of eligible compensation (as a percent) 75.00%    
Percentage of eligible compensation, matched by employer 6.00%