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Summary of Significant Accounting Policies (Details 3) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
month
Dec. 31, 2010
Dec. 31, 2009
Cost Classifications      
Depreciation and amortization not included in cost of product sold $ 2.5 $ 2.8 $ 2.9
Depreciation and amortization not included in direct operating expenses 86.0 81.8 79.9
Depreciation and amortization not included in selling, general and administrative expenses 1.8 2.1 2.0
Revenue Recognition      
Expected period of delivery of deferred revenue (in months) 12    
Share-Based Compensation      
Vesting period (in years) 3 years    
Coffeyville refinery
      
Planned Major Maintenance Costs      
Number of phases 2    
Turnaround costs 66.4 1.2  
Coffeyville refinery | Minimum
      
Planned Major Maintenance Costs      
Frequency of planned major maintenance activities (in years) 4    
Coffeyville refinery | Maximum
      
Planned Major Maintenance Costs      
Frequency of planned major maintenance activities (in years) 5    
Nitrogen fertilizer plant
      
Planned Major Maintenance Costs      
Turnaround costs   $ 3.5  
Frequency of planned major maintenance activities (in years)   2