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Summary of Significant Accounting Policies (Details 3) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
M
Dec. 31, 2011
Dec. 31, 2010
Cost Classifications      
Depreciation and amortization not included in cost of product sold $ 3.7 $ 2.5 $ 2.8
Depreciation and amortization not included in direct operating expenses 124.1 86.0 81.8
Depreciation and amortization not included in selling, general and administrative expenses 2.2 1.8 2.1
Revenue Recognition      
Expected period of delivery of deferred revenue (in months) 12    
Long-Term Incentive Plan | Restricted Shares
      
Share-Based Compensation      
Offer price per Share on restricted stock awards vested in 2012 $ 30.00    
Number of non-transferable contingent cash payments right for each restricted stock awards vested in 2012 (in shares) 1    
Coffeyville refinery
      
Planned Major Maintenance Costs      
Number of phases 2    
Turnaround costs 21.2 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    
Wynnewood refinery
      
Planned Major Maintenance Costs      
Turnaround costs 102.5    
Nitrogen fertilizer plant
      
Planned Major Maintenance Costs      
Turnaround costs $ 4.8   $ 3.5
Frequency of planned major maintenance activities (in years) 2