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Commitments and Contingencies (Details 6)
1 Months Ended 12 Months Ended 94 Months Ended
Mar. 31, 2012
USD ($)
issue
Aug. 31, 2011
USD ($)
Dec. 31, 2015
USD ($)
landfill
Dec. 31, 2014
USD ($)
landfill
Dec. 31, 2013
USD ($)
Nov. 01, 2014
USD ($)
Environmental, Health, and Safety ("EHS") Matters            
Expenses related to environmental, health and safety ("EHS") matters     $ 35,700,000 $ 100,600,000 $ 111,300,000  
WRC            
Environmental, Health, and Safety ("EHS") Matters            
Payment of civil penalties   $ 950,000        
Expected remaining costs under consent order     3,000,000      
EHS            
Environmental, Health, and Safety ("EHS") Matters            
Environmental accruals     3,600,000 1,100,000    
Environmental accruals included in other current liabilities     2,000,000 200,000    
Estimated closure and post-closure costs     $ 400,000 $ 900,000    
Number of landfills | landfill     2 2    
EHS | CRRM            
Environmental, Health, and Safety ("EHS") Matters            
Cost of renewable identification numbers     $ 123,900,000 $ 127,200,000 $ 180,500,000  
Biofuel blending obligation recorded in other current liabilities     9,500,000 $ 52,300,000    
Marquee issues under the Clean Air Act | issue 4          
Percentage of refining capacity 90.00%          
Environmental civil penalty $ 700,000          
Remaining costs associated with Second Consent Decree     $ 44,000,000      
MSAT II | CRRM            
Environmental, Health, and Safety ("EHS") Matters            
Expense incurred to date           $ 48,300,000
MSAT II | WRC            
Environmental, Health, and Safety ("EHS") Matters            
Expense incurred to date           $ 89,000,000