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Income Taxes - Additional Information (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Alternative fuel mixture and cellulosic biofuel producer credits $ 166,006,000 $ (81,695,000) $ 0
Cash payments for income taxes 90,700,000 9,700,000 52,700,000
Unrecognized tax benefits 5,420,000 111,303,000 111,013,000
Unrecognized tax benefits that would impact of effective tax rate 4,000,000    
Income tax, interest expense gross 3,300,000 300,000  
Income tax, penalty expense gross 100,000 100,000  
Income tax, accrued interest expense gross 400,000 2,500,000  
Income tax, accrual for penalties $ 100,000 $ 100,000  
Federal
      
Income tax examination (description) A federal examination of the tax years 2008 and 2009 was concluded in November 2013.    
Foreign
      
Open tax year 2008    
Minimum | Federal
      
Open tax year 2010    
Minimum | State
      
Open tax year 2009    
Minimum | Boise Inc.
      
Open tax year 2008    
Maximum | Federal
      
Open tax year 2013    
Maximum | State
      
Open tax year 2013    
Maximum | Boise Inc.
      
Open tax year 2013