XML 13 R39.htm IDEA: XBRL DOCUMENT v2.4.0.6
Property, Plant, and Equipment (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Property, Plant, and Equipment      
Gross property, plant and equipment $ 2,417,720,000   $ 2,384,051,000
Accumulated depreciation 635,076,000   601,133,000
Property, plant, and equipment, net of accumulated depreciation 1,782,644,000   1,782,918,000
Capitalized interest 800,000 2,100,000  
Original carrying value of assets under capital lease obligations 25,100,000   25,100,000
Land and improvements
     
Property, Plant, and Equipment      
Gross property, plant and equipment 32,179,000   30,992,000
Buildings
     
Property, Plant, and Equipment      
Gross property, plant and equipment 41,349,000   40,617,000
Machinery and equipment
     
Property, Plant, and Equipment      
Gross property, plant and equipment 2,231,587,000   2,089,545,000
Automotive equipment
     
Property, Plant, and Equipment      
Gross property, plant and equipment 15,904,000   14,969,000
Furniture and fixtures
     
Property, Plant, and Equipment      
Gross property, plant and equipment 13,815,000   13,658,000
Leasehold improvements
     
Property, Plant, and Equipment      
Gross property, plant and equipment 2,483,000   2,483,000
Railcars
     
Property, Plant, and Equipment      
Gross property, plant and equipment 2,496,000   2,496,000
Construction in progress
     
Property, Plant, and Equipment      
Gross property, plant and equipment $ 77,907,000   $ 189,291,000