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Basis of Presentation and Significant Accounting Policies - Estimated Useful Life of Assets (Details)
12 Months Ended
Dec. 31, 2015
Buildings and leasehold improvements | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 40 years
Vehicles, tractors, trailers and tankers | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 3 years
Vehicles, tractors, trailers and tankers | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 14 years
Rail cars, containers and chassis | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 15 years
Rail cars, containers and chassis | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 30 years
Machinery and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 5 years
Machinery and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 10 years
Office and warehouse equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 3 years
Office and warehouse equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 10 years
Computer software and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 3 years
Computer software and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 5 years