Property Plant and Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2012
Buildings | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	10 years
Buildings | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	20 years
Land and Leasehold Improvements | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	3 years
Land and Leasehold Improvements | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	20 years
Machinery and Equipment | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	3 years
Machinery and Equipment | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	12 years
Rolling Stock | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	2 years
Rolling Stock | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	10 years
Containers | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	5 years
Containers | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	12 years
Rail cars
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property, Plant and Equipment	20 years