Property, Plant and Equipment Estimated Useful Life (Detail)	9 Months Ended
	Sep. 30, 2013
Property and buildings
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant And Equipment useful life	40 years
Marine Bunkers
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant And Equipment useful life	15 years
Equipment | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant And Equipment useful life	12 years
Equipment | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant And Equipment useful life	3 years
Transportation vehicles
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant And Equipment useful life	8 years