Estimated Useful Lives for Major Classes of Depreciable Assets (Detail)	12 Months Ended
	Aug. 31, 2014
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life, years	35 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Life	Shorter of lease term or useful life of the improvement
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life, years	10 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life, years	5 years
Furniture, fixtures and office equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Life, years	5 years
Computer hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life, years	7 years
Computer hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life, years	3 years
Transportation equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Life, years	3 years