Description Of Business And Summary Of Significant Accounting Policies (Estimated Useful Lives For Major Classes Of Depreciable Assets) (Details)	12 Months Ended
	Aug. 31, 2011
Buildings [Member]
Estimated Useful Life, maximum years	35
Leasehold Improvements [Member]
Estimated Useful Life, years	Shorter of lease term or useful life of the improvement
Machinery And Equipment [Member]
Estimated Useful Life, minimum years	5
Estimated Useful Life, maximum years	10
Furniture Fixtures And Office Equipment [Member]
Estimated Useful Life, maximum years	5
Computer Hardware And Software [Member]
Estimated Useful Life, minimum years	3
Estimated Useful Life, maximum years	7
Transportation Equipment [Member]
Estimated Useful Life, maximum years	3