Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2011
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense, Net	$ 28,000,000	$ 25,000,000
Future minimum obligations under non-cancelable operating leases:
2014	21,101,000
2015	18,027,000
2016	12,076,000
2017	9,980,000
2018	7,138,000
Thereafter	36,281,000
Total	$ 104,603,000