Total Purchased Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	$ 415,546	$ 408,131
Accumulated Amortization	(171,490)	(147,697)
Net Carrying Amount	244,056	260,434
Indefinite lived trade name
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	123,090	122,190
Net Carrying Amount	123,090	122,190
Contractual agreements and customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	165,651	157,152
Accumulated Amortization	(83,695)	(70,371)
Net Carrying Amount	81,956	86,781
Intellectual property
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	126,805	128,789
Accumulated Amortization	(87,795)	(77,326)
Net Carrying Amount	$ 39,010	$ 51,463