Total Purchased Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	$ 461,890	$ 260,625
Accumulated Amortization	(157,660)	(141,572)
Net Carrying Amount	304,230	119,053
Indefinite lived trade name
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	122,190	50,590
Net Carrying Amount	122,190	50,590
Contractual agreements and customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	199,665	122,679
Accumulated Amortization	(76,341)	(63,772)
Net Carrying Amount	123,324	58,907
Intellectual property
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	137,388	84,688
Accumulated Amortization	(78,997)	(76,799)
Net Carrying Amount	58,391	7,889
Finite lived trade name
Acquired Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	2,647	2,668
Accumulated Amortization	(2,322)	(1,001)
Net Carrying Amount	$ 325	$ 1,667