Fair Value of Derivative Instruments Located on Condensed Consolidated Balance Sheets Utilized for Foreign Currency Risk Management Purposes (Detail) (Forward foreign exchange contracts, USD $) In Thousands, unless otherwise specified	Nov. 30, 2014	Aug. 31, 2014
Designated as Hedging Instruments | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	$ 4,373	$ 6,089
Designated as Hedging Instruments | Accrued expenses
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	2,501	1,460
Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	7,994	7,995
Not Designated as Hedging Instrument | Accrued expenses
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	$ 7,833	$ 2,186