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	May 31, 2014	Aug. 31, 2013
Designated as Hedging Instruments | Accrued expenses
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	$ 3,077	$ 3,740
Designated as Hedging Instruments | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	1,247	4,357
Not Designated as Hedging Instrument | Accrued expenses
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	3,625	4,645
Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	$ 1,787	$ 7,104