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	Aug. 31, 2014	Aug. 31, 2013
Designated as Hedging Instruments | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	$ 6,089	$ 4,357
Designated as Hedging Instruments | Other accrued expenses and deferred income
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	1,460	3,740
Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	7,995	7,104
Not Designated as Hedging Instrument | Other accrued expenses and deferred income
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	$ 2,186	$ 4,645