Impact of Derivatives for Foreign Currency Risk (Interest Rate Risk) and Designated as Hedging Instruments on Accumulated Other Comprehensive Income (Loss) and Earnings (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	May 31, 2014	May 31, 2013
Forward foreign exchange contracts | Net revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	$ (2,778)	$ (522)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(3,938)	(1,144)
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	32	162
Forward foreign exchange contracts | Cost of revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	364	4,858
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	1,468	4,253
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	3,784	5,370
Forward foreign exchange contracts | Selling, general and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	51	(137)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(276)	217
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	137	201
Forward foreign exchange contracts | Income from discontinued operations net of tax
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	(576)	(335)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(577)	(138)
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	332	403
Interest rate swap | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	$ (2,963)	$ (2,963)