Derivative Financial Instruments and Hedging Activities (Fair Value of Derivative Instruments on Condensed Consolidated Balance Sheets for Foreign Currency Risk Management Purposes) (Details 3) - Forward foreign exchange contracts - USD ($) $ in Thousands	May 31, 2016	Aug. 31, 2015
Designated as Hedging Instruments | Accrued expenses
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	$ 4,914	$ 16,509
Designated as Hedging Instruments | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	1,377	267
Not Designated as Hedging Instrument | Accrued expenses
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Liability Derivatives	10,434	29,529
Not Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Forward foreign exchange contracts, Asset Derivatives	$ 3,943	$ 5,525