Derivative Financial Instruments and Hedging Activities (Fair Value of Derivative Instruments Recorded on Consolidated Statements of Operations) (Details) - Cost of revenue - USD ($) $ in Thousands	3 Months Ended
Nov. 30, 2019	Nov. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency gain (loss)	$ (28,900)	$ 4,500
Forward foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Net Income on Derivatives	$ 26,718	$ (6,986)

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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