Derivative Instruments - Schedule of Pre-Tax Effect of Cash Flow Hedging Relationships (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loss Reclassified from AOCL into Income	$ 5,285		$ 2,801
Cash flow hedging | Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Loss) Gain Recognized in AOCL on Derivatives	(6,304)	$ (822)	(4,902)	$ 1,442
Loss Reclassified from AOCL into Income	(1,019)	(597)	(2,101)	(1,381)
Cash flow hedging | Designated as hedging instrument | Foreign exchange contract | SG&A
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Loss) Gain Recognized in AOCL on Derivatives	(1,040)	(822)	362	1,442
Loss Reclassified from AOCL into Income	(1,019)	(597)	(2,101)	(1,381)
Cash flow hedging | Designated as hedging instrument | Interest rate swap agreement | Interest expense, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Loss) Gain Recognized in AOCL on Derivatives	(5,264)	0	(5,264)	0
Loss Reclassified from AOCL into Income	$ 0	$ 0	$ 0	$ 0