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Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Detail) $ in Thousands	9 Months Ended
	May 31, 2021 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,293,043
Ending balance	1,286,763
Unrealized Gain (Loss) on Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(11,970)
Other comprehensive gain (loss) before reclassifications	(237)
Amounts reclassified from Accumulated other comprehensive loss	3,904
Ending balance	(8,303)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(39,816)
Other comprehensive gain (loss) before reclassifications	9,298
Ending balance	(30,518)
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,031)
Other comprehensive gain (loss) before reclassifications	(138)
Ending balance	(1,169)
Accumulated Other Comprehensive (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(52,817)
Other comprehensive gain (loss) before reclassifications	8,923
Amounts reclassified from Accumulated other comprehensive loss	3,904
Ending balance	$ (39,990)

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