SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - USD ($) $ in Thousands		12 Months Ended
		Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		$ 9,597	$ 8,403	$ 4,489
Additions, Charged to Cost and Expense		(1,429)	1,079	1,820
Additions, Charged to Other Accounts	[1]	138	2,220	4,718
Deductions, Charged to Cost and Expense				(75)
Deductions, Charged to Other Accounts	[2]	(2,753)	(2,105)	(2,549)
Balance at End of Period		5,553	9,597	8,403
Deferred tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		281,849	283,560	268,554
Additions, Charged to Cost and Expense		20,058	4,733	22,220
Additions, Charged to Other Accounts
Deductions, Charged to Cost and Expense		(23,808)	(6,444)	(7,214)
Deductions, Charged to Other Accounts
Balance at End of Period		$ 278,099	281,849	283,560
Before Reclassification | Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period			$ 8,403
Balance at End of Period				$ 8,403

[1] Recoveries and translation adjustments.

[2] Uncollectable accounts charged to the allowance.