CREDIT ARRANGEMENTS (Long-term Debt, Including the Deferred Gain from the Termination of the Interest Rate Swaps) (Details) - USD ($) $ in Thousands	Nov. 30, 2020	Aug. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 1,093,754	$ 1,092,266
Less debt issuance costs	8,160	8,581
Total amounts outstanding	1,085,594	1,083,685
Less current maturities of long-term debt	20,701	18,149
Long-term debt	$ 1,064,893	1,065,536
2027 Notes
Debt Instrument [Line Items]
Weighted average interest rate	5.375%
Total debt	$ 300,000	300,000
2026 Notes
Debt Instrument [Line Items]
Weighted average interest rate	5.75%
Total debt	$ 350,000	350,000
2023 Notes
Debt Instrument [Line Items]
Weighted average interest rate	4.875%
Total debt	$ 330,000	330,000
Poland Term Loan | Revolving credit facility
Debt Instrument [Line Items]
Weighted average interest rate	1.72%
Total debt	$ 39,944	40,713
Other
Debt Instrument [Line Items]
Weighted average interest rate	5.10%
Total debt	$ 21,329	21,329
Finance leases
Debt Instrument [Line Items]
Total debt	$ 52,481	$ 50,224