CREDIT ARRANGEMENTS (Long-term Debt, Including the Deferred Gain from the Termination of the Interest Rate Swaps) (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Aug. 31, 2019
Debt Instrument [Line Items]
Total debt	$ 1,203,006	$ 1,254,921
Less debt issuance costs	9,846	10,268
Total amounts outstanding	1,193,160	1,244,653
Less current maturities	13,717	13,510
Less short-term borrowings	0	3,929
Current maturities of long-term debt and short-term borrowings	13,717	17,439
Long-term debt	$ 1,179,443	1,227,214
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
Term Loans | Revolving credit facility
Debt Instrument [Line Items]
Weighted average interest rate	3.624%
Total debt	$ 160,125	210,125
Short-term borrowings
Debt Instrument [Line Items]
Weighted average interest rate, short term	2.403%
Total debt	$ 0	3,929
Finance leases
Debt Instrument [Line Items]
Total debt	39,713	37,699
Other
Debt Instrument [Line Items]
Total debt	$ 23,168	$ 23,168