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CREDIT ARRANGEMENTS (Schedule of Long-term Debt) (Details) - USD ($) $ in Thousands	Feb. 28, 2025	Aug. 31, 2024
Debt Instrument [Line Items]
Total debt	$ 1,202,601	$ 1,198,241
Less debt issuance costs	(12,189)	(13,073)
Total amounts outstanding	1,194,770	1,189,621
Less current maturities of long-term debt	(40,043)	(38,786)
Long-term debt	$ 1,154,727	1,150,835
2030 Notes
Debt Instrument [Line Items]
Weighted average interest rate	4.125%
Total debt	$ 300,000	300,000
2031 Notes
Debt Instrument [Line Items]
Weighted average interest rate	3.875%
Total debt	$ 300,000	300,000
2032 Notes
Debt Instrument [Line Items]
Weighted average interest rate	4.375%
Total debt	$ 300,000	300,000
Series 2022 Bonds, due 2047
Debt Instrument [Line Items]
Weighted average interest rate	4.00%
Total debt	$ 145,060	145,060
Plus unamortized bond premium	$ 4,358	4,453
Other
Debt Instrument [Line Items]
Weighted average interest rate	5.10%
Total debt	$ 11,910	11,910
Finance leases
Debt Instrument [Line Items]
Weighted average interest rate	5.252%
Total debt	$ 145,631	$ 141,271

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