CREDIT ARRANGEMENTS (Narrative) (Details) zł in Thousands		1 Months Ended		12 Months Ended
	May 15, 2023 USD ($)	Nov. 30, 2022 USD ($)	Feb. 28, 2022 USD ($)	Aug. 31, 2023 USD ($)	Aug. 31, 2023 PLN (zł)	Aug. 31, 2022 USD ($)	Aug. 31, 2021 USD ($)	Aug. 31, 2023 PLN (zł)	Oct. 31, 2022 USD ($)	Aug. 31, 2022 PLN (zł)	Jan. 31, 2022 USD ($)	Feb. 28, 2021 USD ($)	May 31, 2013 USD ($)
Debt Instrument [Line Items]
Loss on debt extinguishment				$ 179,000		$ 16,052,000	$ 16,841,000
Total long-term debt including current maturities				1,164,991,000		1,513,703,000
Interest costs capitalized				21,500,000		11,900,000	2,800,000
Less debt issuance costs				14,840,000		16,496,000					$ 9,400,000
Repayments of Long-term Debt				389,756,000		328,594,000	$ 368,527,000
CMCP
Debt Instrument [Line Items]
Maximum borrowing capacity				145,400,000		63,900,000		zł 600,000		zł 300,000
Revolving credit agreement
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity				850,000,000
Revolving line of credit outstanding amount				$ 0		0
Minimum interest coverage ratio				2.50	2.50
Maximum debt to capitalization ratio				0.60	0.60
Actual interest coverage ratio				34.79				34.79
Actual debt to capitalization ratio				0.22				0.22
Revolving credit agreement | CMCP
Debt Instrument [Line Items]
Revolving line of credit outstanding amount | zł								zł 0
Borrowings under uncommitted lines of credit | zł					zł 0
Stand-by letters of credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 50,000,000
Stand by letters of credit outstanding amount				900,000		1,400,000
Standby Letters of Credit | CMCP
Debt Instrument [Line Items]
Stand by letters of credit outstanding amount				$ 16,300,000		1,000,000
U.S. Facility
Debt Instrument [Line Items]
Trade accounts receivable						150,000,000
2023 Notes
Debt Instrument [Line Items]
Weighted average interest rate				4.875%				4.875%					4.875%
Total long-term debt including current maturities				$ 0		330,000,000							$ 330,000,000
Repayments of Long-term Debt	$ 214,100,000	$ 115,900,000
$300 million notes at 4.125% due February 2030
Debt Instrument [Line Items]
Weighted average interest rate				4.125%				4.125%			4.125%
Total long-term debt including current maturities				$ 300,000,000		300,000,000					$ 300,000,000
$300 million notes at 4.375% due March 2032
Debt Instrument [Line Items]
Weighted average interest rate				4.375%				4.375%			4.375%
Total long-term debt including current maturities				$ 300,000,000		300,000,000					$ 300,000,000
$300 million notes at 3.875% due February 2031
Debt Instrument [Line Items]
Weighted average interest rate				3.875%				3.875%				3.875%
Total long-term debt including current maturities				$ 300,000,000		300,000,000						$ 300,000,000
Less debt issuance costs												$ 4,900,000
2026 Notes
Debt Instrument [Line Items]
Weighted average interest rate												5.75%
Loss on debt extinguishment						16,800,000
Total long-term debt including current maturities												$ 350,000,000
Series 2022 Bonds, due 2047
Debt Instrument [Line Items]
Term loan, maximum principal amount			$ 145,100,000
Weighted average interest rate			4.00%	4.00%				4.00%
Total long-term debt including current maturities				$ 145,060,000		145,060,000
Less debt issuance costs			$ 3,100,000
Bonds, effective yield (interest rate)			0.035
Proceeds from issuance of debt			$ 150,000,000
Poland Term Loan | CMCP
Debt Instrument [Line Items]
Revolving line of credit outstanding amount						32,400,000				152,400
Poland Term Loan | Revolving credit agreement
Debt Instrument [Line Items]
Weighted average interest rate				0.00%				0.00%
Total long-term debt including current maturities				$ 0		32,439,000
Credit Agreement Maturing March 2026 | Revolving credit agreement
Debt Instrument [Line Items]
Maximum borrowing capacity				600,000,000
Credit Agreement Maturing March 2026 | Line of Credit | Revolving credit agreement
Debt Instrument [Line Items]
Maximum borrowing capacity									$ 400,000,000
Credit Agreement, Maturing 2027 | Line of Credit | Secured Debt
Debt Instrument [Line Items]
Term loan, maximum principal amount									$ 200,000,000
Poland Program
Debt Instrument [Line Items]
Transfer of Accounts Receivable Program, Face Amount				69,800,000		61,300,000				288,000
Transfers of Accounts Receivable Outstanding				$ 8,400,000		$ 26,400,000		zł 34,700		zł 124,000