CREDIT ARRANGEMENTS (Narrative) (Details)	3 Months Ended		6 Months Ended
	Feb. 28, 2018 USD ($)	Feb. 28, 2017 USD ($)	Feb. 28, 2018 USD ($)	Feb. 28, 2017 USD ($)	Feb. 28, 2018 PLN (zł)	Feb. 28, 2018 USD ($)	Feb. 21, 2018 USD ($)	Dec. 29, 2017 USD ($)	Aug. 31, 2017 PLN (zł)	Aug. 31, 2017 USD ($)	Jul. 31, 2017 USD ($)	May 31, 2013 USD ($)
Debt Instrument [Line Items]
Interest capitalized	$ 3,000,000	$ 2,100,000	$ 6,800,000	$ 3,700,000
Interest paid	$ 10,800,000	$ 24,700,000	$ 20,200,000	$ 33,100,000
CMCP
Debt Instrument [Line Items]
Revolving credit facility current borrowing capacity					zł 225,000,000	$ 65,701,000			zł 175,000,000.0	$ 49,100,000.0
Stand by letters of credit outstanding amount						$ 2,800,000				1,300,000
2027 Notes
Debt Instrument [Line Items]
Debt instrument, face amount											$ 300,000,000
Weighted average interest rate					5.375%	5.375%					5.375%
2023 Notes
Debt Instrument [Line Items]
Debt instrument, face amount												$ 330,000,000
Weighted average interest rate					4.875%	4.875%
Debt instrument, interest rate, stated percentage												4.875%
Revolving credit facility
Debt Instrument [Line Items]
Revolving credit facility current borrowing capacity						$ 350,000,000
Minimum liquidity required						150,000,000
Revolving credit facility, maximum borrowing capacity						750,000,000
Revolving credit facility, amount drawn						$ 0				0
Minimum interest coverage ratio			2.50
Maximum debt to capitalization ratio			0.60
Actual interest coverage ratio					7.63	7.63
Actual debt to capitalization ratio					0.36	0.36
Revolving credit facility | 2022 Term Loan
Debt Instrument [Line Items]
Weighted average interest rate					2.909%	2.909%
Periodic payments, as percent of original principal amount (percent)			1.25%
Revolving credit facility, maximum borrowing capacity						$ 146,250,000				150,000,000
Stand-by letters of credit
Debt Instrument [Line Items]
Revolving credit facility current borrowing capacity						50,000,000
Stand by letters of credit outstanding amount						$ 3,300,000				$ 3,000,000
Term Loan B Facility | Revolving credit facility
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity							$ 400,000,000	$ 600,000,000
Term Loan A Facility | Revolving credit facility
Debt Instrument [Line Items]
Periodic payments, as percent of original principal amount (percent)			1.25%
Revolving credit facility, maximum borrowing capacity							$ 200,000,000