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INCOME TAX (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017	Aug. 31, 2017
Operating Loss Carryforwards [Line Items]
Blended federal statutory income tax rate (percent)			25.70%
Additional income tax expense recognized for the effects of provisions of the TCJA			$ 9.9
Bonus depreciation for certain capital expenditures (percent)			100.00%
Tax effect or reduction to deferred tax liabilities			$ 45.8
Effective income tax rate from continuing operations	23.90%	25.90%	21.80%	26.10%
Effective tax rate from discontinued operation (percent)	30.40%	17.40%	40.90%	20.60%
Net income tax payments			$ 14.8	$ 28.2
Unrecognized income tax benefits	$ 8.0		8.0		$ 9.3
Possible unrecognized income tax benefits decrease during the next twelve months	$ 8.0		$ 8.0
Poland
Operating Loss Carryforwards [Line Items]
Statutory income tax rate			19.00%

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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