INCOME TAX (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014	Aug. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Effective income tax rate from continuing operations	36.10%	35.90%	33.50%	31.40%
Statutory income tax rate			35.00%	35.00%
Effective income tax rate from discontinued operations	3.90%	13.10%	2.20%	48.80%
Net income tax payments			$ 46.7	$ 12.9
Unrecognized income tax benefits	$ 27.3		27.3		$ 27.3
Possible unrecognized income tax benefits decrease during the next twelve months	16.9		16.9
Unrecognized income tax benefits that would reduce provisions for income taxes	$ 2.7		$ 2.7
Howell
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gain				$ 23.8