INCOME TAX (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 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	33.30%	22.60%	31.60%	28.80%
Statutory income tax rate			35.00%	35.00%
Effective income tax rate from discontinued operations	0.00%	(0.80%)	0.20%	46.80%
Net income tax payments			$ 28.7	$ 8.7
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