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GOODWILL AND OTHER INTANGIBLE ASSETS (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2016
May 31, 2015
May 31, 2016
May 31, 2015
Aug. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]          
Gross carrying amounts of the intangible assets subject to amortization $ 40.3   $ 40.3   $ 47.8
Amortization expense for intangible assets $ 1.0 $ 1.6 $ 3.1 $ 5.2