Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Income Tax Contingency [Line Items]
Provision (benefit) for U.S. and foreign income taxes percentage	1.70%	751.50%	13.10%	82.80%
Unrecognized tax benefits	$ 2.6		$ 2.6
Total unrecognized tax benefits that would impact effective tax rate	1.6		1.6
Accrued interest and penalties on unrecognized tax benefits	$ 1.1		$ 1.1