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Basis Of Presentation And Summary Of Significant Accounting Policies (Shipping And Handling Costs) (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2014
Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]      
Shipping and handling costs $ 16.1 $ 15.8 $ 16.2