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Income Taxes (Tax Years That Remain Subject To Examinations For Major Tax Jurisdictions) (Details)
12 Months Ended
Aug. 31, 2015
Canada [Member] | Minimum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2008
Canada [Member] | Maximum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2015
Australia [Member] | Minimum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2008
Australia [Member] | Maximum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2015
Japan, United Kingdom [Member] | Minimum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2010
Japan, United Kingdom [Member] | Maximum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2015
United States - State And Local Income Tax [Member] | Minimum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2011
United States - State And Local Income Tax [Member] | Maximum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2015
United States - Federal Income Tax [Member] | Minimum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2012
United States - Federal Income Tax [Member] | Maximum [Member]  
Income Taxes [Line Items]  
Tax years that remain subject to examinations 2015