Income Taxes (Tax Years That Remain Subject To Examinations For Major Tax Jurisdictions) (Details)	12 Months Ended
	Aug. 31, 2018
Canada And Australia [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2011
Canada And Australia [Member] | Maximum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2018
Japan And The United Kingdom [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2013
Japan And The United Kingdom [Member] | Maximum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2018
United States - State And Local Income Tax [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2014
United States - State And Local Income Tax [Member] | Maximum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2018
United States - Federal Income Tax [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2015
United States - Federal Income Tax [Member] | Maximum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2018
China [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2016
China [Member] | Maximum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2018
Singapore [Member] | Minimum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2017
Singapore [Member] | Maximum [Member]
Income Taxes [Line Items]
Tax years that remain subject to examinations	2018