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Stock-Based Compensation (Schedule Of Option Grant Fair Value Assumptions) (Details) - $ / shares
3 Months Ended
Nov. 28, 2015
Nov. 29, 2014
Stock-Based Compensation [Abstract]    
Expected life (in years) 3 years 10 months 24 days 3 years 10 months 24 days
Risk-free interest rate 1.09% 1.09%
Expected volatility 21.82% 24.49%
Expected dividend yield 2.40% 1.70%
Weighted-average grant-date fair value $ 8.03 $ 14.06