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Stock-Based Compensation (Schedule Of Option Grant Fair Value Assumptions) (Details) - $ / shares
3 Months Ended
Dec. 02, 2017
Dec. 03, 2016
Expected life (in years) 4 years 4 years 1 month 6 days
Risk-free interest rate 1.87% 1.16%
Expected volatility 22.13% 20.50%
Expected dividend yield 2.30% 2.40%
Weighted-average grant-date fair value $ 12.25 $ 9.29