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Stock-Based Compensation (Fair Value Of Options Granted Estimated Using Black-Scholes Option Pricing Model Assumptions) (Details)	9 Months Ended
	May 26, 2012	May 28, 2011
Stock-Based Compensation [Abstract]
Expected life	4 years 9 months 18 days	4 years 9 months 18 days
Risk-free interest rate	1.01%	1.05%
Expected volatility	35.20%	35.10%
Expected dividend yield	1.70%	1.70%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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