Share-Based Payments (Tables)

6 Months Ended

Feb. 09, 2013

Weighted Average for Key Assumptions Used in Determining Fair Value of Options Granted Related Share-Based Compensation Expense

The weighted average fair value of the stock option awards granted during the twenty-four week periods ended February 9, 2013, and February 11, 2012, using the Black-Scholes-Merton multiple-option pricing valuation model, was $98.09 and $93.42 per share, respectively, using the following weighted average key assumptions:

	Twenty-Four Weeks Ended
	February 9, 2013			February 11, 2012
Expected price volatility		29	%		31	%
Risk-free interest rate		0.5	%		0.7	%
Weighted average expected lives (in years)		5.2			5.3
Forfeiture rate		10	%		10	%
Dividend yield		0	%		0	%