Share-Based Payments (Tables)

9 Months Ended

May 10, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

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

The weighted average fair value of the stock option awards granted during the thirty-six week periods ended May 10, 2014, and May 4, 2013, using the Black-Scholes-Merton multiple-option pricing valuation model, was $96.92 and $98.58 per share, respectively, using the following weighted average key assumptions:

	Thirty-Six Weeks Ended
	May 10, 2014			May 4, 2013
Expected price volatility		23	%		29	%
Risk-free interest rate		1.0	%		0.5	%
Weighted average expected lives (in years)		5.2			5.2
Forfeiture rate		9	%		10	%
Dividend yield		0	%		0	%