Share-Based Payments (Tables)

8 Months Ended

May 07, 2016

Disclosure of Compensation Related Costs, Share-based 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 7, 2016, and May 9, 2015, using the Black-Scholes-Merton multiple-option pricing valuation model, was $156.20 and $106.26 per share, respectively, using the following weighted average key assumptions:

	Thirty-Six Weeks Ended
	May 7, 2016			May 9, 2015
Expected price volatility		18	%		20	%
Risk-free interest rate		1.5	%		1.4	%
Weighted average expected lives (in years)		5.7			5.1
Forfeiture rate		10	%		9	%
Dividend yield		0	%		0	%