Share-Based Payments (Tables)

8 Months Ended

May 05, 2018

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 5, 2018, and May 6, 2017, using the Black-Scholes-Merton multiple-option pricing valuation model, was $129.12 and $139.80 per share, respectively, using the following weighted average key assumptions:

	Thirty-Six Weeks Ended
	May 5,       2018		May 6,       2017
Expected price volatility		20%		18%
Risk-free interest rate		1.9%		1.2%
Weighted average expected lives (in years)		5.1		5.1
Forfeiture rate		10%		10%
Dividend yield		0%		0%