Share-Based Payments (Tables)

6 Months Ended

Feb. 15, 2020

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 twenty-four week periods ended February 15, 2020 and February 9, 2019, using the Black-Scholes-Merton multiple-option pricing valuation model, was $252.39 and $208.33 per share, respectively, using the following weighted average key assumptions:

	Twenty-Four Weeks Ended
	February 15,      2020		February 9,      2019
Expected price volatility		22%		21%
Risk-free interest rate		1.4%		3.0%
Weighted average expected lives (in years)		5.5		5.6
Forfeiture rate		10%		10%
Dividend yield		0%		0%

Schedule of Nonvested Restricted Stock Units Activity

Transactions related to restricted stock units for the twenty-four weeks ended February 15, 2020 were as follows:

	Number     of Shares			Weighted-Average Grant Date Fair Value
Nonvested at August 31, 2019		10,049		$	773.61
Granted		8,735			1,086.61
Vested		(4,183	)		945.58
Canceled or forfeited		(165	)		929.33
Nonvested at February 15, 2020		14,436		$	911.39