Share-Based Payments (Tables)

3 Months Ended

Nov. 23, 2019

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 twelve week periods ended November 23, 2019 and November 17, 2018, using the Black-Scholes-Merton multiple-option pricing valuation model, was $252.39 and $208.31 per share, respectively, using the following weighted average key assumptions:

	Twelve Weeks Ended
		November 23, 2019		November 17, 2018
Expected price volatility		22	%		21	%
Risk-free interest rate		1.4	%		3.1	%
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 twelve weeks ended November 23, 2019 were as follows:

	Number     of Shares			Weighted-Average   Grant Date Fair Value
Nonvested at August 31, 2019		10,049		$	773.61
Granted		7,008			1,060.81
Vested		(2,456	)		772.80
Canceled or forfeited		(66	)		772.80
Nonvested at November 23, 2019		14,535		$	912.23