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Stock-based Compensation (Tables)

12 Months Ended

Aug. 31, 2020

Restricted Stock Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule Of Restricted Stock Units Activity

				Weighted-Average
				Grant Date
	Number of			Fair Value			Aggregate
Restricted Stock Units	Shares			Per Share			Intrinsic Value
Outstanding at August 31, 2019		96,920		$	86.01
Granted		18,438		$	184.43
Converted to common shares		(29,055)		$	88.24
Forfeited		(149)		$	156.83
Outstanding at August 31, 2020		86,154		$	106.20		$	17,608
Vested at August 31, 2020		60,689		$	83.15		$	12,404

Market Share Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule Of Valuation Assumptions

	Fiscal Year Ended August 31,
	2020			2019			2018
Expected volatility		21.4%			19.6%			20.4%
Risk-free interest rate		1.4%			3.0%			1.6%
Expected dividend yield		0.0%			0.0%			0.0%

Schedule Of Market Share Units Activity

				Weighted-Average
				Grant Date
	Number of			Fair Value			Aggregate
Market Share Units	Shares			Per Share			Intrinsic Value
Outstanding at August 31, 2019		39,524		$	121.03
Granted		13,452		$	216.77
Performance factor adjustments		10,561		$	96.10
Converted to common shares		(24,171)		$	93.69
Forfeited		(248)		$	118.47
Outstanding at August 31, 2020 (1)		39,118		$	164.14		$	7,995

(1)This figure represents the total number of shares underlying MSU grants assuming achievement of the target number of shares at 100%. As the ultimate number of shares that vest could be as high as 200% of the target, the Company may be required to issue additional shares to satisfy outstanding MSU award grants.

Deferred Performance Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule Of Deferred Performance Share Units

				Weighted-Average
				Grant Date
	Number of			Fair Value			Aggregate
Deferred Performance Units	Shares			Per Share			Intrinsic Value
Outstanding at August 31, 2019		23,530		$	148.70
Granted		18,955		$	183.62
Performance factor adjustments		(19,357)		$	160.37
Converted to common shares		-		$	-
Forfeited		(214)		$	183.62
Outstanding at August 31, 2020		22,914		$	167.40		$	4,683
Vested at August 31, 2020		4,173		$	94.54		$	853

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- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

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