Stock-Based Compensation (Tables)

9 Months Ended

May 31, 2014

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

Fair Value Of Options Granted Estimated Using Black-Scholes Option Pricing Model Assumptions

	Thirty-Nine Weeks Ended
	May 31,		June 1,
	2014		2013
Expected life (in years)	3.9		3.8
Risk-free interest rate	0.93	%	0.55	%
Expected volatility	26.59	%	32.86	%
Expected dividend yield	1.70	%	1.70	%

Summary Of Stock Options

	Options	Weighted-Average Exercise Price per Share		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding on August 31, 2013	1,224	$	58.30
Granted	399		81.76
Exercised	(343)		51.25
Canceled	(23)		73.13
Outstanding on May 31, 2014	1,257	$	67.40	4.83	$	30,894
Exercisable on May 31, 2014	436	$	56.18	3.53	$	15,620

Restricted Stock [Member]

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

Non-Vested Share Activity

	Shares	Weighted-Average  Grant-Date Fair Value
Non-vested restricted share awards at August 31, 2013	505	$	59.47
Granted	121		82.20
Vested	(152)		50.22
Canceled/Forfeited	(16)		68.84
Non-vested restricted share awards at May 31, 2014	458	$	68.27

Restricted Stock Unit Agreement [Member]

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

Non-Vested Unit Award Activity

	Shares		Weighted- Average Grant- Date Fair Value
Non-vested restricted stock unit awards at August 31, 2013	196	$	55.32
Granted	3		83.03
Vested	(1)		88.12
Canceled/Forfeited	—		—
Non-vested restricted stock unit awards at May 31, 2014	198	$	55.68