Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 02, 2017	Jun. 03, 2017	Mar. 04, 2017	Dec. 03, 2016	Sep. 03, 2016	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	Sep. 02, 2017	Sep. 03, 2016	Aug. 29, 2015
Net Income Per Share [Abstract]
Net income as reported	$ 60,748	$ 62,836	$ 53,559	$ 54,288	$ 61,846	$ 64,816	$ 49,525	$ 55,029	$ 231,431	$ 231,216	$ 231,308
Less: Distributed net income available to participating securities									(206)	(308)	(1,350)
Less: Undistributed net income available to participating securities									(410)	(601)
Undistributed and distributed net income available to common shareholders									230,815	230,307	229,958
Add: Undistributed net income allocated to participating securities									410	601
Less: Undistributed net income reallocated to participating securities									(408)	(600)
Undistributed and distributed net income available to common shareholders									$ 230,817	$ 230,308	$ 229,958
Weighted average shares outstanding for basic net income per share									56,591,000	60,908,000	61,292,000
Effect of dilutive securities									380,000	168,000	195,000
Weighted average shares outstanding for diluted net income per share									56,971,000	61,076,000	61,487,000
Basic	$ 1.07	$ 1.10	$ 0.94	$ 0.96	$ 1.03	$ 1.06	$ 0.81	$ 0.89	$ 4.08	$ 3.78	$ 3.75
Diluted	$ 1.07	$ 1.09	$ 0.93	$ 0.96	$ 1.02	$ 1.05	$ 0.80	$ 0.89	$ 4.05	$ 3.77	$ 3.74
Antidilutive stock options									0	843,000	678,000