Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 02, 2013	Feb. 25, 2012	Mar. 02, 2013	Feb. 25, 2012
Net Income Per Share [Abstract]
Net income as reported	$ 56,079	$ 60,068	$ 119,266	$ 119,905
Less: Distributed net income available to participating securities	(123)	(40)	(240)	(157)
Less: Undistributed net income allocated to participating securities	(300)	(394)	(644)	(812)
Undistributed and distributed net income available to common shareholders, basic	55,656	59,634	118,382	118,936
Add: Undistributed net income allocated to participating securities	300	394	644	812
Less: Undistributed net income reallocated to participating securities	(299)	(391)	(641)	(808)
Undistributed and distributed net income available to common shareholders, diluted	$ 55,657	$ 59,637	$ 118,385	$ 118,940
Weighted average shares outstanding for basic net income per share	62,699	62,616	62,538	62,451
Effect of dilutive securities	309	392	316	367
Weighted average shares outstanding for diluted net income per share	63,008	63,008	62,854	62,818
Net income per share, Basic	$ 0.89	$ 0.95	$ 1.89	$ 1.90
Net income per share, Diluted	$ 0.88	$ 0.95	$ 1.88	$ 1.89
Antidilutive stock options	0	0	0	0