Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 01, 2014	Mar. 02, 2013	Mar. 01, 2014	Mar. 02, 2013
Net Income Per Share [Abstract]
Net income as reported	$ 49,512	$ 56,079	$ 108,558	$ 119,266
Less: Distributed net income available to participating securities	(116)	(123)	(248)	(240)
Less: Undistributed net income available to participating securities	(221)	(300)	(514)	(644)
Undistributed and distributed net income available to common shareholders, basic	49,175	55,656	107,796	118,382
Add: Undistributed net income allocated to participating securities	221	300	514	644
Less: Undistributed net income reallocated to participating securities	(220)	(299)	(512)	(641)
Undistributed and distributed net income available to common shareholders, diluted	$ 49,176	$ 55,657	$ 107,798	$ 118,385
Weighted average shares outstanding for basic net income per share	61,743	62,699	62,258	62,538
Effect of dilutive securities	307	309	306	316
Weighted average shares outstanding for diluted net income per share	62,050	63,008	62,564	62,854
Net income per share, Basic	$ 0.80	$ 0.89	$ 1.73	$ 1.89
Net income per share, Diluted	$ 0.79	$ 0.88	$ 1.72	$ 1.88
Antidilutive stock options	0	0	392	0