Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Aug. 30, 2014	May 31, 2014	Mar. 01, 2014	Nov. 30, 2013	Aug. 31, 2013	Jun. 01, 2013	Mar. 02, 2013	Dec. 01, 2012	Aug. 30, 2014	Aug. 31, 2013	Sep. 01, 2012
Net Income Per Share [Abstract]
Net income as reported	$ 62,813	$ 64,696	$ 49,512	$ 59,046	$ 56,375	$ 62,354	$ 56,079	$ 63,187	$ 236,067	$ 237,995	$ 259,031
Less: Distributed net income available to participating securities									(481)	(492)	(351)
Less: Undistributed net income available to participating securities									(1,146)	(1,289)	(1,758)
Undistributed and distributed net income available to common shareholders, basic									234,440	236,214	256,922
Add: Undistributed net income allocated to participating securities									1,146	1,289	1,758
Less: Undistributed net income reallocated to participating securities									(1,140)	(1,283)	(1,748)
Undistributed and distributed net income available to common shareholders, diluted									$ 234,446	$ 236,220	$ 256,932
Weighted average shares outstanding for basic net income per share									62,026	62,695	62,434
Effect of dilutive securities									313	316	369
Weighted average shares outstanding for diluted net income per share									62,339	63,011	62,803
Net income per share, Basic	$ 1.01	$ 1.04	$ 0.80	$ 0.93	$ 0.89	$ 0.99	$ 0.89	$ 1.01	$ 3.78	$ 3.77	$ 4.12
Net income per share, Diluted	$ 1.01	$ 1.03	$ 0.79	$ 0.93	$ 0.89	$ 0.98	$ 0.88	$ 1.00	$ 3.76	$ 3.75	$ 4.09
Antidilutive stock options									0	0	0