Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Aug. 29, 2015	May. 30, 2015	Feb. 28, 2015	Nov. 29, 2014	Aug. 30, 2014	May. 31, 2014	Mar. 01, 2014	Nov. 30, 2013	Aug. 29, 2015	Aug. 30, 2014	Aug. 31, 2013
Net Income Per Share [Abstract]
Net income as reported	$ 59,022	$ 63,342	$ 51,527	$ 57,417	$ 62,813	$ 64,696	$ 49,512	$ 59,046	$ 231,308	$ 236,067	$ 237,995
Less: Distributed net income available to participating securities									(1,350)	(481)	(492)
Less: Undistributed net income available to participating securities										(1,146)	(1,289)
Undistributed and distributed net income available to common shareholders, basic									229,958	234,440	236,214
Undistributed net income allocated to participating securities										1,146	1,289
Less: Undistributed net income reallocated to participating securities										(1,140)	(1,283)
Undistributed and distributed net income available to common shareholders, diluted									$ 229,958	$ 234,446	$ 236,220
Weighted average shares outstanding for basic net income per share									61,292	62,026	62,695
Effect of dilutive securities									195	313	316
Weighted average shares outstanding for diluted net income per share									61,487	62,339	63,011
Net income per share, Basic	$ 0.96	$ 1.03	$ 0.84	$ 0.92	$ 1.01	$ 1.04	$ 0.80	$ 0.93	$ 3.75	$ 3.78	$ 3.77
Net income per share, Diluted	$ 0.96	$ 1.03	$ 0.83	$ 0.91	$ 1.01	$ 1.03	$ 0.79	$ 0.93	$ 3.74	$ 3.76	$ 3.75
Antidilutive stock options									678	0	0