Net Income Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 01, 2012	Nov. 26, 2011
Net Income Per Share [Abstract]
Net income as reported	$ 63,187	$ 59,837
Less: Distributed net income available to participating securities	(117)	(119)
Less: Undistributed net income available to participating securities	(343)	(418)
Undistributed and distributed net income available to common shareholders, basic	62,727	59,300
Add: Undistributed net income allocated to participating securities	343	418
Less: Undistributed net income reallocated to participating securities	(342)	(416)
Undistributed and distributed net income available to common shareholders, diluted	$ 62,728	$ 59,302
Weighted average shares outstanding for basic net income per share	62,378,000	62,285,000
Effect of dilutive securities	323,000	342,000
Weighted average shares outstanding for diluted net income per share	62,701,000	62,627,000
Net income per share, Basic	$ 1.01	$ 0.95
Net income per share, Diluted	$ 1.00	$ 0.95
Antidilutive stock options	0	310