Income Taxes (Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 01, 2012	Aug. 27, 2011	Aug. 28, 2010
Income Taxes [Abstract]
Current: Federal	$ 128,640	$ 99,034	$ 74,917
Current: State and local	18,421	15,986	10,916
Current: Total	147,061	115,020	85,833
Deferred: Federal	4,797	15,385	4,303
Deferred: State and local	1,253	139	319
Deferred: Total	6,050	15,524	4,622
Total	$ 153,111	$ 130,544	$ 90,455