Associate Benefit Plans (Summary Of Stock Option Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 01, 2012	Aug. 27, 2011	Aug. 28, 2010
Associate Benefit Plans [Abstract]
Shares outstanding-beginning of year	1,697	2,394	2,759
Shares granted	308	364	515
Shares exercised	(538)	(1,060)	(879)
Shares cancelled/forfeited	(90)	(1)	(1)
Shares outstanding-end of year	1,377	1,697	2,394
Shares exercisable-end of year	505	584	1,174
Weighted average exercise price, shares outstanding at beginning of year	$ 44.17	$ 38.76	$ 33.65
Weighted average exercise price, shares granted	$ 66.69	$ 54.67	$ 44.17
Weighted average exercise price, shares exercised	$ 41.65	$ 35.56	$ 25.95
Weighted average exercise price, shares cancelled/forfeited	$ 50.39	$ 14.26	$ 14.45
Weighted average exercise price, shares outstanding at end of year	$ 49.79	$ 44.17	$ 38.76
Weighted average exercise price, shares exercisable at end of year	$ 42.68	$ 39.46	$ 34.42
Weighted average fair value of options granted	$ 17.67	$ 14.48	$ 12.49