Stock-Based Compensation (Summary Of Stock Options) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Feb. 25, 2012 Y
Stock-Based Compensation [Abstract]
Outstanding on August 27, 2011, Options	1,697
Granted, Options	308
Exercised, Options	(408)
Canceled, Options	(76)
Outstanding on February 25, 2012, Options	1,521
Exercisable on February 25, 2012, Options	634
Outstanding on August 27, 2011, Weighted-Average Exercise Price per Share	$ 44.17
Granted, Weighted-Average Exercise Price per Share	$ 66.69
Exercised, Weighted-Average Exercise Price per Share	$ 41.16
Canceled, Weighted-Average Exercise Price per Share	$ 49.60
Outstanding on February 25, 2012, Weighted-Average Exercise Price per Share	$ 49.27
Exercisable on February 25, 2012, Weighted-Average Exercise Price per Share	$ 42.79
Outstanding on February 25, 2012, Weighted-Average Remaining Contractual Term, in years	4.59
Exercisable on February 25, 2012, Weighted-Average Remaining Contractual Term, in years	3.37
Outstanding on February 25, 2012, Aggregate Intrinsic Value	$ 46,120
Exercisable on February 25, 2012, Aggregate Intrinsic Value	$ 23,321