Summary Stock Option Transactions (Detail) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Nov. 25, 2012
Number of options
Number of options outstanding at beginning balance	3,161
Exercised	(256)
Number of options outstanding at ending balance	2,905
Weighted- average exercise price
Weighted- average exercise price beginning Balance	$ 40.90
Exercised	$ 38.42
Weighted- average exercise price ending balance	$ 41.12
Weighted-average remaining contractual term
Weighted-average remaining contractual term (in years)	1 year 10 months 13 days
Aggregate intrinsic value
Aggregate intrinsic value	$ 165	[1]

[1] The difference between the exercise price and market value of common stock at November 25, 2012.