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Stockholders' Equity (Stock Repurchased During Period) (Detail) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
12 Months Ended
Sep. 02, 2012
Aug. 28, 2011
Aug. 29, 2010
Stock Repurchase Programs [Line Items]      
Shares Repurchased (000's) 7,272 8,939 9,943
Average Price per Share $ 84.75 $ 71.74 $ 57.14
Total Cost $ 617 $ 641 $ 568