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Equity And Comprehensive Income (Stock Repurchased During The Period) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 12, 2012	Feb. 13, 2011	Feb. 12, 2012	Feb. 13, 2011
Equity And Comprehensive Income [Abstract]
Shares Repurchased	1,759	1,315	3,881	3,751
Average Price per Share	$ 82.20	$ 71.75	$ 81.84	$ 65.23
Total Cost	$ 145	$ 95	$ 318	$ 245

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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