v2.4.0.6
Stock-Based Compensation Plans (Tax Benefits Realized And Intrinsic Value Related To Total Stock Options Exercised) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Nov. 20, 2011
Nov. 21, 2010
Stock-Based Compensation Plans [Abstract]    
Actual tax benefit realized for stock options exercised $ 9 $ 29
Intrinsic value of stock options exercised $ 26 [1] $ 81 [1]
[1] The difference between the exercise price and market value of common stock measured at each individual exercise date.