Stock-Based Compensation Plans - Tax Benefits Realized and Intrinsic Value Related to Stock Options Exercised (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Aug. 31, 2014		Sep. 01, 2013		Sep. 02, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Actual tax benefit realized for stock options exercised	$ 27		$ 33		$ 50
Intrinsic value of stock options exercised	$ 76	[1]	$ 94	[1]	$ 137	[1]

[1] (1) The difference between the exercise price and market value of common stock measured at each individual exercise date.