Stock-Based Compensation Plans - Summary of Stock Option Transactions (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	6 Months Ended
	Feb. 16, 2014
Number of options
Number of options outstanding at September 1, 2013	1,947
Exercised	(295)
Number of options outstanding at February 16, 2014	1,652
Weighted-average exercise price
Weighted-average exercise price at September 1, 2013	$ 39.70
Exercised	$ 36.56
Weighted-average exercise price at February 16, 2014	$ 40.26
Weighted Average Remaining Contractual Term [Abstract]
Weighted-average remaining contractual term (in years)	1 year 0 months 7 days
Aggregate intrinsic value
Aggregate intrinsic value	$ 125	[1]

[1] The difference between the exercise price and the market value of common stock at February 16, 2014.