Net Income per Common and Common Equivalent Share - Schedule of Earnings per Share Effect on Net Income and Weighted Average Number of Dilutive Potential Common Stock (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Feb. 18, 2018	Feb. 12, 2017	Feb. 18, 2018	Feb. 12, 2017
Earnings Per Share [Abstract]
Net income available to common stockholders used in basic and diluted net income per common share	$ 701	$ 515	$ 1,341	$ 1,060
Weighted average number of common shares used in basic net income per common share	439,022	439,127	438,494	438,567
RSUs and other	2,546	1,530	2,707	2,001
Weighted average number of common shares and dilutive potential of common stock used in diluted net income per share	441,568	440,657	441,201	440,568