Stockholders' Equity - Additional Information (Details) - USD ($)		12 Months Ended
	Aug. 23, 2022	Jul. 30, 2022	Jul. 31, 2021	Jul. 25, 2020
Stockholders' Equity Note [Abstract]
Remaining authorized repurchase amount		$ 15,200,000,000
Class of Stock [Line Items]
Cash dividends paid per common share (in dollars per share)		$ 1.50	$ 1.46	$ 1.42
Payment of dividends		$ 6,224,000,000	$ 6,163,000,000	$ 6,016,000,000
Cash dividends declared, per common share (in dollars per share)		$ 1.50	$ 1.46	$ 1.42
Stock repurchase program
Class of Stock [Line Items]
Stock repurchases pending settlement		$ 70,000,000	$ 25,000,000	$ 0
Subsequent event
Class of Stock [Line Items]
Cash dividends declared, per common share (in dollars per share)	$ 0.38