Net Income per Share - Calculation Of Basic And Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 10,320	$ 12,613	$ 11,812
Weighted-average shares—basic (In shares)	4,043	4,093	4,170
Effect of dilutive potential common shares (in shares)	19	12	22
Weighted-average shares—diluted (in shares)	4,062	4,105	4,192
Net income per share—basic (in dollars per share)	$ 2.55	$ 3.08	$ 2.83
Net income per share—diluted (in dollars per share)	$ 2.54	$ 3.07	$ 2.82
Antidilutive employee share-based awards, excluded (in shares)	82	86	70