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. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Earnings Per Share [Abstract]
Net income	$ 10,180	$ 10,320	$ 12,613
Weighted-average shares—basic (In shares)	3,976	4,043	4,093
Effect of dilutive potential common shares (in shares)	22	19	12
Weighted-average shares—diluted (in shares)	3,998	4,062	4,105
Net income per share—basic (in dollars per share)	$ 2.56	$ 2.55	$ 3.08
Net income per share—diluted (in dollars per share)	$ 2.55	$ 2.54	$ 3.07
Antidilutive employee share-based awards, excluded (in shares)	78	82	86