Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024
Earnings Per Share [Abstract]
Net income	$ 2,491	$ 1,886	$ 7,630	$ 8,158
Weighted-average shares—basic (in shares)	3,972	4,042	3,981	4,051
Effect of dilutive potential common shares (in shares)	30	18	23	20
Weighted-average shares—diluted (in shares)	4,002	4,060	4,004	4,071
Net income per share—basic (in dollars per share)	$ 0.63	$ 0.47	$ 1.92	$ 2.01
Net income per share—diluted (in dollars per share)	$ 0.62	$ 0.46	$ 1.91	$ 2.00
Antidilutive employee share-based awards, excluded (in shares)	11	11	61	58