Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 27, 2024	Apr. 29, 2023	Apr. 27, 2024	Apr. 29, 2023
Earnings Per Share [Abstract]
Net income	$ 1,886	$ 3,212	$ 8,158	$ 8,655
Weighted-average shares—basic (in shares)	4,042	4,089	4,051	4,100
Effect of dilutive potential common shares (in shares)	18	21	20	11
Weighted-average shares—diluted (in shares)	4,060	4,110	4,071	4,111
Net income per share—basic (in dollars per share)	$ 0.47	$ 0.79	$ 2.01	$ 2.11
Net income per share—diluted (in dollars per share)	$ 0.46	$ 0.78	$ 2.00	$ 2.11
Antidilutive employee share-based awards, excluded (in shares)	11	24	58	75