Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 24, 2026	Jan. 25, 2025	Jan. 24, 2026	Jan. 25, 2025
Earnings Per Share [Abstract]
Net income	$ 3,175	$ 2,428	$ 6,035	$ 5,139
Weighted-average shares—basic (in shares)	3,955	3,981	3,955	3,986
Effect of dilutive potential common shares (in shares)	29	24	32	22
Weighted-average shares—diluted (in shares)	3,984	4,005	3,987	4,008
Net income per share—basic (in dollars per share)	$ 0.80	$ 0.61	$ 1.53	$ 1.29
Net income per share—diluted (in dollars per share)	$ 0.80	$ 0.61	$ 1.51	$ 1.28
Antidilutive employee share-based awards, excluded (in shares)	0	22	0	59