Goodwill and Purchased Intangible Assets - Schedule of Goodwill by Reportable Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021
Goodwill [Roll Forward]
Beginning balance	$ 38,168	$ 33,806
Acquisitions & Divestitures	332	4,214
Other	(196)	148
Ending balance	38,304	38,168
Americas
Goodwill [Roll Forward]
Beginning balance	23,673	21,304
Acquisitions & Divestitures	222	2,275
Other	(13)	94
Ending balance	23,882	23,673
EMEA
Goodwill [Roll Forward]
Beginning balance	9,094	8,040
Acquisitions & Divestitures	83	1,019
Other	(115)	35
Ending balance	9,062	9,094
APJC
Goodwill [Roll Forward]
Beginning balance	5,401	4,462
Acquisitions & Divestitures	27	920
Other	(68)	19
Ending balance	$ 5,360	$ 5,401