Segment Information and Major Customers - Summary of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2023	Jan. 29, 2022	Jan. 28, 2023	Jan. 29, 2022
Segment Reporting Information [Line Items]
Revenue	$ 13,592	$ 12,720	$ 27,224	$ 25,620
Gross margin	8,427	8,049	16,773	16,102
Operating segments
Segment Reporting Information [Line Items]
Gross margin	8,687	8,328	17,269	16,649
Operating segments | Americas
Segment Reporting Information [Line Items]
Revenue	7,825	7,146	15,738	14,706
Gross margin	4,920	4,611	9,904	9,486
Operating segments | EMEA
Segment Reporting Information [Line Items]
Revenue	3,728	3,564	7,404	6,867
Gross margin	2,469	2,381	4,795	4,509
Operating segments | APJC
Segment Reporting Information [Line Items]
Revenue	2,039	2,010	4,082	4,046
Gross margin	1,298	1,337	2,571	2,654
Unallocated corporate items
Segment Reporting Information [Line Items]
Gross margin	$ (260)	$ (279)	$ (496)	$ (547)