Segment Information and Major Customers - Summary of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 26, 2024	Oct. 28, 2023
Segment Reporting Information [Line Items]
Revenue	$ 13,841	$ 14,668
Gross margin	9,121	9,557
Operating segments
Segment Reporting Information [Line Items]
Gross margin	9,590	9,841
Operating segments | Americas
Segment Reporting Information [Line Items]
Revenue	8,252	9,022
Gross margin	5,740	5,968
Operating segments | EMEA
Segment Reporting Information [Line Items]
Revenue	3,588	3,664
Gross margin	2,522	2,545
Operating segments | APJC
Segment Reporting Information [Line Items]
Revenue	2,001	1,982
Gross margin	1,328	1,328
Unallocated corporate items
Segment Reporting Information [Line Items]
Gross margin	$ (469)	$ (284)