Segment Information and Major Customers - Summary of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 27, 2024	Jan. 28, 2023
Segment Reporting Information [Line Items]
Revenue	$ 12,791	$ 13,592	$ 27,459	$ 27,224
Gross margin	8,217	8,427	17,774	16,773
Operating segments
Segment Reporting Information [Line Items]
Gross margin	8,532	8,687	18,373	17,269
Operating segments | Americas
Segment Reporting Information [Line Items]
Revenue	7,510	7,825	16,532	15,738
Gross margin	4,932	4,920	10,901	9,904
Operating segments | EMEA
Segment Reporting Information [Line Items]
Revenue	3,484	3,728	7,148	7,404
Gross margin	2,373	2,469	4,919	4,795
Operating segments | APJC
Segment Reporting Information [Line Items]
Revenue	1,798	2,039	3,779	4,082
Gross margin	1,226	1,298	2,554	2,571
Unallocated corporate items
Segment Reporting Information [Line Items]
Gross margin	$ (315)	$ (260)	$ (599)	$ (496)