Segment Information and Major Customers - Summary of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024
Segment Reporting Information [Line Items]
Revenue	$ 14,149	$ 12,702	$ 41,981	$ 40,161
Gross margin	9,278	8,273	27,510	26,047
Operating segments
Segment Reporting Information [Line Items]
Gross margin	9,703	8,673	28,907	27,046
Operating segments | Americas
Segment Reporting Information [Line Items]
Revenue	8,380	7,372	24,834	23,904
Gross margin	5,676	5,006	16,960	15,906
Operating segments | EMEA
Segment Reporting Information [Line Items]
Revenue	3,736	3,458	11,179	10,606
Gross margin	2,659	2,406	7,931	7,324
Operating segments | APJC
Segment Reporting Information [Line Items]
Revenue	2,034	1,873	5,968	5,652
Gross margin	1,367	1,262	4,016	3,816
Unallocated corporate items
Segment Reporting Information [Line Items]
Gross margin	$ (425)	$ (400)	$ (1,397)	$ (999)