Segment Information and Major Customers - Summary of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024
Segment Reporting Information [Line Items]
Revenue	$ 13,991	$ 12,791	$ 27,832	$ 27,459
Gross margin	9,111	8,217	18,232	17,774
Operating segments
Segment Reporting Information [Line Items]
Gross margin	9,614	8,532	19,204	18,373
Operating segments | Americas
Segment Reporting Information [Line Items]
Revenue	8,202	7,510	16,454	16,532
Gross margin	5,545	4,932	11,285	10,901
Operating segments | EMEA
Segment Reporting Information [Line Items]
Revenue	3,855	3,484	7,444	7,148
Gross margin	2,750	2,373	5,272	4,919
Operating segments | APJC
Segment Reporting Information [Line Items]
Revenue	1,934	1,798	3,934	3,779
Gross margin	1,320	1,226	2,648	2,554
Unallocated corporate items
Segment Reporting Information [Line Items]
Gross margin	$ (503)	$ (315)	$ (972)	$ (599)