Goodwill and Purchased Intangible Assets - Schedule of Purchased Intangible Assets with Finite and Indefinite Lives (Details) - USD ($) $ in Millions	Jul. 26, 2025	Jul. 27, 2024
Purchased intangible assets with finite lives:
Gross	$ 12,121	$ 14,077
Accumulated Amortization	(2,946)	(2,884)
Total purchased intangible assets with finite lives, net	9,175	11,193
In-process research and development, with indefinite lives	0	26
Total finite and indefinite lives intangible assets, gross	12,121	14,103
Total finite and indefinite lives intangible assets, net	9,175	11,219
Customer related
Purchased intangible assets with finite lives:
Gross	6,341	6,844
Accumulated Amortization	(1,268)	(829)
Total purchased intangible assets with finite lives, net	5,073	6,015
Technology
Purchased intangible assets with finite lives:
Gross	5,254	6,680
Accumulated Amortization	(1,606)	(2,006)
Total purchased intangible assets with finite lives, net	3,648	4,674
Trade name
Purchased intangible assets with finite lives:
Gross	526	553
Accumulated Amortization	(72)	(49)
Total purchased intangible assets with finite lives, net	$ 454	$ 504