Goodwill and Purchased Intangible Assets - Schedule of Purchased Intangible Assets With Finite and Indefinite Lives (Details) - USD ($) $ in Millions	Oct. 25, 2025	Jul. 26, 2025
Finite-Lived Intangible Assets, Net [Abstract]
Gross	$ 12,075	$ 12,121
Accumulated Amortization	(3,362)	(2,946)
Total	8,713	9,175
Customer related
Finite-Lived Intangible Assets, Net [Abstract]
Gross	6,340	6,341
Accumulated Amortization	(1,488)	(1,268)
Total	4,852	5,073
Technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross	5,209	5,254
Accumulated Amortization	(1,791)	(1,606)
Total	3,418	3,648
Trade name
Finite-Lived Intangible Assets, Net [Abstract]
Gross	526	526
Accumulated Amortization	(83)	(72)
Total	$ 443	$ 454