Goodwill and Purchased Intangible Assets - Schedule of Amortization of Purchased Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 24, 2026	Jan. 25, 2025	Jan. 24, 2026	Jan. 25, 2025
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization of purchased intangible assets	$ 231	$ 265	$ 462	$ 530
Total
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization of purchased intangible assets	466	605	937	1,195
Cost of sales
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization of purchased intangible assets	235	340	475	665
Operating expenses
Intangible Asset, Acquired, Finite-Lived [Line Items]
Amortization of purchased intangible assets	$ 231	$ 265	$ 462	$ 530