Goodwill and Purchased Intangible Assets - Schedule of Amortization of Purchased Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 244	$ 297	$ 774	$ 430
Total
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	513	551	1,708	1,050
Cost of sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	269	254	934	620
Operating expenses
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 244	$ 297	$ 774	$ 430