Goodwill and Purchased Intangible Assets - Schedule of Amortization of Purchased Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	Apr. 29, 2023	Apr. 30, 2022
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 70	$ 77	$ 212	$ 240
Total
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	230	272	688	838
Cost of sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	160	180	476	583
Operating expenses
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 70	$ 92	$ 212	$ 255