Goodwill and Purchased Intangible Assets - Schedule of Amortization of Purchased Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 27, 2024	Jan. 28, 2023
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 66	$ 71	$ 133	$ 142
Total
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	246	229	499	458
Cost of sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	180	158	366	316
Operating expenses
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 66	$ 71	$ 133	$ 142