Goodwill and Purchased Intangible Assets - Schedule of Amortization of Purchased Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 29, 2022	Jan. 23, 2021	Jan. 29, 2022	Jan. 23, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 79	$ 39	$ 163	$ 75
Total
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	280	195	566	401
Cost of sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	201	156	403	326
Operating expenses
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 79	$ 39	$ 163	$ 75