Goodwill and Purchased Intangible Assets - Schedule of Amortization of Purchased Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 265	$ 66	$ 530	$ 133
Total
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	605	246	1,195	499
Cost of sales
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	340	180	665	366
Operating expenses
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangible assets	$ 265	$ 66	$ 530	$ 133