Balance Sheet and Other Details - Property and Equipment, Net (Details) - USD ($) $ in Millions	Jan. 25, 2025	Jul. 27, 2024
Property, Plant and Equipment [Line Items]
Operating lease assets	$ 77	$ 115
Total gross property and equipment	9,493	9,873
Less: accumulated depreciation and amortization	(7,501)	(7,783)
Total	1,992	2,090
Land, buildings, and building and leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property and equipment, excluding operating lease assets	3,979	4,247
Production, engineering, computer and other equipment and related software
Property, Plant and Equipment [Line Items]
Gross property and equipment, excluding operating lease assets	5,070	5,160
Furniture, fixtures and other
Property, Plant and Equipment [Line Items]
Gross property and equipment, excluding operating lease assets	$ 367	$ 351