Balance Sheet and Other Details - Property and Equipment, Net (Details) - USD ($) $ in Millions	Jan. 24, 2026	Jul. 26, 2025
Property, Plant and Equipment [Line Items]
Operating lease assets	$ 51	$ 51
Total gross property and equipment	9,705	9,590
Less: accumulated depreciation and amortization	(7,354)	(7,477)
Total	2,351	2,113
Land, buildings, and building and leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property and equipment, excluding operating lease assets	4,060	4,045
Production, engineering, computer and other equipment and related software
Property, Plant and Equipment [Line Items]
Gross property and equipment, excluding operating lease assets	5,293	5,178
Furniture, fixtures and other
Property, Plant and Equipment [Line Items]
Gross property and equipment, excluding operating lease assets	$ 301	$ 316