Revenue - Schedule of Internal Risk Ratings for Contract Assets (Details) - USD ($) $ in Millions	Jan. 24, 2026	Jul. 26, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Contract asset, gross	$ 3,414	$ 3,299
1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Contract asset, gross	1,326	1,358
5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Contract asset, gross	2,004	1,868
7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Contract asset, gross	$ 84	$ 73