Revenue - Schedule of Internal Risk Ratings for Contract Assets (Details) - USD ($) $ in Millions	Jul. 26, 2025	Jul. 27, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Gross contract assets	$ 3,299	$ 2,794
1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Gross contract assets	1,358	1,266
5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Gross contract assets	1,868	1,456
7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Gross contract assets	$ 73	$ 72