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Revenue - Schedule of Internal Risk Ratings for Contract Assets (Details) - USD ($) $ in Millions | Jan. 28, 2023 | Jul. 30, 2022
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | $ 1,421 | $ 1,386
1 to 4 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | 355 | 414
5 to 6 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | 984 | 814
7 and Higher |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | $ 82 | $ 158

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