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Revenue - Schedule of Internal Risk Ratings for Contract Assets (Details) - USD ($) $ in Millions | Jan. 27, 2024 | Jul. 29, 2023
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Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | $ 1,797 | $ 1,686
1 to 4 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | 693 | 672
5 to 6 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | 1,042 | 954
7 and Higher |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Contract asset, gross | $ 62 | $ 60

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