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Commitments and Contingencies - Schedule of Other Commitments (Details) - USD ($) $ in Millions | 12 Months Ended
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Jul. 31, 2021 | Jul. 25, 2020 | Jul. 27, 2019
Others |  |  |
Loss Contingencies [Line Items] |  |  |
Compensation expense related to acquisitions | $ 262 | $ 214 | $ 313

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- Details
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