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Supplemental Financial Information - Other Non-Current Assets (Detail) - USD ($) $ in Millions | Jan. 29, 2021 | Apr. 24, 2020
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Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] |  |
Deferred tax assets | $ 224 | $ 220
Operating lease ROU assets | 120 | 137
Other assets | 348 | 342
Other non-current assets | $ 692 | $ 699

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