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Supplemental Financial Information - Other Non-Current Assets (Detail) - USD ($) $ in Millions | Apr. 26, 2019 | Apr. 27, 2018
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Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] |  |
Deferred tax assets | $ 201 | $ 229
Other assets | 389 | 221
Other non-current assets | $ 590 | $ 450

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