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Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Apr. 24, 2020 | Apr. 26, 2019 | Jan. 25, 2019
--- | --- | --- | ---
Components of Deferred Tax Assets and Liabilities [Abstract] |  |  |
Reserves and accruals | $ 72 | $ 50 |
Net operating loss and credit carryforwards | 113 | 139 |
Stock-based compensation | 15 | 16 | $ 6
Deferred revenue | 242 | 205 |
Other | 14 | 16 |
Gross deferred tax assets | 456 | 426 |
Valuation allowance | (104) | (123) |
Deferred tax assets, net of valuation allowance | 352 | 303 |
Prepaids and accruals | 49 | 31 |
Acquired intangibles | 40 | 32 |
Property and equipment | 33 | 31 |
Other | 20 | 10 |
Total deferred tax liabilities | 142 | 104 |
Deferred tax assets, net of valuation allowance and deferred tax liabilities | $ 210 | $ 199 |

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