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Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Apr. 26, 2019 | Jan. 25, 2019 | Apr. 27, 2018
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Components of Deferred Tax Assets and Liabilities [Abstract] |  |  |
Reserves and accruals | $ 50 |  | $ 57
Net operating loss and credit carryforwards | 139 |  | 131
Tax expense related to deferred tax assets for equity-based compensation awards | 16 | $ 6 | 22
Deferred revenue | 205 |  | 156
Other | 16 |  | 29
Gross deferred tax assets | 426 |  | 395
Valuation allowance | (123) |  | (109)
Deferred tax assets, net of valuation allowance | 303 |  | 286
Prepaids and accruals | 31 |  | 21
Acquired intangibles | 32 |  | 29
Property and equipment | 31 |  | 25
Other | 10 |  | 14
Total deferred tax liabilities | 104 |  | 89
Deferred tax assets, net of valuation allowance and deferred tax liabilities | $ 199 |  | $ 197

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