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Stockholders' Equity - Number and Value of Shares Netted for Employee Taxes (Detail) - Restricted Stock Units - USD ($) shares in Millions, $ in Millions | 3 Months Ended
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Jul. 31, 2020 | Jul. 26, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares withheld for taxes | 1 | 1
Fair value of shares withheld | $ 33 | $ 71

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- Definition Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment arrangement. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement. + References No definition available. + Details
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- Details
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