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v3.19.2

Description of Business and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 27, 2018 | Apr. 26, 2019
Minimum |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Capitalized commissions amortization period |  | 1 year
Minimum | Developed Technology |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 3 years
Minimum | Customer Contracts/Relationships |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 2 years
Minimum | Covenants not to Compete |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 2 years
Minimum | Trademarks and Trade Names |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 2 years
Maximum |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Capitalized commissions amortization period |  | 3 years
Maximum | Developed Technology |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 6 years
Maximum | Customer Contracts/Relationships |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 8 years
Maximum | Covenants not to Compete |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 3 years
Maximum | Trademarks and Trade Names |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life |  | 7 years
ASU 2016-16 |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |
Cumulative-effect adjustment to decrease retained earnings | $ (51) |

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- Definition Description of Business and Significant Accounting Policies. + References No definition available. + Details
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- Definition Amount of the related income tax effect of a cumulative effect on retained earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 + Details
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