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v3.20.1

Description of Business and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Apr. 24, 2020 | Jul. 27, 2019 | Apr. 26, 2019
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Operating lease ROU assets, net of deferred rent and lease restructuring liabilities | $ 137 |  | $ 0
Operating lease liabilities | $ 144 |  |
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 | 5 years |  |
Maximum | Customer Contracts/Relationships |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 5 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 | 5 years |  |
ASC 842 |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Operating lease ROU assets, net of deferred rent and lease restructuring liabilities |  | $ 149 |
Operating lease liabilities |  | 158 |
Cumulative-effect adjustment to retained earnings |  | $ (6) | $ 6

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