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Restructuring Charges - Additional Information (Detail) | Oct. 29, 2021 | Apr. 30, 2021
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Restructuring Cost and Reserve [Line Items] |  |
Reduction of global work force | 1.00% |
August 2020 and May 2020 Restructuring |  |
Restructuring Cost and Reserve [Line Items] |  |
Reduction of global work force |  | 6.00%

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- Definition Percentage of the total number of positions eliminated as of the balance sheet date since inception of the restructuring plan(s). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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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
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RestructuringPlanAxis=ntap_AugustTwentyTwentyAndMayTwentyTwentyRestructuringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |