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Revenue - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Apr. 28, 2023 | Apr. 29, 2022
Disaggregation of Revenue [Abstract] |  |
Revenue recognized | $ 2,171 | $ 2,062

X
- Definition Amount of revenue recognized that was previously included in balance of contract with customer liability obligation as of the beginning of the period. + References No definition available. + Details
Name: | ntap_RevenueRecognizedFromBeginningContractWithCustomerLiability
Namespace Prefix: | ntap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration