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Net Income per Share - Schedule Of Employee Equity Award (Details) - shares shares in Millions | 3 Months Ended
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Jul. 25, 2025 | Jul. 26, 2024
Earnings Per Share [Abstract] |  |
Employee equity award plans | 0 | 1

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- Definition Employee Equity Award Plans + References No definition available. + Details
Name: | ntap_EmployeeEquityAwardPlans
Namespace Prefix: | ntap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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