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v3.25.3

Segment Geographic and Significant Customer Information - Schedule of Financial Information by Segment (Parenthetical) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 24, 2025 | Oct. 25, 2024 | Oct. 24, 2025 | Oct. 25, 2024
Segment Reporting [Abstract] |  |  |  |
Unallocated cost of revenue stock-based compensation expense | $ 7 | $ 8 | $ 14 | $ 15
Unallocated cost of revenue amortization of intangible assets | $ 3 | $ 9 | $ 6 | $ 17

X
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Namespace Prefix: | ntap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unallocated cost of revenue stock-based compensation expense. + References No definition available. + Details
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Namespace Prefix: | ntap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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