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Segment Geographic and Significant Customer Information - Schedule of Financial Information by Segment (Parenthetical) (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jul. 26, 2024 | Jul. 28, 2023
Segment Reporting [Abstract] |  |
Unallocated cost of revenue stock-based compensation expense | $ 7 | $ 7
Unallocated cost of revenue amortization of intangible assets | $ 8 | $ 9

X
- Definition Unallocated cost of revenue amortization of intangible assets. + References No definition available. + Details
Name: | ntap_UnallocatedCostOfRevenueAmortizationOfIntangibleAssets
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
Name: | ntap_UnallocatedCostOfRevenueStockBasedCompensationExpense
Namespace Prefix: | ntap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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