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v3.22.1

Segment, Geographic, and Significant Customer Information - Schedule of Financial Information by Segment (Parenthetical) (Details) - USD ($) $ in Millions | 12 Months Ended
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Apr. 29, 2022 | Apr. 30, 2021 | Apr. 24, 2020
Segment Reporting [Abstract] |  |  |
Unallocated cost of revenue stock-based compensation expense | $ 17 | $ 14 | $ 13
Unallocated cost of revenue amortization of intangible assets | $ 33 | $ 41 | $ 39

X
- Definition Unallocated cost of revenue amortization of intangible assets. + References No definition available. + Details
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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
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