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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) | 6 Months Ended
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Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Managing period of hedging forecasted cash flows for operating expenses denominated in foreign currencies | 12 months
Contract maturity period | 12 months

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- Definition Contract Maturing Over Next Months + References No definition available. + Details
Name: | ntct_ContractMaturingOverNextMonths
Namespace Prefix: | ntct_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Hedging Forecasted Cash Flows For Operating Expenses Denominated In Foreign Currencies Managed In Months + References No definition available. + Details
Name: | ntct_HedgingForecastedCashFlowsForOperatingExpensesDenominatedInForeignCurrenciesManagedInMonths
Namespace Prefix: | ntct_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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