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FINANCIAL DERIVATIVES AND HEDGING ACTIVITIES - Narrative (Details) $ in Millions | 3 Months Ended
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Dec. 30, 2022 USD ($) instrument
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Derivative number of instruments terminated | instrument | 3
Derivative, cash received on hedge | $ | $ 7.3

X
- Definition The amount of cash received during the period on settlement of a hedge. + References No definition available. + Details
Name: | us-gaap_DerivativeCashReceivedOnHedge
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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

X
- Definition Derivative Number Of Instruments Terminated + References No definition available. + Details
Name: | var_DerivativeNumberOfInstrumentsTerminated
Namespace Prefix: | var_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration