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v3.21.1

Fair Value Measurements - Additional Information (Details) | 3 Months Ended
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Feb. 28, 2021 USD ($)
Fair Value Disclosures [Abstract] |
Cash equivalents maximum maturity period | 3 months
Transfers between fair value measurement category levels | $ 0

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- Definition Cash equivalents maximum maturity period new. + References No definition available. + Details
Name: | snx_CashEquivalentsMaximumMaturityPeriodNew
Namespace Prefix: | snx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Transfers between fair value measurement category levels. + References No definition available. + Details
Name: | snx_TransfersBetweenFairValueMeasurementCategoryLevels
Namespace Prefix: | snx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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