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Organization and Basis of Presentation - Additional Information (Details) | 9 Months Ended
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Aug. 31, 2019 segment market
Segment Reporting Information [Line Items] |
Number of reportable segments | segment | 2
ConcentrixMember |
Segment Reporting Information [Line Items] |
Number of identified vertical markets | market | 10

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- Definition Number Of Identified Vertical Markets + References No definition available. + Details
Name: | snx_NumberOfIdentifiedVerticalMarkets
Namespace Prefix: | snx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=snx_ConcentrixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |