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Related Party Transactions - Additional Information (Details)	Aug. 31, 2019	Nov. 30, 2018
MiTAC Holdings | Chairman Emeritus, Board of Directors
Related Party Transaction [Line Items]
Ownership percentage of company's common stock	18.00%	18.00%

X

- Definition

Percentage of consolidated entity shares held by related party.

+ References

No definition available.

+ Details

Name:	snx_RelatedPartyOwnershipPercentageOfEntity
Namespace Prefix:	snx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- 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_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=snx_MiTACHoldingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_BoardOfDirectorsChairmanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: