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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Network1 [Member]
Other Commitments [Line Items]
Cash held in escrow	$ 6.4	$ 6.5

X

- Definition

Business Acquisition, Cost of Acquired Entity, Cash Held in Escrow

+ References

No definition available.

+ Details

Name:	scsc_BusinessAcquisitionCostOfAcquiredEntityCashHeldInEscrow
Namespace Prefix:	scsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=scsc_Network1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: