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FINANCIAL TRUSTS - Credimas (Details) $ in Thousands	Dec. 31, 2019 ARS ($)
Credimas Financial Trust
Financial Trust
Original principal amount	$ 16,000

X

- Definition

Disclosure of financial trust [line items]

+ References

No definition available.

+ Details

Name:	supv_DisclosureOfFinancialTrustLineItems
Namespace Prefix:	supv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The original amount of a financial trust.

+ References

No definition available.

+ Details

Name:	supv_FinancialTrustOriginalPrincipalAmount
Namespace Prefix:	supv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	supv_FinancialTrustAxis=supv_CredimasFinancialTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: