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FINANCIAL TRUSTS - Mendoza Trust (Details) - Mendoza Financial Trust $ in Thousands | Dec. 31, 2019 ARS ($)
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Financial Trust |
Liabilities recorded | $ 21,018
Assets in trust | $ 647

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- 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

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- Definition The amount of assets in a financial trust at reporting date. + References No definition available. + Details
Name: | supv_FinancialTrustAssets
Namespace Prefix: | supv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of liabilities recorded in a financial trust at reporting date. + References No definition available. + Details
Name: | supv_FinancialTrustLiabilities
Namespace Prefix: | supv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | supv_FinancialTrustAxis=supv_MendozaFinancialTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |