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ACCOUNTING STANDARDS AND BASIS OF PREPARATION - Reserves (Detail) | Dec. 31, 2019
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ACCOUNTING STANDARDS AND BASIS OF PREPARATION |
Current income required to be appropriate to legal reserve (as a percent) | 5.00%
Required legal reserve, as percent to capital stock and capital adjustment | 20.00%

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- Definition Disclosure of significant accounting policies. + References No definition available. + Details
Name: | supv_DisclosureOfSignificantAccountingPoliciesAbstract
Namespace Prefix: | supv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The percentage of current year income required to be appropriated to legal reserve. + References No definition available. + Details
Name: | supv_PercentageOfCurrentYearIncomeToLegalReserve
Namespace Prefix: | supv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The percentage of required legal reserve coming from income as percentage of capital stock and capital adjustment. The percentage is a cumulative percentage from required reserve per year. + References No definition available. + Details
Name: | supv_RequiredLegalReserveAsPercentOfCapitalStockAndCapitalAdjustment
Namespace Prefix: | supv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant