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RISK MANAGEMENT POLICIES - Sensitivity to reasonably possible additional variation in interest rates for next year (Details) - Interest rate risk [member] - ARS ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Interest rate risk |  |
Decrease in the interest rate | $ 260,905,000 | $ (654,631,000)
Increase in the interest rate | $ (260,112,000) | $ 650,546,000
Argentina, Pesos [member] |  |
Interest rate risk |  |
Decrease in the interest rate | 4.00% | 4.00%
Increase in the interest rate | 4.00% | 4.00%
US Dollar [member] |  |
Interest rate risk |  |
Decrease in the interest rate | 2.00% | 2.00%
Increase in the interest rate | 2.00% | 2.00%

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- Definition Decrease in market interest rates net income impact. + References No definition available. + Details
Name: | supv_DecreaseInMarketInterestRatesNetIncomeImpact
Namespace Prefix: | supv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Disclosure Of Interest Rate Risk [line items]. + References No definition available. + Details
Name: | supv_DisclosureOfInterestRateRiskLineItems
Namespace Prefix: | supv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Increase in market interest rates net income impact. + References No definition available. + Details
Name: | supv_IncreaseInMarketInterestRatesNetIncomeImpact
Namespace Prefix: | supv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage of reasonably possible decrease in interest rate + References No definition available. + Details
Name: | supv_PercentageOfReasonablyPossibleDecreaseInInterestRate
Namespace Prefix: | supv_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of reasonably possible increase in interest rate + References No definition available. + Details
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Namespace Prefix: | supv_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_InterestRateRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_CurrencyAxis=currency_ARS
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_CurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |