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RISK MANAGEMENT POLICIES - Concentration of loans and deposits (Details) - ARS ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Interest rate risk
Loan balance	$ 155,474,329	$ 159,085,216
Deposit, Placement Balance	288,458,097	269,644,541
Liquidity risk [member]
Interest rate risk
Loan balance	$ 165,522,148	$ 171,801,618
Loan, percentage to total portfolio	100.00%	100.00%
Deposit, Placement Balance	$ 288,458,096	$ 269,644,541
Deposits, percentage to total portfolio	100.00%	100.00%
Liquidity risk [member] | 10 Largest Customer [Member]
Interest rate risk
Loan balance	$ 13,155,387	$ 17,090,229
Loan, percentage to total portfolio	7.90%	9.90%
Deposit, Placement Balance	$ 95,276,777	$ 74,049,170
Deposits, percentage to total portfolio	33.00%	27.50%
Liquidity risk [member] | 50 Following Largest Customer [Member]
Interest rate risk
Loan balance	$ 21,266,376	$ 24,209,408
Loan, percentage to total portfolio	12.80%	14.10%
Deposit, Placement Balance	$ 48,457,386	$ 45,028,876
Deposits, percentage to total portfolio	16.80%	16.70%
Liquidity risk [member] | 100 Following Largest Customers [Member]
Interest rate risk
Loan balance	$ 17,301,047	$ 15,301,427
Loan, percentage to total portfolio	10.50%	8.90%
Deposit, Placement Balance	$ 15,105,120	$ 14,280,185
Deposits, percentage to total portfolio	5.20%	5.30%
Liquidity risk [member] | Rest of Customers [Member]
Interest rate risk
Loan balance	$ 113,799,338	$ 115,200,554
Loan, percentage to total portfolio	68.80%	67.10%
Deposit, Placement Balance	$ 129,618,813	$ 136,286,310
Deposits, percentage to total portfolio	44.90%	50.50%

X

- Definition

The amount of deposit liabilities from customers held by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

+ Details

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X

- Definition

The amount of non-derivative financial assets with fixed or determinable payments that are not quoted in an active market, other than: (a) those that the entity intends to sell immediately or in the near term, which shall be classified as held for trading, and those that the entity, upon initial recognition, designates as at fair value through profit or loss; (b) those that the entity, upon initial recognition, designates as available for sale; or (c) those for which the holder may not recover substantially all of its initial investment, other than because of credit deterioration, which shall be classified as available for sale. An interest acquired in a pool of assets that are not loans or receivables (for example, an interest in a mutual fund or a similar fund) is not a loan or receivable. [Refer: Derivative financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 8
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_8_c&doctype=Standard&book=b
-URIDate 2021-03-24

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X

- Definition

Disclosure Of Interest Rate Risk [line items].

+ References

No definition available.

+ Details

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X

- Definition

Percentage of deposits to total portfolio.

+ References

No definition available.

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X

- Definition

The percentage of securities to total portfolio.

+ References

No definition available.

+ Details

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Namespace Prefix:	supv_
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- Details

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