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ACCOUNTING STANDARDS AND BASIS OF PREPARATION - Reserves (Detail)	Dec. 31, 2019
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
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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

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Namespace Prefix:	supv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant