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DERIVATIVE FINANCIAL INSTRUMENTS - Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 ARS ($)
DERIVATIVE FINANCIAL INSTRUMENTS
Expense generated by derivative financial instruments	$ 713,616

X

- Definition

The amount of trading income (expense) relating to derivative financial instruments. [Refer: Derivatives [member]; Trading income (expense)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Disclosure of derivative financial instruments.

+ References

No definition available.

+ Details

Name:	supv_DisclosureOfDerivativeFinancialInstrumentsAbstract
Namespace Prefix:	supv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration