CONTRIBUTION TO THE DEPOSIT INSURANCE SYSTEM - (Details) - ARS ($) $ in Thousands	May 01, 2020	Mar. 31, 2019
CONTRIBUTION TO THE DEPOSIT INSURANCE SYSTEM
Insurance coverage of demand and time deposits	$ 1,500	$ 1,000

The amount of insurance coverage of demand and time deposits of customers in a bank.

No definition available.

Name:	supv_InsuranceCoverageOfDemandDepositsAndTimeDeposits
Namespace Prefix:	supv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant