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OFFSETTING OF FINANCIAL ASSET AND LIABILITIES (Details) - ARS ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Financial Assets And Liabilities [line items]    
Gross amount $ 103,093 $ 423,353
Amount offset 40,851 (72,673)
Net in Financial Statements 143,944 350,680
Amounts subject to a master netting arrangement not offset, Financial asset / (Financial liability) (3,143,567) (3,115,913)
Collateral 487,207 827,175
Net amount (2,656,360) (2,288,738)
Credit Card [member]    
Disclosure Of Financial Assets And Liabilities [line items]    
Amounts subject to a master netting arrangement not offset, Financial asset / (Financial liability) (3,143,567) (3,115,913)
Collateral 487,207 827,175
Net amount (2,656,360) (2,288,738)
Derivatives [member]    
Disclosure Of Financial Assets And Liabilities [line items]    
Gross amount 103,093 423,353
Amount offset 40,851 (72,673)
Net in Financial Statements $ 143,944 $ 350,680