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Other Debt Securities - Additional Information (Detail) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Government Securities [member]    
Disclosure of other debt securities at fair value through profit or loss [line items]    
Unrealised Gain $ 445,822 $ 644
Unrealised Loss (68,438) (618,033)
Central Bank Bills [member]    
Disclosure of other debt securities at fair value through profit or loss [line items]    
Unrealised Loss $ (185,277) $ (80,771)