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Repo Transactions - Additional Information (Detail) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of repo transactions [line items]      
Profit generated by the bank through repurchase transactions $ 8,536,022 $ 10,667,631 $ 6,750,429
Losses generated by the bank through reverse repurchase transactions 294,566 295,464 $ 691,469
Financial assets delivered as guarantee   1,050,173  
Financial assets off balance sheet transaction 35,108,699 66,925,905  
Government and Private securities [member]      
Disclosure of repo transactions [line items]      
Repurchase transactions   933,682  
Reverse repurchase transactions $ 31,405,801 $ 59,503,764