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Operations of the Bank - Additional Information (Detail) - ARS ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Misiones Provincial Government [member]    
Discription Of Business And Nature Of Operation [line items]    
Deposits liability $ 9,072,397 $ 24,512,527
Deposits liability related to court deposits 1,035,931 1,220,469
Salta Provincial Government [member]    
Discription Of Business And Nature Of Operation [line items]    
Deposits liability 6,455,729 5,701,168
Deposits liability related to court deposits 2,200,818 1,873,083
Jujuy Provincial Government [member]    
Discription Of Business And Nature Of Operation [line items]    
Deposits liability 8,427,277 16,468,955
Deposits liability related to court deposits 1,908,871 1,763,629
Banco del Tucuman SA [member]    
Discription Of Business And Nature Of Operation [line items]    
Deposits liability 17,504,996 21,546,127
Deposits liability related to court deposits 5,129,863 5,338,406
Bank granted loans to government $ 1,838,221 $ 4,317,862