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Commissions Expense - Summary of Commissions Expense (Detail) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of fee and commission expense [line items]      
Fee and commission expense $ 3,530,951 $ 3,090,218 $ 3,308,327
Commissions related to debt securities [member]      
Disclosure of fee and commission expense [line items]      
Fee and commission expense 1,921    
Commissions related to trading and foreign exchange transactions [member]      
Disclosure of fee and commission expense [line items]      
Fee and commission expense 153,022 177,385 315,682
Commissions paid ATM exchange [member]      
Disclosure of fee and commission expense [line items]      
Fee and commission expense 2,367,455 1,906,525 1,596,637
Checkbooks commissions and clearing houses [Member]      
Disclosure of fee and commission expense [line items]      
Fee and commission expense 632,278 610,483 684,690
Credit cards and foreign trade commissions [Member]      
Disclosure of fee and commission expense [line items]      
Fee and commission expense $ 376,275 $ 395,825 $ 711,318