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Loss Allowance for Expected Credit Losses On Credit Exposures Not Measured at Fair Value Through Profit or Loss - Additional Information (Detail) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Allowance For Impairment [line items]    
Contractual amount outstanding on loans and other facilities written off by bank $ 4,992,035 $ 6,565,815
External Restructuring Adjustment [Member]    
Disclosure Of Allowance For Impairment [line items]    
Adjustment to allowances based on assumption about future with significant risk of resulting in material adjustments 1,986,000  
Covid19 Adjustment [Member]    
Disclosure Of Allowance For Impairment [line items]    
Adjustment to allowances based on assumption about future with significant risk of resulting in material adjustments 0 5,553,719
Government securities [member]    
Disclosure Of Allowance For Impairment [line items]    
Expected credit losses 16,304 9,002
Other Financial Assets [member]    
Disclosure Of Allowance For Impairment [line items]    
Expected credit losses 26,448 28,569
Bank Loan [member]    
Disclosure Of Allowance For Impairment [line items]    
Loan Portfolio Sales Profits 90,693 55,768
Loan Portfolio Sales Losses   40
Corporate Bonds [Member]    
Disclosure Of Allowance For Impairment [line items]    
Expected credit losses 530 1,862
Financial Trust [member]    
Disclosure Of Allowance For Impairment [line items]    
Expected credit losses 13 165
Local Government Securities [member]    
Disclosure Of Allowance For Impairment [line items]    
Expected credit losses $ 3,210 $ 6,232