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Loss Allowance for Expected Credit Losses On Credit Exposures Not Measured at Fair Value Through Profit or Loss - Summary of Exposures Gross of Impairment Allowances (Detail) - ARS ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk $ 24,045,804 $ 46,971,920
Percentage of maximum expose to credit risk 100.00% 100.00%
Local Government Securities [member]    
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk $ 23,781,113 $ 46,168,862
Percentage of maximum expose to credit risk 98.90% 98.29%
Corporate Bonds [Member]    
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk $ 86,487 $ 551,451
Percentage of maximum expose to credit risk 0.36% 1.17%
Financial Trust [member]    
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk $ 178,204 $ 251,607
Percentage of maximum expose to credit risk 0.74% 0.54%
Impairments stage 1 [member]    
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk $ 24,045,804 $ 46,971,920
Percentage of maximum expose to credit risk 100.00% 100.00%
Impairments stage 1 [member] | Local Government Securities [member]    
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk $ 23,781,113 $ 46,168,862
Impairments stage 1 [member] | Corporate Bonds [Member]    
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk 86,487 551,451
Impairments stage 1 [member] | Financial Trust [member]    
Disclosure Of Impairment Loss Allowances Against Loans Of Other Debt [Line Items]    
Maximum exposure to credit risk $ 178,204 $ 251,607