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Loss Allowance for Expected Credit Losses On Credit Exposures Not Measured at Fair Value Through Profit or Loss - Summary Of Detailed Information Of Exposures And Gross Carrying Impairment Allowance Of Goverment Securities At Fair Value (Detail) - ARS ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 261,934,556 | $ 268,683,871
Percentage Of Impairment Allowances Exposures Of Government Securities Gross Carry Forward | 100.00% | 100.00%
Stage 1 |  |
Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 261,934,556 | $ 268,683,871
Percentage Of Impairment Allowances Exposures Of Government Securities Gross Carry Forward | 100.00% | 100.00%
Local Government Securities [member] | Financial assets at fair value through other comprehensive income, category [member] |  |
Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 124,853,842 | $ 67,604,659
Percentage Of Impairment Allowances Exposures Of Government Securities Gross Carry Forward | 47.67% | 25.16%
Local Government Securities [member] | Stage 1 | Financial assets at fair value through other comprehensive income, category [member] |  |
Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 124,853,842 | $ 67,604,659
Central Bank of Argentina Bills [member] |  |
Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 132,970,751 | $ 194,225,233
Percentage Of Impairment Allowances Exposures Of Government Securities Gross Carry Forward | 50.76% | 72.29%
Central Bank of Argentina Bills [member] | Stage 1 |  |
Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 132,970,751 | $ 194,225,233
Foreign Government securities [member] |  |
Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 4,109,963 | $ 6,853,979
Percentage Of Impairment Allowances Exposures Of Government Securities Gross Carry Forward | 1.57% | 2.55%
Foreign Government securities [member] | Stage 1 |  |
Disclosure In Tabular Form Of Exposures Gross Of Impairment Allowances By Stage In Respect Of Government Securities At Fair Value Through Other Comprehensive Income [Line Items] |  |
Impairment Losses Exposures And Gross Carrying Amount Of Government Securities | $ 4,109,963 | $ 6,853,979

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