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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
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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

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