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Loss Allowance for Expected Credit Losses On Credit Exposures Not Measured at Fair Value Through Profit or Loss - Summary of Maximum exposure to credit risk for Loans and Other Financing (Detail) - ARS ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 15, 2021
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 361,992,565 | $ 403,541,419 |
Percentage of maximum exposure to credit risk | 100.00% | 100.00% |
Bottom of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD |  | 33.01% |
Impairments stage 1 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 344,792,718 | $ 375,527,554 |
Percentage of maximum exposure to credit risk | 95.25% | 93.06% |
Impairments stage 2 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 13,901,118 | $ 23,440,537 |
Percentage of maximum exposure to credit risk | 3.84% | 5.81% |
Impairments Stage 3 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk |  | $ 4,573,328 | $ 3,298,729
Percentage of maximum exposure to credit risk | 0.91% | 1.13% |
Performing [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 350,275,528 | $ 388,063,124 |
Percentage of maximum exposure to credit risk | 96.76% | 96.17% |
Performing [member] | Impairments stage 1 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 341,628,847 | $ 374,333,529 |
Performing [member] | Impairments stage 2 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | 8,646,681 | 13,729,595 |
Past due but not impaired [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 8,418,308 | $ 10,904,967 |
Percentage of maximum exposure to credit risk | 2.33% | 2.70% |
Past due but not impaired [member] | Bottom of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 33.01% | 33.01% |
Past due but not impaired [member] | Top of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 99.99% | 99.99% |
Past due but not impaired [member] | Impairments stage 1 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 3,163,871 | $ 1,194,025 |
Past due but not impaired [member] | Impairments stage 2 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | 5,254,437 | 9,710,942 |
High grade [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 287,944,842 | $ 307,468,531 |
Percentage of maximum exposure to credit risk | 79.54% | 76.20% |
High grade [member] | Bottom of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 0.00% | 0.00% |
High grade [member] | Top of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 3.50% | 3.50% |
High grade [member] | Impairments stage 1 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 287,115,181 | $ 307,355,334 |
High grade [member] | Impairments stage 2 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | 829,661 | 113,197 |
Standard grade [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 45,040,792 | $ 51,006,949 |
Percentage of maximum exposure to credit risk | 12.44% | 12.64% |
Standard grade [member] | Bottom of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 3.51% | 3.51% |
Standard grade [member] | Top of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 7.00% | 7.00% |
Standard grade [member] | Impairments stage 1 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 42,527,498 | $ 48,100,613 |
Standard grade [member] | Impairments stage 2 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | 2,513,294 | 2,906,336 |
Sub- standard grade [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 17,289,894 | $ 29,587,644 |
Percentage of maximum exposure to credit risk | 4.78% | 7.33% |
Sub- standard grade [member] | Bottom of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 7.01% | 7.01% |
Sub- standard grade [member] | Top of range [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Range PD | 33.00% | 33.00% |
Sub- standard grade [member] | Impairments stage 1 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 11,986,168 | $ 18,877,582 |
Sub- standard grade [member] | Impairments stage 2 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | 5,303,726 | 10,710,062 |
Impaired [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 3,298,729 | $ 4,573,328 |
Percentage of maximum exposure to credit risk | 0.91% | 1.13% |
Range PD | 100.00% | 100.00% |
Impaired [member] | Impairments Stage 3 [member] |  |  |
Disclosure of internal credit grades [line items] |  |  |
Maximum exposure to credit risk | $ 3,298,729 |  |

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