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Loss Allowance for Expected Credit Losses On Credit Exposures Not Measured at Fair Value Through Profit or Loss - Summary of Exposure to Credit Risk (Detail) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 267,349,317 | $ 307,633,542
Less: Allowance for ECL | (9,928,122) | (6,901,953)
Loans and receivables | $ 257,421,195 | $ 300,731,589
Percentage of maximum exposure to credit risk | 100.00% | 100.00%
Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 74,292,453 | $ 134,198,106
Percentage of maximum exposure to credit risk | 100.00% | 100.00%
Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 193,056,864 | $ 173,435,436
Percentage of maximum exposure to credit risk | 100.00% | 100.00%
High grade [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 0.00% |
High grade [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 3.50% |
High grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 64,284,032 |
Percentage of credit quality of loans | 86.53% |
Standard grade [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 3.51% |
Standard grade [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 7.00% |
Standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 4,196,819 |
Percentage of credit quality of loans | 5.65% |
Sub-standard grade [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 7.01% |
Sub-standard grade [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 33.00% |
Sub-standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 2,261,352 |
Percentage of credit quality of loans | 3.04% |
Impaired [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 100.00% |
Impaired [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 1,562,674 | $ 1,892,451
Percentage of maximum exposure to credit risk |  | 1.41%
Percentage of credit quality of loans | 2.10% |
Range PD |  | 100.00%
Impaired [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 1,467,196 | $ 3,380,380
Percentage of maximum exposure to credit risk | 0.76% | 1.95%
Range PD | 100.00% | 100.00%
Performing [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 257,094,822 | $ 293,639,805
Percentage of maximum exposure to credit risk | 96.17% | 95.45%
Performing [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 70,742,203 | $ 130,916,592
Percentage of maximum exposure to credit risk | 95.22% | 97.55%
Performing [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 186,352,619 | $ 162,723,213
Percentage of maximum exposure to credit risk | 96.53% | 93.82%
Performing [member] | High grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | $ 121,125,836
Percentage of maximum exposure to credit risk |  | 90.26%
Performing [member] | High grade [member] | Expected credit losses individually assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 0.00%
Performing [member] | High grade [member] | Expected credit losses individually assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 3.50%
Performing [member] | High grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 139,416,249 | $ 113,888,133
Percentage of maximum exposure to credit risk | 72.22% | 65.66%
Performing [member] | High grade [member] | Expected credit losses collectively assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 0.00% | 0.00%
Performing [member] | High grade [member] | Expected credit losses collectively assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 3.50% | 3.50%
Performing [member] | Standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | $ 1,210,133
Percentage of maximum exposure to credit risk |  | 0.90%
Performing [member] | Standard grade [member] | Expected credit losses individually assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 3.51%
Performing [member] | Standard grade [member] | Expected credit losses individually assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 7.00%
Performing [member] | Standard grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 29,595,679 | $ 24,120,805
Percentage of maximum exposure to credit risk | 15.33% | 13.91%
Performing [member] | Standard grade [member] | Expected credit losses collectively assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 3.51% | 3.51%
Performing [member] | Standard grade [member] | Expected credit losses collectively assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 7.00% | 7.00%
Performing [member] | Sub-standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | $ 8,580,623
Percentage of maximum exposure to credit risk |  | 6.39%
Performing [member] | Sub-standard grade [member] | Expected credit losses individually assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 7.01%
Performing [member] | Sub-standard grade [member] | Expected credit losses individually assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 33.00%
Performing [member] | Sub-standard grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 17,340,691 | $ 24,714,275
Percentage of maximum exposure to credit risk | 8.98% | 14.25%
Performing [member] | Sub-standard grade [member] | Expected credit losses collectively assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 7.01% | 7.01%
Performing [member] | Sub-standard grade [member] | Expected credit losses collectively assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 33.00% | 33.00%
Past due but not impaired [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 7,224,625 | $ 8,720,906
Percentage of maximum exposure to credit risk | 2.70% | 2.84%
Past due but not impaired [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 33.01% | 33.01%
Past due but not impaired [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 99.99% | 99.99%
Past due but not impaired [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 1,987,576 | $ 1,389,063
Percentage of maximum exposure to credit risk | 2.68% | 1.04%
Past due but not impaired [member] | Expected credit losses individually assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 33.01%
Past due but not impaired [member] | Expected credit losses individually assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD |  | 99.99%
Past due but not impaired [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 5,237,049 | $ 7,331,843
Percentage of maximum exposure to credit risk | 2.71% | 4.23%
Past due but not impaired [member] | Expected credit losses collectively assessed [member] | Bottom of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 33.01% | 33.01%
Past due but not impaired [member] | Expected credit losses collectively assessed [member] | Top of range [member] |  |
Disclosure of credit risk exposure [line items] |  |
Range PD | 99.99% | 99.99%
Impairments stage 1 [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 248,789,910 | $ 280,564,677
Percentage of maximum exposure to credit risk | 93.06% | 91.20%
Impairments stage 1 [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 68,333,255 | $ 128,020,746
Percentage of maximum exposure to credit risk | 91.98% | 95.40%
Impairments stage 1 [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 180,456,655 | $ 152,543,931
Percentage of maximum exposure to credit risk | 93.47% | 87.95%
Impairments stage 1 [member] | High grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 64,283,220 |
Impairments stage 1 [member] | Standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 2,742,148 |
Impairments stage 1 [member] | Sub-standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 935,227 |
Impairments stage 1 [member] | Performing [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 247,998,859 | $ 280,074,262
Impairments stage 1 [member] | Performing [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 67,960,595 | 128,020,746
Impairments stage 1 [member] | Performing [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 180,038,264 | 152,053,516
Impairments stage 1 [member] | Performing [member] | High grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | 121,115,116
Impairments stage 1 [member] | Performing [member] | High grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 139,342,067 | 113,745,410
Impairments stage 1 [member] | Performing [member] | Standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | 25,878
Impairments stage 1 [member] | Performing [member] | Standard grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 29,124,880 | 23,159,929
Impairments stage 1 [member] | Performing [member] | Sub-standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | 6,879,752
Impairments stage 1 [member] | Performing [member] | Sub-standard grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 11,571,317 | 15,148,177
Impairments stage 1 [member] | Past due but not impaired [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 791,051 | 490,415
Impairments stage 1 [member] | Past due but not impaired [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 372,660 |
Impairments stage 1 [member] | Past due but not impaired [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 418,391 | 490,415
Impairments stage 2 [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 15,529,537 | $ 21,796,034
Percentage of maximum exposure to credit risk | 5.81% | 7.09%
Impairments stage 2 [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 4,396,524 | $ 4,284,909
Percentage of maximum exposure to credit risk | 5.92% | 3.19%
Impairments stage 2 [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 11,133,013 | $ 17,511,125
Percentage of maximum exposure to credit risk | 5.77% | 10.10%
Impairments stage 2 [member] | High grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 812 |
Impairments stage 2 [member] | Standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 1,454,671 |
Impairments stage 2 [member] | Sub-standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 1,326,125 |
Impairments stage 2 [member] | Performing [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 9,095,963 | $ 13,565,543
Impairments stage 2 [member] | Performing [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 2,781,608 | 2,895,846
Impairments stage 2 [member] | Performing [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 6,314,355 | 10,669,697
Impairments stage 2 [member] | Performing [member] | High grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | 10,720
Impairments stage 2 [member] | Performing [member] | High grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 74,182 | 142,723
Impairments stage 2 [member] | Performing [member] | Standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | 1,184,255
Impairments stage 2 [member] | Performing [member] | Standard grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 470,799 | 960,876
Impairments stage 2 [member] | Performing [member] | Sub-standard grade [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk |  | 1,700,871
Impairments stage 2 [member] | Performing [member] | Sub-standard grade [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 5,769,374 | 9,566,098
Impairments stage 2 [member] | Past due but not impaired [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 6,433,574 | 8,230,491
Impairments stage 2 [member] | Past due but not impaired [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 1,614,916 | 1,389,063
Impairments stage 2 [member] | Past due but not impaired [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | 4,818,658 | 6,841,428
Impairments Stage 3 [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 3,029,870 | $ 5,272,831
Percentage of maximum exposure to credit risk | 1.13% | 1.71%
Impairments Stage 3 [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 1,562,674 | $ 1,892,451
Percentage of maximum exposure to credit risk | 2.10% | 1.41%
Impairments Stage 3 [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 1,467,196 | $ 3,380,380
Percentage of maximum exposure to credit risk | 0.76% | 1.95%
Impairments Stage 3 [member] | Impaired [member] | Expected credit losses individually assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 1,562,674 | $ 1,892,451
Impairments Stage 3 [member] | Impaired [member] | Expected credit losses collectively assessed [member] |  |
Disclosure of credit risk exposure [line items] |  |
Maximum exposure to credit risk | $ 1,467,196 | $ 3,380,380
Commercial [member] |  |
Disclosure of credit risk exposure [line items] |  |
Percentage of credit quality of loans |  | 100.00%

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