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Provisions - Summary of Changes in Provisions (Detail) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of other provisions [line items] |  |  |  |
Amounts at beginning of fiscal year |  | $ 1,978,115 | $ 3,027,969 |
Increases |  | 1,874,394 | 1,718,138 |
Decreases Reversals |  | 252 | 12 |
Decreases Charge Off |  | 1,543,737 | 1,916,553 |
Monetary effects |  | (654,963) | (851,427) |
Amounts at the end of fiscal year |  | 1,653,557 | 1,978,115 |
For administrative, disciplinary and criminal penalties [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Amounts at beginning of fiscal year |  | 1,084 | 1,476 |
Increases |  | 41,631 |  |
Decreases Reversals |  | 252 |  |
Decreases Charge Off |  | 41,576 |  |
Monetary effects |  | (387) | (392) |
Amounts at the end of fiscal year |  | 500 | 1,084 |
Letter of credit, guarantee and other commitments [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Amounts at beginning of fiscal year | [1] | 35,018 | 35,493 |
Increases |  | 376,539 | 24,555 | [1]
Decreases Charge Off |  | 1,271 | 13,016 | [1]
Monetary effects |  | (57,201) | (12,014) | [1]
Amounts at the end of fiscal year |  | 353,085 | 35,018 | [1]
Commercial claims in progress [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Amounts at beginning of fiscal year |  | 1,040,165 | 1,725,021 |
Increases |  | 372,302 | 303,157 |
Decreases Reversals |  |  | 12 |
Decreases Charge Off |  | 855,478 | 527,958 |
Monetary effects |  | (239,452) | (460,043) |
Amounts at the end of fiscal year |  | 317,537 | 1,040,165 |
Legal proceedings provision [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Amounts at beginning of fiscal year |  | 343,771 | 364,409 |
Increases |  | 266,424 | 162,028 |
Decreases Charge Off |  | 281,466 | 79,996 |
Monetary effects |  | (113,335) | (102,670) |
Amounts at the end of fiscal year |  | 215,394 | 343,771 |
Pension Funds - Reimbursement [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Amounts at beginning of fiscal year |  | 134,112 | 328,482 |
Increases |  | 41,362 | 23,541 |
Decreases Charge Off |  | 18,283 | 158,849 |
Monetary effects |  | (50,931) | (59,062) |
Amounts at the end of fiscal year |  | 106,260 | 134,112 |
Miscellaneous other provisions [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Amounts at beginning of fiscal year |  | 423,965 | 573,088 |
Increases |  | 776,136 | 1,204,857 |
Decreases Charge Off |  | 345,663 | 1,136,734 |
Monetary effects |  | (193,657) | (217,246) |
Amounts at the end of fiscal year |  | $ 660,781 | $ 423,965 |
[1] | These amounts correspond to the ECL calculated for contingent transactions, which are mentioned in note 4.

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