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Basis for Preparation of Financial Statements and Applicable Accounting Standards - Summary of Bank's Equity Interest and Voting Rights (Parenthetical) (Detail) - ARS ($) $ / shares in Units, $ in Thousands | Dec. 15, 2021 | Dec. 31, 2021 | May 12, 2021 | Dec. 31, 2019 | Dec. 31, 2018
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Basis for preparation of financial statements and applicable accounting standards [line items] |  |  |  |  |
Number of shares issued |  | 639,413,408 |  | 639,413,408 | 669,663,021
Argenpay SAU [Member] |  |  |  |  |
Basis for preparation of financial statements and applicable accounting standards [line items] |  |  |  |  |
Irrevocable capital contributions | $ 100,000 |  |  |  |
Number of shares issued | 100,000,000 |  |  |  |
Par value per share | $ 1 |  | $ 1 |  |

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