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Financial Instruments Risks - Summary of Credit Quality Analysis of Loans and Advances (Detail) - ARS ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of internal credit grades [line items] |  |
Credit exposure | $ 1,903,342,526 | $ 1,892,223,634
Loans to consumers [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 580,160,521 | 599,534,953
Loans to corporate entities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 429,978,068 | 378,842,147
Debt securities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 661,802,743 | 369,337,385
Cash And Cash Equivalents [Member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 178,836,392 | 276,574,172
Reverse Repurchase Agreements |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 52,564,802 | 267,934,977
Reverse Repurchase Agreements | BCRA Repos [Member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 52,564,802 | 267,934,977
Low Risk [Member] | Loans to consumers [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 443,083,288 | 455,348,908
Low Risk [Member] | Loans to corporate entities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 375,070,574 | 284,644,882
Low Risk [Member] | Cash And Cash Equivalents [Member] | BCRA Unrestricted Current Account |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 178,836,392 | 276,574,172
Medium Risk [Member] | Loans to consumers [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 120,527,862 | 129,498,496
Medium Risk [Member] | Loans to corporate entities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 36,222,695 | 80,435,704
High Risk [Member] | Loans to consumers [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 5,964,266 | 2,674,827
High Risk [Member] | Loans to corporate entities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 16,622,010 | 6,958,284
Non Performing [Member] | Loans to consumers [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 10,585,105 | 12,012,722
Non Performing [Member] | Loans to corporate entities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 2,062,789 | 6,803,277
Corporate Bonds B [Member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 3,722,935 | 1,775,426
BCRA Liquidity Bills [Member] | Debt securities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 471,020,799 | 209,779,172
Government securities [member] | Debt securities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | 187,059,009 | 156,909,968
Corporate bonds [Member] | Debt securities [member] |  |
Disclosure of internal credit grades [line items] |  |
Credit exposure | $ 0 | $ 872,819

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