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Investment Portfolio - Government and Corporate Securities (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Of Detailed Information About Investment Portfolio Of Government And Corporate Securities [Abstract] |
Summary of Investments In Argentine And Other Governments And Corporate Securities |
|  | As of December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
|  | (in thousands of pesos) |
Government securities |  |  |  |  |  |  |  |  |  |  |  |
In pesos: |  |  |  |  |  |  |  |  |  |  |  |
Argentine Government bonds |  |  | 65,998,096 |  |  |  | 56,441,307 |  |  |  | 17,921,948 |
Argentine Treasury bills |  |  | 14,331,804 |  |  |  | 1,381,496 |  |  |  | — |
Other debt securities |  |  | — |  |  |  | — |  |  |  | 106,249 |
Liquidity Bills issued by the BCRA |  |  | 107,693,328 |  |  |  | 135,681,602 |  |  |  | 67,938,336 |
Total government securities in pesos |  |  | 188,023,228 |  |  |  | 193,504,405 |  |  |  | 85,966,533 |
In foreign currency: |  |  |  |  |  |  |  |  |  |  |  |
Argentine Government bonds |  |  | 1,618,363 |  |  |  | 107 |  |  |  | — |
Argentine Treasury bills |  |  | — |  |  |  | — |  |  |  | 15,092,617 |
Total government securities in foreign currency |  |  | 1,618,363 |  |  |  | 107 |  |  |  | 15,092,617 |
Total government securities |  |  | 189,641,591 |  |  |  | 193,504,512 |  |  |  | 101,059,150 |
Corporate securities |  |  |  |  |  |  |  |  |  |  |  |
Listed |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  |  | 36,083 |  |  |  | 43,018 |  |  |  | 56,242 |
Total corporate securities - listed |  |  | 36,083 |  |  |  | 43,018 |  |  |  | 56,242 |
Unlisted |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  |  | — |  |  |  | — |  |  |  | 6,526,952 |
Debt securities |  |  | 1,360,297 |  |  |  | 435,237 |  |  |  | 336,671 |
Total corporate securities - unlisted |  |  | 1,360,297 |  |  |  | 435,237 |  |  |  | 6,863,623 |
Investment funds |  |  |  |  |  |  |  |  |  |  |  |
Total investment funds |  |  | 1,905,039 |  |  |  | 2,221,661 |  |  |  | 2,006,796 |
Summary of Group Held Securities In Excess |
Issuer |  | Book value |  |  | Market value |
|  | (in thousands of pesos) |
BCRA |  |  | 107,693,328 |  |  |  | 107,693,328 |
Argentine Government |  |  | 81,948,263 |  |  |  | 81,948,263 |

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