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Fair Value Quantitative and Qualitative Disclosures - Summary of Comparison Between the Fair Value and the Carrying Amount of Financial Instruments (Detail) - ARS ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
FINANCIAL ASSETS |  |  |
Cash and deposits in banks | $ 172,332,578 | $ 196,175,043 | $ 206,890,307
Repo transactions | 31,405,801 | 59,503,764 |
Other financial assets | 33,069,312 | 27,593,415 |
Loans and other financing | 352,361,088 | 388,555,757 |
Other debt securities | 24,042,051 | 46,963,660 |
Financial assets delivered as guarantee | 17,964,257 | 20,522,947 |
Financial assets | 631,175,087 | 739,314,586 |
Financial liabilities |  |  |
Deposits | 588,850,704 | 737,714,203 |
Repo transactions |  | 933,682 |
Other financial liabilities | 67,935,119 | 74,287,265 |
Financing received from the BCRA and other financial entities | 437,726 | 1,387,310 |
Issued corporate bonds | 2,990,809 | 7,436,745 |
Subordinated corporate bonds | 41,974,169 | 51,773,419 |
Financial liabilities | 702,188,527 | 873,532,624 |
Level 1 [member] |  |  |
FINANCIAL ASSETS |  |  |
Cash and deposits in banks | 172,332,578 | 196,175,043 |
Repo transactions | 31,405,801 | 59,503,764 |
Other financial assets | 33,069,312 | 27,593,415 |
Other debt securities | 22,870,843 | 15,939,083 |
Financial assets delivered as guarantee | 17,964,257 | 20,522,947 |
Financial assets | 277,642,791 | 319,734,252 |
Financial liabilities |  |  |
Deposits | 333,710,730 | 366,882,887 |
Repo transactions |  | 933,682 |
Other financial liabilities | 66,489,254 | 72,269,553 |
Financing received from the BCRA and other financial entities | 396,210 | 488,858 |
Financial liabilities | 400,596,194 | 440,574,980 |
Level 2 [member] |  |  |
FINANCIAL ASSETS |  |  |
Other debt securities | 649,862 | 33,524,602 |
Financial assets | 649,862 | 33,524,602 |
Financial liabilities |  |  |
Other financial liabilities | 1,434,811 | 2,009,484 |
Financing received from the BCRA and other financial entities | 38,375 | 883,979 |
Issued corporate bonds | 2,632,631 | 6,220,000 |
Subordinated corporate bonds | 34,459,093 | 43,929,655 |
Financial liabilities | 38,564,910 | 53,043,118 |
Level 3 [member] |  |  |
FINANCIAL ASSETS |  |  |
Loans and other financing | 327,385,535 | 362,198,537 |
Other debt securities | 156,143 | 223,887 |
Financial assets | 327,541,678 | 362,422,424 |
Financial liabilities |  |  |
Deposits | 254,808,085 | 370,411,513 |
Financial liabilities | 254,808,085 | 370,411,513 |
At fair value [member] |  |  |
FINANCIAL ASSETS |  |  |
Cash and deposits in banks | 172,332,578 | 196,175,043 |
Repo transactions | 31,405,801 | 59,503,764 |
Other financial assets | 33,069,312 | 27,593,415 |
Loans and other financing | 327,385,535 | 362,198,537 |
Other debt securities | 23,676,848 | 49,687,572 |
Financial assets delivered as guarantee | 17,964,257 | 20,522,947 |
Financial assets | 605,834,331 | 715,681,278 |
Financial liabilities |  |  |
Deposits | 588,518,815 | 737,294,400 |
Repo transactions |  | 933,682 |
Other financial liabilities | 67,924,065 | 74,279,037 |
Financing received from the BCRA and other financial entities | 434,585 | 1,372,837 |
Issued corporate bonds | 2,632,631 | 6,220,000 |
Subordinated corporate bonds | 34,459,093 | 43,929,655 |
Financial liabilities | $ 693,969,189 | $ 864,029,611 |

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