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Other Debt Securities - Summary of Other Debt Securities (Detail) - ARS ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Total Other debt securities measured at fair value through other comprehensive income | $ 261,934,556 | $ 268,683,871
Debt Securities of Financial Trust provisional Best Consumer Finance | 24,042,051 | 46,963,661
TOTAL OTHER DEBT SECURITIES | 285,976,607 | 315,647,532
Foreign Government securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 4,109,963 | 6,853,979
Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 124,853,842 | 67,604,659
Debt Securities of Financial Trust provisional Best Consumer Finance | 23,777,903 | 46,162,630
Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 132,970,751 | 194,225,233
Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 264,148 | 801,031
Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-12-2021 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 32,027,644
Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-21-2021 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 29,785,222
US Treasury Bill - Maturity: 01-14-2021 | Foreign Government securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 3,810,254
US Treasury Bill - Maturity: 01-19-2021 | Foreign Government securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 1,270,073
US Treasury Bill - Maturity: 01-21-2021 | Foreign Government securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 1,016,064
US Treasury Bill - Maturity: 01-28-2021 | Foreign Government securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 757,588
Bonds of treasury of federal government in pesos adjusted by CER - Maturity: 03-18-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance |  | 84,062
Federal government treasury letters at variable rate in pesos - Maturity: 03-31-2021 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance |  | 2,389,616
Other private securities [member] | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 3,601 | 650,122
Federal government treasury bonds adjusted by CER - Maturity: 04-17-2021 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance |  | 12,940,391
Bonds Par denominated in Pesos - Maturity 12-31-2038 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance |  | 42,643
Level 1 [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
TOTAL OTHER DEBT SECURITIES | 145,515,549 | 174,213,033
Level 1 [member] | Foreign Government securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 4,109,963 |
Level 1 [member] | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 22,742,357 | 277,187
Level 1 [member] | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 43,098 |
Level 1 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-25-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 16,551,744 |
Level 1 [member] | Debt securities of Province of Río Negro in pesos - Maturity: 04-12-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 218,580 |
Level 1 [member] | Federal government bonds in pesos at 22% - Maturity: 05-21-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance |  | 30,428,731
Level 1 [member] | Discount bonds denominated in pesos at 5.83% - Maturity: 12-31-2033 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 265,823 |
Level 2 [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
TOTAL OTHER DEBT SECURITIES | 116,419,007 | 94,470,838
Level 2 [member] | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 132,412,367
Level 2 [member] | Federal government treasury bonds linked to dollar - Maturity: 04-28-2023 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 29,321,529 |
Level 2 [member] | Federal government treasury bonds in pesos adjusted by CER - Maturity: 09-20-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 25,114,882 |
Level 2 [member] | Letters of National Estate in pesos adjusted by CER to discount - Maturity: 07-29-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 19,588,804 |
Level 2 [member] | Federal government treasury bonds in pesos BADLAR +200 PB - Maturity: 04-03-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 15,202,690 |
Level 2 [member] | Federal government treasury bonds in pesos adjusted by CER - Maturity: 03-25-2023 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 10,414,066 |
Level 2 [member] | Letters of National Estate in pesos adjusted by CER to discount - Maturity: 04-18-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 9,905,621 |
Level 2 [member] | Letters of National Estate in pesos adjusted by CER to discount - Maturity: 05-23-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 4,021,054 |
Level 2 [member] | Letters of National Estate in pesos to discount Maturity 01-31-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 3,794,807 |
Level 2 [member] | Federal government treasury bonds in pesos adjusted by CER - Maturity: 03-25-2024 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 3,357,516 |
Level 2 [member] | Federal government treasury bonds in pesos adjusted by CER - Maturity: 08-13-2023 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 3,096,000 |
Level 2 [member] | Other Government securities | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 1,036,873 |
Level 2 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-04-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 21,520,780 |
Level 2 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-27-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 18,879,645 |
Level 2 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-18-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 18,637,794 |
Level 2 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-11-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 17,725,328 |
Level 2 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-13-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 17,501,774 |
Level 2 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-06-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 15,888,779 |
Level 2 [member] | Liquidity letters of Central Bank of Argentina in pesos - Maturity: 01-20-2022 | Central Bank of Argentina Bills [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss | 6,264,907 |
Level 2 [member] | Treasury bills of Province of Neuquén Series 4 Class 1 - Maturity: 02-28-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 45,849 |
Level 2 [member] | Treasury bills of Province of Río Negro Series 2 Class 1 - Maturity: 06-15-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 193,577 |
Level 2 [member] | Treasury bills of Province of Neuquén Series 1 Class 1 - Maturity: 04-07-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 311,717 |
Level 2 [member] | Corporate Bonds YPF SA Class 043 - Maturity: 10-21-2023 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 55,706 | 112,103
Level 2 [member] | Corporate Bonds Santander Río Bank S.A. Class 021 - Maturity: 01-26-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 26,651 | 38,806
Level 3 [member] | Federal government treasury bonds in pesos BADLAR +200 PB - Maturity: 04-03-2022 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 49,728
Level 3 [member] | Federal government treasury bonds in pesos adjusted by CER - Maturity: 03-25-2023 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 1,568,690
Level 3 [member] | Federal government treasury bonds in pesos adjusted by CER - Maturity: 03-25-2024 | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | 1,321,885
Level 3 [member] | Other Government securities | Local Government Securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Other debt securities measured at fair value through profit and loss |  | $ 64,664,356
Level 3 [member] | Debt Securities in Financial Trusts Secubono Series 207 Class A - Maturity: 03-28-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 5,998 |
Level 3 [member] | Debt Securities in Financial Trusts Secubono Series 211 Class A - Maturity: 07-28-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 13,095 |
Level 3 [member] | Debt Securities in Financial Trusts Secubono Series 210 Class A - Maturity: 06-28-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 18,608 |
Level 3 [member] | Debt Securities in Financial Trusts Accicom Préstamos Pers Series 11 Class A- Maturity: 12-20-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 19,358 |
Level 3 [member] | Debt Securities in Financial Trusts Confibono Series 059 Class A - Maturity: 03-21-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 21,038 |
Level 3 [member] | Debt Securities in Financial Trusts Secubono Series 208 Class A - Maturity: 04-28-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | 26,117 |
Level 3 [member] | Debt Securities in Financial Trusts Secubono Series 209 Class A - Maturity: 05-30-2022 | Private securities [member] |  |
Disclosure of other debt securities at fair value through profit or loss [line items] |  |
Debt Securities of Financial Trust provisional Best Consumer Finance | $ 30,878 |

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