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Capital Management, Corporate Governance Transparency Policy and Risk Management - Summary of Contractual Future Cash Flows of Financial Liabilities, Including Interest and Charges to be Accrued (Detail) - ARS ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure Of Liquidity Risk [line items] |  |
Deposits | $ 593,699,585 | $ 745,035,445
From the non financial government sector | 56,753,459 | 112,204,541
From the financial sector | 961,192 | 1,051,180
From the non financial private sector and foreign residents | 535,984,934 | 631,779,724
Liabilities as fair value through profit or loss | 1,627,732 |
Derivative instruments | 2,532 | 347
Repo transactions |  | 936,425
Other financial institutions |  | 936,425
Other Financial Liabilities | 67,939,945 | 74,311,688
Financing received from the Central Bank of Argentina and other financial institutions | 445,821 | 1,433,200
Issued corporate bonds | 3,141,995 | 8,702,141
Subordinated corporate bonds | 54,709,348 | 73,089,079
Total | 721,566,958 | 903,508,325
Not later than one month [member] |  |
Disclosure Of Liquidity Risk [line items] |  |
Deposits | 534,412,537 | 663,992,149
From the non financial government sector | 53,454,556 | 102,449,069
From the financial sector | 961,192 | 1,051,180
From the non financial private sector and foreign residents | 479,996,789 | 560,491,900
Liabilities as fair value through profit or loss | 1,627,732 |
Derivative instruments |  | 63
Repo transactions |  | 936,425
Other financial institutions |  | 936,425
Other Financial Liabilities | 66,471,643 | 72,265,432
Financing received from the Central Bank of Argentina and other financial institutions | 235,308 | 633,111
Issued corporate bonds |  | 315,990
Total | 602,747,220 | 738,143,170
Not later than three months [member] |  |
Disclosure Of Liquidity Risk [line items] |  |
Deposits | 52,250,559 | 67,995,710
From the non financial government sector | 2,113,040 | 8,390,806
From the non financial private sector and foreign residents | 50,137,519 | 59,604,904
Derivative instruments |  | 284
Other Financial Liabilities | 176,593 | 201,770
Financing received from the Central Bank of Argentina and other financial institutions | 182,952 | 301,085
Total | 52,610,104 | 68,498,849
Later than three months and not later than six months [member] |  |
Disclosure Of Liquidity Risk [line items] |  |
Deposits | 6,441,859 | 8,425,133
From the non financial government sector | 1,183,257 | 1,361,454
From the non financial private sector and foreign residents | 5,258,602 | 7,063,679
Derivative instruments | 2,532 |
Other Financial Liabilities | 158,167 | 189,951
Financing received from the Central Bank of Argentina and other financial institutions | 13,519 | 308,033
Issued corporate bonds | 3,141,995 | 4,169,156
Subordinated corporate bonds | 1,364,088 | 1,714,632
Total | 11,122,160 | 14,806,905
Later than six months and not later than one year [member] |  |
Disclosure Of Liquidity Risk [line items] |  |
Deposits | 550,099 | 4,566,614
From the non financial government sector | 2,606 | 3,212
From the non financial private sector and foreign residents | 547,493 | 4,563,402
Other Financial Liabilities | 258,006 | 478,785
Financing received from the Central Bank of Argentina and other financial institutions | 8,318 | 121,814
Issued corporate bonds |  | 314,031
Subordinated corporate bonds | 1,364,089 | 1,714,634
Total | 2,180,512 | 7,195,878
Over 12 months and up to 24 months [member] |  |
Disclosure Of Liquidity Risk [line items] |  |
Deposits | 43,267 | 52,538
From the non financial private sector and foreign residents | 43,267 | 52,538
Other Financial Liabilities | 377,884 | 399,376
Financing received from the Central Bank of Argentina and other financial institutions | 5,724 | 60,517
Issued corporate bonds |  | 3,902,964
Subordinated corporate bonds | 2,728,178 | 3,771,176
Total | 3,155,053 | 8,186,571
Later than two years [member] |  |
Disclosure Of Liquidity Risk [line items] |  |
Deposits | 1,264 | 3,301
From the non financial private sector and foreign residents | 1,264 | 3,301
Other Financial Liabilities | 497,652 | 776,374
Financing received from the Central Bank of Argentina and other financial institutions |  | 8,640
Subordinated corporate bonds | 49,252,993 | 65,888,637
Total | $ 49,751,909 | $ 66,676,952

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