v3.25.1
Fair Values - Summary of Assets and Liabilities Recorded at Amortized Cost (Detail) - ARS ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets $ 35,304,482,204 $ 24,153,216,752  
Liabilities 28,721,128,962 19,383,966,954  
Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 3,414,462,015 1,645,140,313  
Liabilities 9,777,215 116,994,621  
Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 1,224,612,665 112,034,506  
Liabilities 8,329,699 28,935,340  
Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 95,097,094 16,965,707 $ 20,284,263
Liabilities 0 0  
Deposits      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Liabilities 20,231,127,931 13,494,564,030  
Deposits | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 20,232,584,596 13,496,170,607  
Deposits | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 0  
Deposits | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 3,378,348,713 0  
Deposits | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 16,854,235,883 13,496,170,607  
Repurchase Transactions      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Liabilities 423,095,210 55,196,186  
Repurchase Transactions | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 423,095,210 55,196,186  
Repurchase Transactions | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 423,095,210 0  
Repurchase Transactions | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 0  
Repurchase Transactions | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 55,196,186  
Financing Received from the Argentine Central Bank and Other Financial Institutions      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Liabilities 479,636,814 326,569,454  
Financing Received from the Argentine Central Bank and Other Financial Institutions | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 478,540,293 325,659,435  
Financing Received from the Argentine Central Bank and Other Financial Institutions | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 0  
Financing Received from the Argentine Central Bank and Other Financial Institutions | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 12,139 0  
Financing Received from the Argentine Central Bank and Other Financial Institutions | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 478,528,154 325,659,435  
Debt Securities      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Liabilities 1,096,011,970 219,201,761  
Debt Securities | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 1,092,249,540 215,538,838  
Debt Securities | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 1,090,236,004 179,008,238  
Debt Securities | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 0  
Debt Securities | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 2,013,536 36,530,600  
Subordinated Debt Securities      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Liabilities 288,917,745 486,118,312  
Subordinated Debt Securities | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 286,129,831 475,413,769  
Subordinated Debt Securities | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 0  
Subordinated Debt Securities | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 0  
Subordinated Debt Securities | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 286,129,831 475,413,769  
Other Financial Liabilities      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Liabilities 3,868,112,993 3,010,456,587  
Other Financial Liabilities | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 3,847,044,492 3,009,333,602  
Other Financial Liabilities | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 0 0  
Other Financial Liabilities | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 318,124,338 0  
Other Financial Liabilities | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Liabilities at Fair Value 3,528,920,154 3,009,333,602  
Cash and Due from Banks      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 7,322,813,233 4,718,751,562  
Cash and Due from Banks | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 7,322,813,233 4,718,751,562  
Cash and Due from Banks | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 7,322,813,233 4,718,751,562  
Cash and Due from Banks | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 0 0  
Cash and Due from Banks | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 0 0  
Repurchase Transactions      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets   2,766,551,954  
Repurchase Transactions | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value   2,766,551,954  
Repurchase Transactions | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value   2,766,551,954  
Repurchase Transactions | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value   0  
Repurchase Transactions | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value   0  
Loans and Other Financing      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 15,594,049,791 7,283,530,406  
Loans and Other Financing | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 15,676,206,090 7,293,368,970  
Loans and Other Financing | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 0 0  
Loans and Other Financing | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 0 0  
Loans and Other Financing | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 15,676,206,090 7,293,368,970  
Other Financial Assets      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 1,523,168,636 304,520,556  
Other Financial Assets | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 341,279,478 116,508,094  
Other Financial Assets | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 47,144 50,928  
Other Financial Assets | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 20,677,139 0  
Other Financial Assets | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 1,542,936,332 322,871,166  
Other Financial Assets | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 1,489,565,745 240,360,719  
Other Financial Assets | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 0 0  
Other Financial Assets | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 53,370,587 82,510,447  
Other Debt Securities      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 2,367,129,719 4,503,892,247  
Other Debt Securities | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 1,512,345,135 25,159,309  
Other Debt Securities | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 982,634,164 25,265,966  
Other Debt Securities | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 2,553,142 0  
Other Debt Securities | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 2,187,070,553 4,504,905,282  
Other Debt Securities | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 742,471,831 3,807,401,576  
Other Debt Securities | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 0 62,754,861  
Other Debt Securities | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 1,444,598,722 634,748,845  
Financial Assets Pledged as Collateral      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 1,452,094,178 935,063,901  
Financial Assets Pledged as Collateral | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 34,531,438 85,241,078  
Financial Assets Pledged as Collateral | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 124,991,769 0  
Financial Assets Pledged as Collateral | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Assets 0 0  
Financial Assets Pledged as Collateral | Fair Value      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 1,401,203,968 935,200,065  
Financial Assets Pledged as Collateral | Fair Value | Fair Value Level 1      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 1,401,203,968 935,200,065  
Financial Assets Pledged as Collateral | Fair Value | Fair Value Level 2      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value 0 0  
Financial Assets Pledged as Collateral | Fair Value | Fair Value Level 3      
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]      
Financial Assets at Fair Value $ 0 $ 0