v3.26.1
FAIR VALUES - Fair value of financial instruments (Details) - Fair value - ARS ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets $ 408,103,914 $ 880,495,163
Financial liabilities 272,365,543 211,099,599
Derivatives    
Disclosure of fair value measurement of assets and liability [line items]    
Financial liabilities   2,281,117
Liabilities at fair value through profit or loss    
Disclosure of fair value measurement of assets and liability [line items]    
Financial liabilities 693,909  
Other financial liabilities    
Disclosure of fair value measurement of assets and liability [line items]    
Financial liabilities 271,671,634 208,818,482
Debt securities at fair value through profit or loss    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 249,506,501 346,410,248
Derivatives    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 9,910,637 6,087,827
Other financial assets    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 44,370,988 22,573,471
Other Debt Securities    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 98,609,845 273,817,769
Financial assets Pledged as collateral    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets   230,670,891
Investments in Equity Instruments    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 5,705,943 934,957
Level 1 of fair value hierarchy [member]    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 355,091,698 736,113,880
Financial liabilities 272,365,543 208,818,482
Level 1 of fair value hierarchy [member] | Liabilities at fair value through profit or loss    
Disclosure of fair value measurement of assets and liability [line items]    
Financial liabilities 693,909  
Level 1 of fair value hierarchy [member] | Other financial liabilities    
Disclosure of fair value measurement of assets and liability [line items]    
Financial liabilities 271,671,634 208,818,482
Level 1 of fair value hierarchy [member] | Debt securities at fair value through profit or loss    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 243,188,707 337,225,295
Level 1 of fair value hierarchy [member] | Other financial assets    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 44,370,988 22,573,471
Level 1 of fair value hierarchy [member] | Other Debt Securities    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 63,225,729 145,575,345
Level 1 of fair value hierarchy [member] | Financial assets Pledged as collateral    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets   230,670,891
Level 1 of fair value hierarchy [member] | Investments in Equity Instruments    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 4,306,274 68,878
Level 2 of fair value hierarchy [member]    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 51,612,547 143,515,204
Financial liabilities   2,281,117
Level 2 of fair value hierarchy [member] | Derivatives    
Disclosure of fair value measurement of assets and liability [line items]    
Financial liabilities   2,281,117
Level 2 of fair value hierarchy [member] | Debt securities at fair value through profit or loss    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 6,317,794 9,184,953
Level 2 of fair value hierarchy [member] | Derivatives    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 9,910,637 6,087,827
Level 2 of fair value hierarchy [member] | Other Debt Securities    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 35,384,116 128,242,424
Level 3 of fair value hierarchy [member]    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets 1,399,669 866,079
Level 3 of fair value hierarchy [member] | Investments in Equity Instruments    
Disclosure of fair value measurement of assets and liability [line items]    
Financial assets $ 1,399,669 $ 866,079