v3.25.1
ADDITIONAL INFORMATION REQUIRED BY THE ARGENTINE CENTRAL BANK - Additional Information (Detail) - ARS ($)
 3 Months Ended 12 Months Ended
May 30, 2025
Apr. 30, 2024
Apr. 01, 2024
Dec. 31, 2022
Dec. 17, 2020
Nov. 17, 2020
Jun. 19, 2020
Jul. 29, 2019
Mar. 31, 2025
Dec. 31, 2024
Disclosure of additional information [line items]                    
Percentage of monthly contribution to deposit insurance fund                 0.015%  
Instruments held in custody                 $ 51,362,189,200,000 $ 47,523,085,445,000
Ordinary And Extraordinary Shareholders' Meeting                    
Disclosure of additional information [line items]                    
Dividend   $ 65,000,000,000                
UIF Proceedings - Docket 867/13 | Banco Galicia And Eight Directors                    
Disclosure of additional information [line items]                    
Penalties applied             $ 440,000      
CNV Summary Proceeding No. 87/2024                    
Disclosure of additional information [line items]                    
Legal reserve                 $ 28,837,892,000  
CNV Summary Proceeding No. 87/2024 | 6 Regular Directors And 3 Regular Syndics Of The Bank, 3 Regular Directors And 3 Regular Syndics Of Galicia Securities S.A.U., And 5 Regular Directors And 3 Regular Syndics Of INVIU S.A.U.                    
Disclosure of additional information [line items]                    
Liquidity option exercise, NV amount   113,000,000                
Complementary notes exercise, apparent excess amount   $ 23,072,000,000                
Summary No.1426                    
Disclosure of additional information [line items]                    
Losses on litigation settlements               $ 945,000,000    
Summary UIF Expt. No.174/15                    
Disclosure of additional information [line items]                    
Losses on litigation settlements           $ 550,000        
Summary CNV No.631/2014                    
Disclosure of additional information [line items]                    
Losses on litigation settlements         $ 500,000          
Electrigal SA                    
Disclosure of additional information [line items]                    
Equity investments, shares                 1,222,406  
Escrow Agent                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 $ 1,326,200,000  
Minimum required shareholders offsetting entry                 663,100,000  
Alync And AN Integral                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 656,609,000  
Minimum required shareholders offsetting entry                 328,305,000  
Treasury bills                 2,239,278,000  
Treasury bills, fair value                 1,944,000,000  
Banco GGAL S.A.                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 $ 656,609,000  
Required shareholders equity shares (in shares)                 470,350  
Net worth                 $ 1,553,362,689,000  
Securities held in custody in units                 125,619,458,158 104,969,157,902
Instruments held in custody                 $ 1,453,390,344,000 $ 1,500,173,078,000
Banco GGAL S.A. | Pesos And Other Currencies                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 143,979,000  
Banco GGAL S.A. | Assets In Local Instruments                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 184,325,000  
Galicia administradora de fondos S.A.                    
Disclosure of additional information [line items]                    
Minimum required shareholders offsetting entry                 774,780,000  
Minimum equity requirement act as agent                 1,549,560,000  
Galicia administradora de fondos S.A. | Fima Premium Class C Shares                    
Disclosure of additional information [line items]                    
Minimum required shareholders offsetting entry                 $ 814,323,000  
Minimum offsetting entry shares                 17,000,000  
GGAL Asset Management S.A. S.G.F.C.I.                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 $ 11,724,029,000  
Minimum equity requirement act as agent                 684,040,000  
Minimum required equity act as agent off setting entry                 342,020,000  
GGAL Asset Management S.A. S.G.F.C.I. | HF Pesos Plus Class I                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 $ 1,295,808,000  
Required shareholders equity shares (in shares)                 16,093,583  
GGAL Asset Management S.A. S.G.F.C.I. | HF Pesos Class I                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 $ 10,428,220,000  
Required shareholders equity shares (in shares)                 44,970,688  
Galicia Securities S.A.U.                    
Disclosure of additional information [line items]                    
Required shareholders equity amount                 $ 656,609,000  
Minimum required shareholders offsetting entry                 $ 328,305,000  
Required shareholders equity shares (in shares)                 470,350  
Galicia Securities S.A.U. | Placement and Distribution Agents of Mutual Funds                    
Disclosure of additional information [line items]                    
Required shareholders equity shares (in shares)                 163,500  
Minimum equity requirement act as agent                 $ 228,246,000  
Minimum required equity act as agent off setting entry                 $ 114,123,000  
INVIU S.A.U.                    
Disclosure of additional information [line items]                    
Required shareholders equity shares (in shares)                 470,350  
Banco de Galicia y Buenos Aires S.A.U.                    
Disclosure of additional information [line items]                    
Securities held in custody in units                 113,574,991,513 113,964,085,065
Instruments held in custody                 $ 8,532,604,454,000 $ 7,981,096,231,000
Grupo Financiero Galicia S.A.                    
Disclosure of additional information [line items]                    
Percentage of net income transferred                 5.00%  
Legal reserve                 20.00%  
Banco Galicia                    
Disclosure of additional information [line items]                    
Legal reserve                 20.00%  
Percentage of profit shown in income statement                 20.00%  
Argentine Central Bank                    
Disclosure of additional information [line items]                    
Minimum capital requirement                 3.50%  
Percentage of accumulated income                 60.00%  
Tarjeta Naranja S.A.U.                    
Disclosure of additional information [line items]                    
Dividend rate                 25.00%  
Minimum capital requirement       $ 122,320,811,000         $ 300,000,000  
Net insurance contracts                    
Disclosure of additional information [line items]                    
Insurance system to demand deposits and time deposits limits     $ 25,000,000              
Major Dividends                    
Disclosure of additional information [line items]                    
Dividend $ 300,000,000,000