v3.26.1
CUSTOMER DEPOSITS - Effective interest rates (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Colombia, Pesos | Bottom of range [member]    
Disclosure of customer deposits [line items]    
Customer deposits, effective interest rate, interest-bearing checking accounts (as a percent) 0.01% 0.17%
Customer deposits, effective interest rate, savings accounts (as a percent) 0.01% 0.01%
Customer deposits, effective interest rate, fixed term deposit certificates (as a percent) 0.05% 0.05%
Colombia, Pesos | Top of range [member]    
Disclosure of customer deposits [line items]    
Customer deposits, effective interest rate, interest-bearing checking accounts (as a percent) 9.00% 9.35%
Customer deposits, effective interest rate, savings accounts (as a percent) 13.89% 13.78%
Customer deposits, effective interest rate, fixed term deposit certificates (as a percent) 23.52% 23.52%
Foreign currency | Bottom of range [member]    
Disclosure of customer deposits [line items]    
Customer deposits, effective interest rate, interest-bearing checking accounts (as a percent) 0.03% 0.03%
Customer deposits, effective interest rate, savings accounts (as a percent) 0.05% 0.05%
Customer deposits, effective interest rate, fixed term deposit certificates (as a percent) 0.30% 0.30%
Foreign currency | Top of range [member]    
Disclosure of customer deposits [line items]    
Customer deposits, effective interest rate, interest-bearing checking accounts (as a percent) 4.08% 5.60%
Customer deposits, effective interest rate, savings accounts (as a percent) 3.62% 5.00%
Customer deposits, effective interest rate, fixed term deposit certificates (as a percent) 8.05% 9.00%