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EMPLOYEE BENEFIT PLANS - Economic assumptions used in the determination of the present value of the defined benefit plans (Details) - Y
Dec. 31, 2024
Dec. 31, 2023
Minimum    
EMPLOYEE BENEFIT PLANS    
Actuarial assumption of mortality rates (in years) 20  
Maximum    
EMPLOYEE BENEFIT PLANS    
Actuarial assumption of mortality rates (in years) 60  
Defined benefit pension plan - Colombia    
EMPLOYEE BENEFIT PLANS    
Discount rate 11.00% 11.75%
Rate of wage increase 7.90% 8.85%
Projected inflation 5.40% 6.35%
Rate of pension increase 5.40% 6.35%
Defined benefit pension plan - Bancolombia Panama    
EMPLOYEE BENEFIT PLANS    
Discount rate 6.50% 7.00%
Rate of wage increase 2.00% 2.00%
Projected inflation 2.00% 2.00%
Defined benefit pension plan - Banistmo    
EMPLOYEE BENEFIT PLANS    
Discount rate 7.00% 7.60%
Rate of wage increase 5.40% 2.20%
Defined benefit pension plan - El Salvador    
EMPLOYEE BENEFIT PLANS    
Discount rate 5.20% 6.20%
Rate of wage increase 2.50% 2.50%
Projected inflation 1.50% 1.50%
Defined benefit pension plan - Guatemala    
EMPLOYEE BENEFIT PLANS    
Discount rate 9.10% 9.00%
Rate of wage increase 5.00% 5.00%
Projected inflation 4.00% 4.00%