RISK MANAGEMENT - Structural foreign exchange risk - Sensitivity analysis of foreign exchange effect (Details) - COP ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of risk management [abstract] | ||
| Equity, increase Ps.100 per U.S. dollar | $ 1,591 | $ 1,801 |
| Equity, decrease Ps.100 per U.S. dollar | (1,591) | (1,801) |
| Profit and loss before taxes, increase Ps.100 per U.S. dollar | (71,717) | (53,818) |
| Profit and loss before taxes, decrease Ps.100 per U.S. dollar | $ 71,717 | $ 53,818 |