COMMITMENTS AND CONTINGENCIES - Contingencies (Details) - COP ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of contingent liabilities [line items] | ||
| Estimated financial effect of contingent liabilities | $ 696,024 | $ 915,155 |
| Labor proceedings | ||
| Disclosure of contingent liabilities [line items] | ||
| Estimated financial effect of contingent liabilities | 161,337 | 136,692 |
| Civil proceedings | ||
| Disclosure of contingent liabilities [line items] | ||
| Estimated financial effect of contingent liabilities | 253,108 | 316,314 |
| Administrative, tax proceedings and other proceedings | ||
| Disclosure of contingent liabilities [line items] | ||
| Estimated financial effect of contingent liabilities | $ 281,579 | $ 462,149 |