INCOME TAX - Deferred taxes by type of temporary difference - Additional information (Details) - COP ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|---|---|---|---|---|
| Disclosure of income tax [line items] | ||||
| Deferred tax (liability) asset | $ (4,592,028) | $ (3,988,263) | $ (4,265,728) | $ (3,211,452) |
| Deferred tax liabilities [member] | ||||
| Disclosure of income tax [line items] | ||||
| Deferred tax (liability) asset | (12,158,074) | (11,515,991) | (10,908,549) | (10,880,671) |
| Deferred tax liabilities [member] | Property, plant and equipment [member] | ||||
| Disclosure of income tax [line items] | ||||
| Deferred tax (liability) asset | (782,801) | $ (268,208) | $ (226,618) | $ (234,385) |
| Deferred tax liabilities [member] | Property, plant and equipment [member] | Promigas S.A. and Subsidiaries | ||||
| Disclosure of income tax [line items] | ||||
| Deferred tax (liability) asset | $ 358,769 |