FINANCIAL OBLIGATIONS - Interbank borrowings, overnight funds - Tabular disclosure (Details) - COP ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of detailed information about borrowings [line items] | ||
| Total interbank borrowings and overnight funds | $ 22,655,425 | $ 18,509,769 |
| Colombia, Pesos | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Overnight funds | 35,882 | 41,570 |
| Interbank funds purchased | 832,452 | 781,409 |
| Commitments to transfer open and closed repo operations | 8,354,523 | 9,898,971 |
| Commitments to transfer simultaneous operations | 10,819,356 | 5,648,747 |
| Commitments originated in short positions simultaneous operations | 2,401,845 | 1,093,006 |
| Temporary securities transfer operations | 32 | 2 |
| Total interbank funds | 22,444,090 | 17,463,705 |
| Foreign currency [member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Overnight funds | 2,746 | |
| Commitments to transfer open and closed repo operations | 208,589 | 1,046,064 |
| Total interbank funds | $ 211,335 | $ 1,046,064 |