CASH AND CASH EQUIVALENTS - Tabular disclosure (Details) - COP ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|---|---|---|---|---|
| Disclosure of cash and cash equivalents [line items] | ||||
| Cash and cash equivalents | $ 19,354,710 | $ 16,998,859 | $ 18,597,861 | $ 17,032,857 |
| Colombia, Pesos | ||||
| Disclosure of cash and cash equivalents [line items] | ||||
| Cash | 3,660,126 | 3,653,565 | ||
| Deposits in the Colombian central bank | 4,705,916 | 4,162,015 | ||
| Demand deposits in banks and other financial entities | 250,950 | 201,906 | ||
| Clearing houses | 1,017 | 288 | ||
| Liquidity management | 2,228,070 | 1,599,125 | ||
| Cash held for specific purposes | 453,828 | 1,468,832 | ||
| Cash and cash equivalents | 11,299,907 | 11,085,731 | ||
| Foreign currency | ||||
| Disclosure of cash and cash equivalents [line items] | ||||
| Cash | 9,317 | 88,792 | ||
| Demand deposits in banks and other financial entities | 8,045,486 | 5,484,628 | ||
| Liquidity management | 339,708 | |||
| Cash and cash equivalents | $ 8,054,803 | $ 5,913,128 |