NET INCOME FROM CONTRACTS WITH CUSTOMERS - Income and expenses (Details) - COP ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Income from contract with customers [abstract] | |||
| Banking service fees | $ 1,733,348 | $ 1,614,067 | $ 1,545,111 |
| Pension and severance fund management | 1,282,053 | 1,174,608 | 978,504 |
| Credit card fees | 935,349 | 962,774 | 987,129 |
| Trust activities and portfolio management services | 569,710 | 495,929 | 463,194 |
| Bonded warehouse services | 203,814 | 181,804 | 188,191 |
| Office network services | 20,228 | 16,289 | 21,638 |
| Commissions on transfers, checks and checkbooks | 17,652 | 20,122 | 22,941 |
| Other commissions | 22,071 | 12,011 | 9,056 |
| Total income from commissions and fees | 4,784,225 | 4,477,604 | 4,215,764 |
| Banking services | (626,545) | (586,332) | (588,109) |
| Commissions for sales and services | (369,614) | (294,145) | (250,460) |
| Fees paid to pension funds sales force | (73,338) | (66,431) | (70,335) |
| Information processing services of operators | (36,028) | (33,079) | (29,905) |
| Offices network services | (6,108) | (9,796) | (20,147) |
| Other | (12,547) | (11,842) | (15,294) |
| Total expenses from commissions and fees | (1,124,180) | (1,001,625) | (974,250) |
| Net income from commissions and fees | $ 3,660,045 | $ 3,475,979 | $ 3,241,514 |