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HEDGE ACCOUNTING - Accumulated OCI (Details) - COP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about hedging instruments [line items] |  |  |
Balance at the beginning of the year | $ (544,219) |  |
Changes in the fair value bonds | 290,829 | $ 145,737 | $ (475,612)
Changes in the fair value other accounts receivable | 184,902 | (258,982) |
Balance at the end of the year | (243,983) | (544,219) |
Cash flow hedges [member] |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |
Balance at the beginning of the year | (30,381) | 5,542 | 7,938
Changes in the fair value FwD - Future transactions | 6,365 | (26,203) | 6,995
Changes in the fair value FwD - financial obligations | 43,724 | (32,672) |
Changes in the fair value Interest Rate Swaps (IRS) | 7,752 |  |
Changes in the fair value bonds | (184,902) | 270,064 |
Changes in the fair value other accounts receivable | 184,902 | (258,982) |
Reclassified to profit or loss | (2,760) | 11,870 | (9,391)
Balance at the end of the year | $ 24,700 | $ (30,381) | $ 5,542

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