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HEDGE ACCOUNTING - Accumulated OCI (Details) - COP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of detailed information about hedging instruments [line items] |  |  |
Balance at the beginning of the year | $ (1,146,565) |  |
Changes in the fair value bonds | 145,737 | $ (475,612) | $ (129,773)
Changes in the fair value other accounts receivable | (258,982) |  |
Balance at the end of the year | (544,219) | (1,146,565) |
Cash flow hedges |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |
Balance at the beginning of the year | 5,542 | 7,938 | (42)
Changes in the fair value FwD - Future transactions | (26,203) | 6,995 | (8,879)
Changes in the fair value FwD - financial obligations | (32,672) |  |
Changes in the fair value bonds | 270,064 |  |
Changes in the fair value other accounts receivable | (258,982) |  |
Changes in the fair value of the hedge forward contracts | (26,203) | 6,995 | (8,879)
Reclassified to profit or loss | 11,870 | (9,391) | 16,859
Balance at the end of the year | $ (30,381) | $ 5,542 | $ 7,938

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