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EMPLOYEE BENEFITS - Sensitivity analysis (Details) - COP ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Actuarial assumption of discount rates [member] | Post-Employment benefits |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Decrease | $ 12,270 | $ 10,764
Increase | (11,583) | (10,227)
Actuarial assumption of discount rates [member] | Long-Term Benefits |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Decrease | 3,815 | 3,050
Increase | (3,642) | (2,919)
Actuarial assumption of expected rates of salary increases [member] | Post-Employment benefits |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Decrease | (2,568) | (1,756)
Increase | 2,693 | 2,353
Actuarial assumption of expected rates of salary increases [member] | Long-Term Benefits |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Decrease | (4,483) | (3,819)
Increase | 4,759 | 3,589
Actuarial assumption of expected rates of pension increases [member] | Post-Employment benefits |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Decrease | (11,323) | (10,443)
Increase | $ 11,923 | $ 10,979

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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard -URIDate 2024-03-27 + Details
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