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EMPLOYEE BENEFITS - Sensitivity analysis (Details) - COP ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
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

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

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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

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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

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