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HEDGE ACCOUNTING - Fair value and interest expense (Details) - COP ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of detailed information about hedging instruments [line items]
Change in fair value	$ (1,372)	$ 79,980
Interest of the derivative designated as the hedging instrument	(49,794)	(63,333)	$ (1,242)
Banco de Bogota S.A.
Disclosure of detailed information about hedging instruments [line items]
Change in fair value	5,960	79,864
Interest of the derivative designated as the hedging instrument	(46,406)	(61,905)
Banco de Occidente S.A.
Disclosure of detailed information about hedging instruments [line items]
Change in fair value	(83)	116
Interest of the derivative designated as the hedging instrument	(1,183)	$ (1,428)
Interest income of the derivative designated as the hedging instrument	595
Banco Popular S.A.
Disclosure of detailed information about hedging instruments [line items]
Change in fair value	(7,332)
Interest of the derivative designated as the hedging instrument	$ (2,205)

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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.

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- Definition

The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 24A
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- Definition

The amount of interest expense on financial liabilities designated at fair value through profit or loss. [Refer: Interest expense; Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
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The amount of interest income on financial assets designated at fair value through profit or loss. [Refer: Interest income; Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently]

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