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ESTIMATION OF FAIR VALUE - Transfers between level 1, level 2 and level 3 of the fair value hierarchy (Details) - COP ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024
Disclosure of fair value measurement of assets [line items]
Transfers out of Level 3 of fair value hierarchy, assets	$ 0
Level two to one
Disclosure of fair value measurement of assets [line items]
Debt instruments held	0
Level one to two
Disclosure of fair value measurement of assets [line items]
Debt instruments held	$ 0
Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Level one to two
Disclosure of fair value measurement of assets [line items]
Debt instruments held		$ 99
Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] | Securities issued or secured by Colombian Government | Level one to two
Disclosure of fair value measurement of assets [line items]
Debt instruments held		99
Financial assets measured at fair value through other comprehensive income, category [member] | Level one to two
Disclosure of fair value measurement of assets [line items]
Debt instruments held		1,318,769
Financial assets measured at fair value through other comprehensive income, category [member] | Securities issued or secured by Colombian Government | Level one to two
Disclosure of fair value measurement of assets [line items]
Debt instruments held		$ 1,318,769

X

- Definition

The amount of instruments representing indebtedness, including instruments called debt securities, held by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

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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

No definition available.

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X

- Definition

The amount of transfers of assets out of Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph e
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_iv&doctype=Standard
-URIDate 2024-03-27

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