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ESTIMATION OF FAIR VALUE - Trading assets in debt securities pledged as collateral (Details) - Financial assets at fair value through profit or loss, classified as held for trading, category, International Financial Reporting Standards 9 [member] - COP ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | $ 6,452,275 | $ 2,853,286
Pledged in money market operations | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 5,272,055 | 2,774,296
Pledged in money market operations | Securities issued or secured by Colombian Government |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 5,270,000 | 2,702,953
Pledged in money market operations | Securities issued or secured by other financial entities |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 2,055 | 71,343
Pledged as collateral to special entities such as CRCC, BR and BVC | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,179,027 | 78,990
Pledged as collateral to special entities such as CRCC, BR and BVC | Securities issued or secured by Colombian Government |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,179,027 | 78,990
Pledged as collateral in operations with derivative instruments | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,193 |
Pledged as collateral in operations with derivative instruments | Securities issued or secured by Colombian Government |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,193 |
Level 1 of fair value hierarchy [member] | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 6,450,220 | 2,781,943
Level 1 of fair value hierarchy [member] | Pledged in money market operations | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 5,270,000 | 2,702,953
Level 1 of fair value hierarchy [member] | Pledged in money market operations | Securities issued or secured by Colombian Government |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 5,270,000 | 2,702,953
Level 1 of fair value hierarchy [member] | Pledged as collateral to special entities such as CRCC, BR and BVC | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,179,027 | 78,990
Level 1 of fair value hierarchy [member] | Pledged as collateral to special entities such as CRCC, BR and BVC | Securities issued or secured by Colombian Government |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,179,027 | 78,990
Level 1 of fair value hierarchy [member] | Pledged as collateral in operations with derivative instruments | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,193 |
Level 1 of fair value hierarchy [member] | Pledged as collateral in operations with derivative instruments | Securities issued or secured by Colombian Government |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 1,193 |
Level 2 of fair value hierarchy [member] | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 2,055 | 71,343
Level 2 of fair value hierarchy [member] | Pledged in money market operations | Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | 2,055 | 71,343
Level 2 of fair value hierarchy [member] | Pledged in money market operations | Securities issued or secured by other financial entities |  |
Disclosure of financial assets [line items] |  |
Financial assets pledged as collateral | $ 2,055 | $ 71,343

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- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 14 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_14_a&doctype=Standard -URIDate 2024-03-27 + Details
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