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RISK MANAGEMENT - Mitigation of credit risk, collateral and other (Details) - COP ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of financial assets [line items] |  |
Credit exposure | $ 269,560,244 | $ 263,369,003
Loan portfolio [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 186,203,770 | 188,313,361
Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 18,486,206 | 17,883,355
Less than 50% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 7,784,742 | 6,828,495
51 - 70% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 6,379,677 | 6,139,066
71 - 90% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 3,281,508 | 3,595,794
91 - 100% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 771,664 | 1,019,031
More than 100% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 268,615 | 300,969
Financial instruments credit-impaired [member] | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 604,424 | 497,132
Financial instruments credit-impaired [member] | Less than 50% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 146,489 | 141,621
Financial instruments credit-impaired [member] | 51 - 70% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | 252,655 | 184,151
Financial instruments credit-impaired [member] | More than 70% | Mortgage [member] | Financial assets at amortised cost, category [member] |  |
Disclosure of financial assets [line items] |  |
Credit exposure | $ 205,280 | $ 171,360

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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. + Details
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- Definition The maximum exposure to the credit risk of financial assets designated as measured at fair value through profit or loss. [Refer: Credit risk [member]; Maximum exposure to credit risk] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 9 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_9_a&doctype=Standard -URIDate 2023-03-23 + Details
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