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RISK MANAGEMENT - Liquidity Risk - Undiscounted cash flows of commitment loans (Details) - Liquidity risk [member] - COP ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | $ 24,849,251 | $ 23,108,555
Financial guarantee contracts [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 2,422,146 | 3,552,304
Standby letters of credit |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 736,473 | 948,455
Overdraft facility [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 2,264,226 | 2,491,299
Standby credit card facility |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 12,449,298 | 11,861,422
Undrawn approved loans |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 4,220,322 | 3,231,548
Other Commitments |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 2,756,786 | 1,023,527
Not later than one month [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 23,290,847 | 20,988,794
Not later than one month [member] | Financial guarantee contracts [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 1,813,970 | 2,129,962
Not later than one month [member] | Standby letters of credit |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 606,747 | 947,723
Not later than one month [member] | Overdraft facility [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 2,264,226 | 2,491,299
Not later than one month [member] | Standby credit card facility |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 11,917,268 | 11,263,240
Not later than one month [member] | Undrawn approved loans |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 4,002,210 | 3,133,043
Not later than one month [member] | Other Commitments |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 2,686,426 | 1,023,527
Later than one month and not later than six months [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 570,291 | 368,139
Later than one month and not later than six months [member] | Financial guarantee contracts [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 80,012 | 142,987
Later than one month and not later than six months [member] | Standby letters of credit |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 89,801 | 714
Later than one month and not later than six months [member] | Standby credit card facility |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 112,006 | 125,933
Later than one month and not later than six months [member] | Undrawn approved loans |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 218,112 | 98,505
Later than one month and not later than six months [member] | Other Commitments |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 70,360 |
Later than six months and not later than one year [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 115,250 | 155,590
Later than six months and not later than one year [member] | Financial guarantee contracts [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 30,320 | 61,140
Later than six months and not later than one year [member] | Standby letters of credit |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 925 |
Later than six months and not later than one year [member] | Standby credit card facility |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 84,005 | 94,450
Later than one year [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 872,863 | 1,596,032
Later than one year [member] | Financial guarantee contracts [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 497,844 | 1,218,215
Later than one year [member] | Standby letters of credit |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | 39,000 | 18
Later than one year [member] | Standby credit card facility |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Commitments loans | $ 336,019 | $ 377,799

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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 amount of contractual undiscounted cash flows for gross commitments to receive a loan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph B11D -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_B11D_e&doctype=Appendix&subtype=B -URIDate 2023-03-23 + Details
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