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CUSTOMER DEPOSITS - Effective interest rates (Details) | Dec. 31, 2023 | Dec. 31, 2022
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Colombia, Pesos | Bottom of range [member] | Interest-bearing checking accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 0.11% | 0.01%
Colombia, Pesos | Bottom of range [member] | Savings accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 0.01% | 0.01%
Colombia, Pesos | Bottom of range [member] | Fixed term deposit certificates [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 0.05% | 0.05%
Colombia, Pesos | Top of range [member] | Interest-bearing checking accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 13.40% | 13.20%
Colombia, Pesos | Top of range [member] | Savings accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 16.13% | 17.20%
Colombia, Pesos | Top of range [member] | Fixed term deposit certificates [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 23.52% | 19.54%
Foreign currency [member] | Bottom of range [member] | Interest-bearing checking accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 0.25% | 0.02%
Foreign currency [member] | Bottom of range [member] | Savings accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 0.25% | 0.01%
Foreign currency [member] | Bottom of range [member] | Fixed term deposit certificates [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 0.45% | 0.15%
Foreign currency [member] | Top of range [member] | Interest-bearing checking accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 5.30% | 4.40%
Foreign currency [member] | Top of range [member] | Savings accounts [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 5.30% | 4.00%
Foreign currency [member] | Top of range [member] | Fixed term deposit certificates [member] |  |
Disclosure of customer deposits [line items] |  |
Borrowings, interest rate | 8.46% | 8.05%

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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_7&doctype=Standard -URIDate 2023-03-23 + Details
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