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CUSTOMER DEPOSITS - Deposits - Tabular disclosure (Details) - COP ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of customer deposits [line items] |  |
Checking accounts | $ 23,809,859 | $ 25,932,053
Savings accounts | 71,149,883 | 74,293,894
Other funds on demand | 430,194 | 841,505
Total demand deposits | 95,389,936 | 101,067,452
Balances on term deposits from customers | 86,597,460 | 72,273,697
Total deposits from customers | 181,987,396 | 173,341,149
Colombia, Pesos |  |
Disclosure of customer deposits [line items] |  |
Total deposits from customers | 154,916,985 | 142,071,530
Foreign currency [member] |  |
Disclosure of customer deposits [line items] |  |
Total deposits from customers | $ 27,070,411 | $ 31,269,619

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