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RISK MANAGEMENT - Investment debt securities - Concentration by sovereign risk - Tabular disclosure (Details) - COP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 27,718,721 | $ 24,161,398
Central Government debt instruments held, Percentage | 100.00% | 100.00%
Central Banks [Member] |  |
Disclosure of financial assets [line items] |  |
Central Bank debt instruments held, Percentage | 100.00% | 100.00%
Total Sovereign Risk | $ 27,864,210 | $ 24,355,496
Investment grade [member] |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 25,238,131 | $ 21,302,046
Central Government debt instruments held, Percentage | 91.05% | 88.16%
Investment grade [member] | Central Banks [Member] |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held, Percentage | 100.00% | 100.00%
Central Bank debt instruments held | $ 145,489 | $ 194,098
Investment grade [member] | Colombia |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 22,768,597 | $ 17,942,244
Central Government debt instruments held, Percentage | 82.14% | 74.26%
Investment grade [member] | Panama |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 1,077,656 | $ 1,126,942
Central Government debt instruments held, Percentage | 3.89% | 4.66%
Investment grade [member] | Panama | Central Banks [Member] |  |
Disclosure of financial assets [line items] |  |
Central Bank debt instruments held | $ 145,489 | $ 194,098
Central Bank debt instruments held, Percentage | 100.00% | 100.00%
Investment grade [member] | Mexico |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 16,268 | $ 19,552
Central Government debt instruments held, Percentage | 0.06% | 0.08%
Investment grade [member] | United States |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 1,371,842 | $ 2,213,308
Central Government debt instruments held, Percentage | 4.95% | 9.16%
Investment grade [member] | Chile |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 3,768 |
Central Government debt instruments held, Percentage | 0.01% |
Speculative grade [member] |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 2,480,590 | $ 2,859,352
Central Government debt instruments held, Percentage | 8.95% | 11.84%
Speculative grade [member] | Colombia |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 2,384,493 | $ 2,731,647
Central Government debt instruments held, Percentage | 8.60% | 11.31%
Speculative grade [member] | Brazil |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 27,643 | $ 32,834
Central Government debt instruments held, Percentage | 0.10% | 0.14%
Speculative grade [member] | Costa Rica |  |
Disclosure of financial assets [line items] |  |
Central Government debt instruments held | $ 68,454 | $ 94,871
Central Government debt instruments held, Percentage | 0.25% | 0.39%

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