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GOODWILL - Cash-generating units - General information (Details) - COP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Disclosure of information for cash-generating units [line items] |  |
Explanation of period over which management has projected cash flows | Such calculations used cash flow projections, covering periods from 5 to 20 years. |
Impairment |  | $ 10,000
Bottom of range [member] |  |
Disclosure of information for cash-generating units [line items] |  |
Explanation of period over which management has projected cash flows, period | 5 years |
Top of range [member] |  |
Disclosure of information for cash-generating units [line items] |  |
Explanation of period over which management has projected cash flows, period | 20 years |
Sociedad Administradora de Fondos de Pensiones y Cesantias Porvenir S.A. |  |
Disclosure of information for cash-generating units [line items] |  |
Explanation of period over which management has projected cash flows | 13-years projection |
Explanation of period over which management has projected cash flows, period | 13 years |
Recoverable amount of asset or cash-generating unit | $ 14,635,179 |
Exceeds the book value of cash generating-unit | $ 11,587,030 |
Growth rate used to extrapolate cash flow projections | 3.00% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 13,436,597 |
Book value of cash-generating unit | $ 3,048,149 |
Banco de Bogota S.A. over Megabanco |  |
Disclosure of information for cash-generating units [line items] |  |
Explanation of period over which management has projected cash flows | 5-years projection |
Explanation of period over which management has projected cash flows, period | 5 years |
Recoverable amount of asset or cash-generating unit | $ 13,241,975 |
Exceeds the book value of cash generating-unit | $ 6,297,072 |
Growth rate used to extrapolate cash flow projections | 6.10% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 12,006,417 |
Book value of cash-generating unit | $ 6,944,903 |
Banco Popular S.A. |  |
Disclosure of information for cash-generating units [line items] |  |
Explanation of period over which management has projected cash flows | 5-years projection |
Explanation of period over which management has projected cash flows, period | 5 years |
Recoverable amount of asset or cash-generating unit | $ 4,131,229 |
Exceeds the book value of cash generating-unit | $ 1,487,724 |
Growth rate used to extrapolate cash flow projections | 6.10% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 3,505,844 |
Book value of cash-generating unit | $ 2,643,505 |
Banco de Bogota S.A. |  |
Disclosure of information for cash-generating units [line items] |  |
Explanation of period over which management has projected cash flows | 5-years projection |
Explanation of period over which management has projected cash flows, period | 5 years |
Recoverable amount of asset or cash-generating unit | $ 27,840,439 |
Exceeds the book value of cash generating-unit | $ 18,151,772 |
Growth rate used to extrapolate cash flow projections | 6.10% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 25,304,639 |
Book value of cash-generating unit | 9,688,667 |
Multi Financial Group Inc [member] |  |
Disclosure of information for cash-generating units [line items] |  |
Recoverable amount of asset or cash-generating unit | 2,590,461 |
Exceeds the book value of cash generating-unit | $ 542,784 |
Growth rate used to extrapolate cash flow projections | 5.50% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 2,351,717 |
Book value of cash-generating unit | $ 2,047,677 |

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