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GOODWILL - Cash-generating units - General information (Details) - COP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
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 | $ 12,257
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 | $ 9,666,524 |
Exceeds the book value of cash generating-unit | $ 6,618,375 |
Growth rate used to extrapolate cash flow projections | 3.10% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 8,958,407 |
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 | $ 12,391,866 |
Exceeds the book value of cash generating-unit | $ 6,039,628 |
Growth rate used to extrapolate cash flow projections | 6.50% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 11,213,891 |
Book value of cash-generating unit | $ 6,352,238 |
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 | $ 3,776,691 |
Exceeds the book value of cash generating-unit | $ 838,149 |
Growth rate used to extrapolate cash flow projections | 6.00% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 3,442,796 |
Book value of cash-generating unit | $ 2,938,542 |
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 | $ 14,060,477 |
Exceeds the book value of cash generating-unit | $ 5,054,718 |
Growth rate used to extrapolate cash flow projections | 6.00% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 12,865,943 |
Book value of cash-generating unit | 9,005,759 |
Multi Financial Group Inc [member] |  |
Disclosure of information for cash-generating units [line items] |  |
Recoverable amount of asset or cash-generating unit | 2,503,432 |
Exceeds the book value of cash generating-unit | $ 829,630 |
Growth rate used to extrapolate cash flow projections | 5.60% |
Increase decrease in discount rate applied to cash flow projections | 0.50% |
Recoverable value if discount rate was 0.5% higher | $ 2,273,792 |
Book value of cash-generating unit | $ 1,673,802 |

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- Definition The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph d -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_d_iv&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_e_iv&doctype=Standard -URIDate 2023-03-23 + Details
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