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Represents the percentage of valuation sample.

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]

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The fair value of financial assets. [Refer: At fair value [member]; Financial assets]

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The amount of increase (decrease) in the fair value measurement of assets due to a reasonably possible decrease in an unobservable input.

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The amount of increase (decrease) in the fair value measurement of assets due to a reasonably possible increase in an unobservable input.

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ESTIMATION OF FAIR VALUE - Sensitivity analysis of main equity securities (Details) - COP ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Oct. 29, 2024
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Financial assets	$ 305,457,293	$ 304,853,883
Percentage of valuation sample	100.00%	100.00%
Banco Popular S.A.
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Percentage of participation in subsidiary	4.53%	4.49%
Banco de Bogota S.A.
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Percentage of participation in subsidiary	6.29%	6.24%
Banco de Occidente S.A.
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Percentage of participation in subsidiary	2.48%	2.46%
Banco AV Villas S A
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Percentage of participation in subsidiary	0.66%	0.65%
Financial assets at fair value through profit or loss, category [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Financial assets	$ 31,969,586	$ 24,400,493
Private equity fund Pactia Inmobiliario [member] \| Financial assets at fair value through profit or loss, category [member] \| Level 3 of fair value hierarchy [member] \| Funds managed by other entities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Financial assets	368,940	327,688	$ 324,220
Financial assets at fair value			$ 3,468
Sensitivity impacts, Scenario 1	145,958	3,816
Sensitivity impacts, Scenario 2	(130,982)	(6,294)
Equity securities \| Financial assets at fair value through profit or loss, category [member] \| Funds managed by other entities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Financial assets	4,086,202
Equity securities \| Private real estate equity fund Nexus \| Financial assets at fair value through profit or loss, category [member] \| Level 3 of fair value hierarchy [member] \| Funds managed by other entities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Financial assets	3,717,262	2,772,165
Sensitivity impacts, Scenario 1	47,056	65,955
Sensitivity impacts, Scenario 2	(76,273)	$ (97,147)
Investment property [member] \| Financial assets at fair value through profit or loss, category [member] \| Level 3 of fair value hierarchy [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Financial assets	179,161
Sensitivity impacts, Scenario 1	8,950
Sensitivity impacts, Scenario 2	$ (9,177)