Name:	cib_DisclosureOfOperatingIncomeAndOperatingExpenseLineItems
Namespace Prefix:	cib_
Data Type:	xbrli:stringItemType
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Period Type:	duration

The gains (losses) from investment property valuation.

No definition available.

Name:	cib_GainsLossesOnInvestmentPropertyValuation
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Revenue from insurance services, including net premiums earned, gain on sale of insurance block, agency management fees and insurance contract fees and commissions.

No definition available.

Name:	cib_IfrsInsuranceServicesRevenue
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of income from operating leases, property leases and other assets leases.

No definition available.

Name:	cib_LeasesIncomeIncludingOperatingLeasesPropertyLeasesAndOtherAssetsLeases
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The gain on the disposal of property, plant and equipment. [Refer: Property, plant and equipment]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 98
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_c&doctype=Standard
-URIDate 2024-03-27

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Data Type:	xbrli:monetaryItemType
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The amount of income arising from fines and penalties.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_IncomeFromFinesAndPenalties
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of miscellaneous other operating income. [Refer: Other operating income (expense)]

Name:	ifrs-full_MiscellaneousOtherOperatingIncome
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of operating income (expense) that the entity does not separately disclose in the same statement or note.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_OtherOperatingIncomeExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of reversals of provisions that the entity does not separately disclose in the same statement or note. [Refer: Provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 98
-Subparagraph g
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_g&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_OtherReversalsOfProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The amount of revenue arising from the rendering of services. [Refer: Revenue]

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of trading income (expense) relating to foreign exchange contracts. [Refer: Trading income (expense)]

Name:	ifrs-full_TradingIncomeExpenseOnForeignExchangeContracts
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	ifrs-full_ProductsAndServicesAxis=cib_OperatingLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ProductsAndServicesAxis=cib_OtherRelatedLeasingServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ProductsAndServicesAxis=cib_PropertyLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: