Name:	cib_DebtInstrumentTerm1
Namespace Prefix:	cib_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	cib_InterbankDepositsAbstract
Namespace Prefix:	cib_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of interbank liabilities.

No definition available.

Name:	cib_InterbankLiabilities
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of instruments sold with the intent to reacquire in repurchase agreements.

No definition available.

Name:	cib_RepurchaseAgreements
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

Name:	cib_RepurchaseAgreementsAndOtherSimilarSecuredBorrowingAbstract
Namespace Prefix:	cib_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of short-selling operations.

No definition available.

Name:	cib_ShortSellingOperations
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of temporary transfer of securities.

No definition available.

Name:	cib_TemporaryTransferOfSecurities
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The total amount of money market transactions.

No definition available.

Name:	cib_TotalMoneyMarketTransactions
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of deposit liabilities from banks held by the entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_DepositsFromBanks
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of instruments sold with the intent to reacquire in repurchase agreements and cash collateral on securities lent.