No definition available.

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

- Definition

The amount of interbank assets.

+ References

No definition available.

+ Details

Name:	cib_InterbankAssets
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of reserve that is kept in deposit at a central bank to fulfil regulatory reserve requirements.

+ References

No definition available.

+ Details

Name:	cib_MandatoryReservePercentageInCentralBank
Namespace Prefix:	cib_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of reserve that must be maintained on customer deposits.

+ References

No definition available.

+ Details

Name:	cib_MandatoryReservePercentageOfCustomerDeposits
Namespace Prefix:	cib_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of reserve that must be maintained on the deposits and debt securities in issue.

+ References

No definition available.

+ Details

Name:	cib_MandatoryReservePercentageOfDepositsAndDebtSecuritiesInIssue
Namespace Prefix:	cib_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of reserve that must be maintained on the deposits mentioned in Article 1, paragraph (a).

+ References

No definition available.

+ Details

Name:	cib_MandatoryReservePercentageOfDepositsArticleOneParagrapha
Namespace Prefix:	cib_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of money market transactions.

+ References

No definition available.

+ Details

Name:	cib_MoneyMarketTransactions
Namespace Prefix:	cib_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Adjustments for increase (decrease) in deposit liabilities to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Deposit liabilities; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_AdjustmentsForIncreaseDecreaseInDeposits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of bank balances held at central banks other than mandatory reserve deposits. [Refer: Mandatory reserve deposits at central banks]

+ References

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

+ Details

Name:	ifrs-full_BankBalancesAtCentralBanksOtherThanMandatoryReserveDeposits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

A classification of cash equivalents representing banking arrangements that the entity does not separately disclose in the same statement or note. [Refer: Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 45
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_BankingArrangementsClassifiedAsCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of cash on hand and demand deposits. [Refer: Cash on hand]

+ References

+ Details

Name:	ifrs-full_Cash
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 45
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph B13
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 54
-Subparagraph i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_i&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_CashAndCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of cash held by the entity. This does not include demand deposits.

+ References

+ Details

Name:	ifrs-full_CashOnHand
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of items that have been transmitted from other banks but not yet been received and processed by the entity.

+ References

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

+ Details

Name:	ifrs-full_ItemsInCourseOfCollectionFromOtherBanks
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of cash and cash equivalents that the entity does not separately disclose in the same statement or note. [Refer: Cash and cash equivalents]

+ References

+ Details

Name:	ifrs-full_OtherCashAndCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents]

+ References

+ Details

Name:	ifrs-full_RestrictedCashAndCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of instruments purchased for resale in reverse repurchase agreements and cash collateral on securities borrowed. [Refer: Repurchase agreements and cash collateral on securities lent]

+ References

+ Details

Name:	ifrs-full_ReverseRepurchaseAgreementsAndCashCollateralOnSecuritiesBorrowed
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	cib_IfrsCollateralHeldAxis=cib_MarginDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=cib_GrupoAgromercantilHoldingSaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ReservesWithinEquityAxis=cib_LegalBankingReserveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=cib_SubsidiariesAllPanamanianBanksMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ReservesWithinEquityAxis=cib_LiquidityReserveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=cib_BancoAgricolaSaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ReservesWithinEquityAxis=cib_LiquidityReserveTemporaryRuleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ReservesWithinEquityAxis=cib_LiquidityReserveTechnicalNormMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=ifrs-full_ParentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

CASH AND CASH EQUIVALENTS (Details) - COP ($) $ in Millions	1 Months Ended
CASH AND CASH EQUIVALENTS (Details) - COP ($) $ in Millions	Jan. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash and balances at central bank
Cash		$ 9,439,363	$ 8,830,305
Due from central banks		7,504,135	11,248,230
Due from other private financial entities		7,778,937	7,607,921
Checks on hold		132,929	214,004
Remittances of domestic negotiated checks in transit		26,172	74,524
Total cash and due from banks		24,881,536	27,974,984
Money market transactions
Interbank borrowings		2,239,615	3,983,699
Reverse repurchase agreements and other similar secured loans		5,722,948	7,840,926
Total money market transactions		7,962,563	11,824,625
Total cash and cash equivalents		32,844,099	39,799,609	$ 31,645,291	$ 25,329,846
Adjustments for increase (decrease) in deposits	$ 3,500,000
Margin deposits
Money market transactions
Restricted cash		$ 530,924	$ 1,082,611
Grupo Agromercantil Holding S.A. \| Legal banking reserve
Money market transactions
Mandatory reserve percentage in central bank		14.60%
All Panamanian banks \| Liquidity reserve \| Minimum
Money market transactions
Mandatory reserve percentage in central bank		30.00%
Banco Agricola S.A. \| Liquidity Reserve, Temporary Rule NPTB-09 \| Minimum
Money market transactions
Reserves to be maintained, percentage of deposits and debt securities in issue		1.00%
Banco Agricola S.A. \| Liquidity Reserve, Temporary Rule NPTB-09 \| Maximum
Money market transactions
Reserves to be maintained, percentage of deposits and debt securities in issue		16.00%
Banco Agricola S.A. \| Liquidity Reserve, Technical Norm (NRP-28) \| Minimum
Money market transactions
Reserves to be maintained, percentage of deposits and debt securities in issue		1.00%
Banco Agricola S.A. \| Liquidity Reserve, Technical Norm (NRP-28) \| Maximum
Money market transactions
Reserves to be maintained, percentage of deposits and debt securities in issue		18.00%
Bancolombia S.A.
Money market transactions
Reserves to be maintained, percentage of deposits mentioned in Article 1, paragraph (a)		7.00%	8.00%
Reserve to be maintained, percentage of customer deposits		2.50%	3.50%