Name:	ec_AmountsRecognisedAsOfAcquisitionDateForLiabilitiesassumedAbstract
Namespace Prefix:	ec_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount recognised as of the acquisition date for assets arising from exploration for and evaluation of mineral resources acquired in a business combination.

No definition available.

Name:	ec_AssetsArisingFromExplorationForAndEvaluationOfMineralResourcesRecognisedAsOfAcquisitionDate
Namespace Prefix:	ec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount recognised as of the acquisition date for total assets acquired in a business combination.

No definition available.

Name:	ec_AssetsRecognisedAsOfAcquisitionDate
Namespace Prefix:	ec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount recognised as of the acquisition date for total liabilities assumed in a business combination.

No definition available.

Name:	ec_LiabilitiesRecognisedAsOfAcquisitionDate
Namespace Prefix:	ec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount recognised as of the acquisition date for provision for employee benefits acquired in a business combination

No definition available.

Name:	ec_ProvisionForEmployeeBenefitsRecognisedAsOfAcquisitionDate
Namespace Prefix:	ec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount recognised as of the acquisition date for trade and other receivables acquired in a business combination.

No definition available.

Name:	ec_TradeAndOtherReceivablesRecognisedAsOfAcquisitionDate
Namespace Prefix:	ec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount recognised as of the acquisition date for cash and cash equivalents acquired in a business combination. [Refer: Cash and cash equivalents; Total for all business combinations [member]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B
-URIDate 2024-03-27

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

The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Total for all business combinations [member]]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph IE72
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_IE72&doctype=Illustrative%20Examples
-URIDate 2024-03-27

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

The amount recognised as of the acquisition date for inventory acquired in a business combination. [Refer: Inventories; Total for all business combinations [member]]

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

The amount recognised as of the acquisition date for plant, property and equipment acquired in a business combination. [Refer: Property, plant and equipment; Total for all business combinations [member]]

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

The amount recognised as of the acquisition date for trade and other payables assumed in a business combination. [Refer: Trade and other payables; Total for all business combinations [member]]