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Other financial assets - Restrictions (Details) - COP ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Other financial assets
Restricted funds	$ 39,414	$ 68,069
Interligao Eltrica Norte e Nordeste
Other financial assets
Restricted funds	11,585	12,743
ISA
Other financial assets
Restricted funds	$ 12,780	$ 11,547

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- Definition

Line item represents the other financial assets.

+ References

No definition available.

+ Details

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

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- Definition

Amount of long-term restricted funds having an specific destination to investment projects.

+ References

No definition available.

+ Details

Name:	ec_LongTermRestrictedFundsHavingSpecificDestinationToInvestmentProjects
Namespace Prefix:	ec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

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

X

- Details

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