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Other financial assets - Restrictions (Details) - COP ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Other financial assets
Restricted funds	$ 76,801	$ 68,069
Isa Interchile
Other financial assets
Restricted funds	$ 34,421	$ 26,666

X

- Definition

Line item represents the other financial assets.

+ References

No definition available.

+ Details

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

X

- 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

X

- Details

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