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Supplemental information on oil and gas producing activities (unaudited) - Capitalized costs relating to oil and gas exploration and production activities (Details) - COP ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental information on oil and gas producing activities (unaudited)
Natural and environmental properties	$ 109,005,280	$ 96,856,236	$ 90,284,366
Wells, equipment, and facilities - property, plant, and equipment	42,387,351	35,897,318	33,568,835
Exploration and production projects	19,488,784	17,372,792	16,451,284
Accumulated depreciation, depletion, and amortization	(96,990,855)	(84,413,729)	(79,744,788)
Net capitalized cost	$ 73,890,560	$ 65,712,617	$ 60,559,697

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- Definition

Amount of accumulated depreciation, depletion, amortization relating to oil and gas producing activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	ec_
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Balance Type:	credit
Period Type:	instant

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- Definition

The amount of construction in progress capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation, depletion and amortization.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of natural and environmental properties capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation, depletion and amortization.

+ References

No definition available.

+ Details

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

X

- Definition

Net amount of capitalized costs relating to oil and gas producing activities.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of wells, equipment and facilities capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation, depletion and amortization.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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