Supplemental information on oil and gas producing activities (unaudited) - Additional Information (Details) - COP ($) $ in Billions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Supplemental information on oil and gas producing activities (unaudited)
Provisions for asset retirement obligations included in cost capitalized to natural and environmental properties	$ 2,473	$ 1,498	$ 4,102
Expense related to the asset retirement obligations	570	636	478
Depreciation, depletion and amortization related to asset retirement obligations	$ 207	$ 704	$ 439
Percentage of transferred crude oil and gas production based on value to intercompany units	17.20%	16.90%	18.70%
Percentage of transferred crude oil and gas production based on volume to intercompany units	56.00%	55.50%	57.00%
Percentage of estimated reserve specialized firms	99.00%
Estimated costs related to assets retirement obligations	$ 26,287	$ 25,449	$ 22,615
Block CPO09
Supplemental information on oil and gas producing activities (unaudited)
Percentage of interest acquired		45.00%	49.00%

The amount of accretion expense related to asset retirement obligations is recognized during the reporting period.

No definition available.

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- Definition

The amount of depreciation, depletion and amortization related to asset retirement obligations is recognized during the reporting period.

+ References

No definition available.

+ Details

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- Definition

Its represents percentage of estimated reserve percentage of specialized firms.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of estimated future accumulated cash outflow for costs to be incurred in producing proved oil and gas reserves related to asset retirement obligations..

+ References

No definition available.

+ Details

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- Definition

Amount of natural and environmental properties, which includes, but is not limited to, natural and environmental properties from asset retirement obligations.

+ References

No definition available.

+ Details

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- Definition

It represents the percentage rate of crude oil and gas production based on value which transferred during the reporting period.

+ References

No definition available.

+ Details

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- Definition

It represents the percentage rate of crude oil and gas production based on volume which transferred during the reporting period.

+ References

No definition available.

+ Details

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- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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