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Supplemental information on oil and gas producing activities (unaudited) - Discounted net cash flows (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Supplemental information on oil and gas producing activities (unaudited)      
Net change in sales and transfer prices and in production cost (lifting) related to future production $ (123,240,049) $ 158,798,134 $ 110,224,660
Changes in estimated future development costs (10,624,343) (52,166,780) (22,011,659)
Sales and transfer of oil and gas produced net of production costs (60,970,234) (68,867,970) (50,694,613)
Net change due to extensions, discoveries, and improved recovery 6,173,144 9,993,781 6,741,068
Net change due to purchase and sales of minerals in place 0 1,767,856 (13,419)
Net change due to revisions in quantity estimates 967,150 10,807,453 32,923,680
Previously estimated development costs incurred during the period 34,815,000 69,458,458 32,941,335
Accretion of discount 28,676,517 15,360,418 10,468,951
Timing and other (13,215,214) (11,990,359) (16,636,925)
Net change in income taxes 77,093,694 (84,908,732) (36,016,420)
Aggregate change in the standardized measure of discounted future net cash flows for the year $ (60,324,335) $ 48,252,259 $ 67,926,658