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Taxes - Reconciliation of the income tax expenses (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Taxes.      
Net income before income tax $ 30,707,415 $ 36,898,946 $ 54,163,418
Statutory tax rate 35.00% 35.00% 35.00%
Income tax at statutory rate $ 10,747,595 $ 12,914,631 $ 18,957,196
Effective tax rate reconciliation items:      
Adjustment - IAS 12.41 1,096,113 (2,032,193) 1,946,269
Non-deductible expenses 290,009 646,616 448,433
Rate differential adjustment (442,135) (1,630,935) (670,080)
Non-taxable income (1,204,985) (1,080,149) (739,243)
Prior years' taxes (21,806) 77,022 17,421
Foreign currency translation and exchange difference 124,753 577,949 (82,028)
Tax discounts and tax credit (11,309) (18,215) (184,054)
Others 244,662 119,154 (71,057)
Effect of recognition of shares of McDermott International, Ltd. (124,478)    
Effect of tax reform 1,510,121 1,941,995 (658,919)
Income tax expenses $ 12,208,540 $ 11,515,875 $ 18,963,938
Effective tax rate 39.80% 31.20% 35.00%
Current $ 8,954,180 $ 12,867,278 $ 16,801,363
Deferred 3,254,360 (1,351,403) 2,162,575
Income tax expenses $ 12,208,540 $ 11,515,875 $ 18,963,938