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Loans and borrowings - Additional Information (Details) $ in Thousands, $ in Millions |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 21, 2024 USD ($) | Jan. 09, 2024 USD ($) | Dec. 31, 2024 COP ($) $ / $ | Dec. 31, 2023 COP ($) $ / $ | Dec. 31, 2022 COP ($) | Dec. 31, 2024 USD ($) $ / $ | Dec. 31, 2023 USD ($) $ / $
Loans and borrowings |  |  |  |  |  |  |
Borrowings |  |  | $ 119,965,031,000 | $ 105,815,527,000 |  |  |
Closing balance exchange rate |  |  | 4,409.15 | 3,822.05 |  | 4,409.15 | 3,822.05
Proceeds obtained from loans and borrowings |  |  | $ 27,155,189,000 |  |  |  |
Proceeds from borrowings |  |  | 27,155,189,000 | $ 34,035,090,000 | $ 16,844,029,000 |  |
Repayment of loans and borrowings |  |  | 26,157,908,000 | 21,659,669,000 | 16,409,494,000 |  |
Interest payments |  |  | 7,526,172,000 | 6,580,746,000 | $ 5,492,251,000 |  |
Fair value of loans and borrowings |  |  | 117,136,938,000 | 104,223,267,000 |  |  |
ISA and its Companies |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Estimated value of the current guarantees |  |  | 22,664,577,000 | 20,607,822,000 |  |  |
Chile | ISA and its Companies |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Estimated value of the current guarantees |  |  | 15,799,052,000 | 14,899,609,000 |  |  |
Brazil | ISA and its Companies |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Estimated value of the current guarantees |  |  | 4,186,525,000 | 3,029,213,000 |  |  |
Colombia | ISA and its Companies |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Estimated value of the current guarantees |  |  | 2,679,000,000 | 2,679,000,000 |  |  |
Hedge of a net investment in a foreign operation |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Hedging instrument liabilities |  |  |  |  |  | $ 10,269 | $ 10,270
Cash flow hedging |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Hedging instrument liabilities |  |  |  |  |  | 7,343 | 6,265
Local currency |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Borrowings |  |  | 11,370,942,000 | 10,417,990,000 |  |  |
Foreign currency |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Borrowings |  |  | 108,594,089,000 | $ 95,397,537,000 |  |  |
Local Borrowings With Grupo Aval |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Short-term financing |  |  | $ 1,000,000,000 |  |  |  |
Maturity period |  |  | 7 years |  |  |  |
Local Borrowings With Bancolombia |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Short-term financing |  |  | $ 1,000,000,000 |  |  |  |
External Public Debt Bonds |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Short-term financing | $ 1,750 | $ 1,850 |  |  |  |  |
Maturity period | 7 years 3 months 18 days | 12 years |  |  |  |  |
Borrowings, interest rate | 7.75% | 8.375% |  |  |  |  |
Committed credit line |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Short-term financing |  |  |  |  |  | 1,200 |
Maturity period |  |  | 5 years |  |  |  |
External Loan With Sumitomo Mitsui Banking Corporation |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Short-term financing |  |  |  |  |  | 250 |
Maturity period |  |  | 5 years |  |  |  |
Local Borrowings | Hedge of a net investment in a foreign operation |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Hedging instrument liabilities |  |  |  |  |  | $ 17,612 | $ 16,535
Commercial and syndicate loans | Local currency |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Borrowings, interest rate |  |  | 11.70% | 12.90% |  | 11.70% | 12.90%
Borrowings |  |  | $ 5,301,424,000 | $ 4,323,198,000 |  |  |
Commercial and syndicate loans | Foreign currency |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Borrowings, interest rate |  |  | 6.50% | 7.20% |  | 6.50% | 7.20%
Borrowings |  |  | $ 18,253,490,000 | $ 21,478,503,000 |  |  |
Bonds | Local currency |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Borrowings, interest rate |  |  | 9.80% | 12.40% |  | 9.80% | 12.40%
Borrowings |  |  | $ 5,193,284,000 | $ 5,172,256,000 |  |  |
Bonds | Foreign currency |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Borrowings, interest rate |  |  | 7.00% | 6.40% |  | 7.00% | 6.40%
Borrowings |  |  | $ 88,881,027,000 | $ 72,774,985,000 |  |  |
Ecopetrol S.A |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Proceeds obtained from loans and borrowings |  |  | 22,352,453,000 |  |  |  |
Repayment of loans and borrowings |  |  | 22,887,005,000 |  |  |  |
Interest payments |  |  | 5,361,447,000 |  |  |  |
Interconexion Electrica S.A. E.S.P |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Proceeds obtained from loans and borrowings |  |  | 4,410,500,000 |  |  |  |
Repayment of loans and borrowings |  |  | 2,476,782,000 |  |  |  |
Interest payments |  |  | 2,023,663,000 |  |  |  |
Ocensa S.A |  |  |  |  |  |  |
Loans and borrowings |  |  |  |  |  |  |
Repayment of loans and borrowings |  |  | $ 7,526,172,000 |  |  |  |

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