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Exhibit 1. Consolidated companies, associates, and joint ventures - Subsidiaries & Joint ventures Interconexion Electrica S.A. ESP (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Consolidated companies, associates, and joint ventures        
Ownership Interest 49.00% 49.00%    
Equity $ 100,252,480 $ 113,903,089 $ 90,583,772 $ 53,499,363
Profit (loss) 25,383,071 35,199,480 $ 17,630,554  
Assets 280,141,090 302,792,431    
Liabilities $ 179,888,610 $ 188,889,342    
ATP Tower Holdings        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 24.70%      
Activity Transport and telecommunications      
Country/Domicile UnitedStates      
Geographic area of operations UnitedStates      
Equity $ 1,448,862      
Profit (loss) (95,648)      
Assets 3,981,180      
Liabilities $ 2,532,318      
Interligacao Eletrica do Madeira [Member]        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 51.00%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
% of Ecopetrol's ownership 51.00% 51.00%    
Equity $ 3,160,818 $ 3,438,987    
Profit (loss) 356,863 387,981    
Assets 5,739,716 6,580,545    
Liabilities $ 2,578,898 $ 3,141,558    
Interligao Eltrica Garanhuns        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 51.00%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 875,296      
Profit (loss) 101,875      
Assets 1,228,068      
Liabilities $ 352,772      
Interligao Eltrica Paraguau        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 50.00%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 884,355      
Profit (loss) 126,683      
Assets 1,331,261      
Liabilities $ 446,906      
Interligacao Eletrica Aimores        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 50.00%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 551,370      
Profit (loss) 84,280      
Assets 850,421      
Liabilities $ 299,051      
Interligacao Eletrica Ivai        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 50.00%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 798,810      
Profit (loss) 169,061      
Assets 3,603,858      
Liabilities $ 2,805,048      
Transmissora Alianca de Energia Eletrica        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 14.88%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
% of Ecopetrol's ownership 14.88% 14.88%    
Equity $ 5,273,100 $ 6,091,281    
Profit (loss) 1,121,332 1,252,974    
Assets 13,877,165 14,319,223    
Liabilities $ 8,604,065 $ 8,227,942    
Interconexion Electrica Colombia Panama-Panama        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 50.00%      
Activity Electric power      
Country/Domicile Panama      
Geographic area of operations Panama      
Equity $ 2,189      
Profit (loss) (31,805)      
Assets 5,572      
Liabilities $ 3,383      
Interconexion Electrica Colombia Panama Colombia        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombia peso      
Ownership Interest 1.17%      
Activity Electric power      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 265      
Profit (loss) (2)      
Assets 266      
Liabilities $ 1      
Transnexa        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 50.00%      
Activity Transport and telecommunications      
Country/Domicile Ecuador      
Geographic area of operations Ecuador      
Derivex        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombia peso      
Ownership Interest 40.46%      
Activity Manage the trading system for financial instruments derived from electricity      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 2,568      
Profit (loss) (851)      
Assets $ 2,568      
Parques de Rio [Member]        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombia peso      
Ownership Interest 33.00%      
Activity Roads      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 68      
Profit (loss) (34)      
Assets $ 68      
Conexin Kimal Lo Aguirre S.A. [Member]        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilena peso      
Ownership Interest 33.33%      
Activity Electric power      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 357,207      
Profit (loss) 873      
Assets 933,357      
Liabilities $ 576,150      
Consorcio Transmantaro        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 60.00%      
Activity Electric power      
Country/Domicile Peru      
Geographic area of operations Peru      
Equity $ 1,763,298      
Profit (loss) 264,947      
Assets 7,344,752      
Liabilities $ 5,581,454      
Interligacao Electrica Evrecy        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 301,117      
Profit (loss) (16,122)      
Assets 338,371      
Liabilities $ 37,254      
Fundo De Investimento Assis        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.81%      
Activity Autonomous Fund – Special Purpose Entity      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 297,081      
Profit (loss) 11,015      
Assets $ 297,081      
Fundo de Investimento Barra Bonita Renda Fixa Referenciado        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.73%      
Activity Autonomous Fund – Special Purpose Entity      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 14,829      
Profit (loss) 1,112      
Assets $ 14,829      
Fundo de Investimento Referenciado di Bandeirantes        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 27.68%      
Activity Autonomous Fund – Special Purpose Entity      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 290,651      
Profit (loss) 30,977      
Assets $ 290,651      
Fundo de Investimento Xavantes Referenciado di        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 17.54%      
Activity Autonomous Fund – Special Purpose Entity      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 609,614      
Profit (loss) 54,566      
Assets $ 609,614      
Interconexiones Viales        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 65.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 37      
Profit (loss) (4,145)      
Assets 39      
Liabilities $ 2      
Interligacao Eletrica Aguapei        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 506,224      
Profit (loss) 51,352      
Assets 556,177      
Liabilities $ 49,953      
Interligacao Eletrica Biguau        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 361,965      
Profit (loss) 59,638      
Assets 424,904      
Liabilities $ 62,939      
Interligacao Eletrica De Minas Gerais        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 416,128      
Profit (loss) 783      
Assets 452,785      
Liabilities $ 36,657      
Interligacao Eletrica Itapura        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 139,848      
Profit (loss) 18,699      
Assets 157,436      
Liabilities $ 17,588      
Interligacao Eletrica Itaquere        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 474,440      
Profit (loss) 60,763      
Assets 523,334      
Liabilities $ 48,894      
Interligacao Eletrica Itaunes        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 420,279      
Profit (loss) 25,801      
Assets 480,882      
Liabilities $ 60,603      
Interligacao Eletrica Norte E Nordeste        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 319,114      
Profit (loss) 57,351      
Assets 448,973      
Liabilities $ 129,859      
Interligacao Eletrica Pinheiros        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 53,982      
Profit (loss) 11,823      
Assets 62,153      
Liabilities $ 8,171      
Interligacao Eletrica Riacho Grande        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 126,250      
Profit (loss) 11,066      
Assets 158,806      
Liabilities $ 32,556      
Interligacao Eletrica Serra Do Japi        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 342,355      
Profit (loss) 46,124      
Assets 378,842      
Liabilities $ 36,487      
Interligacao Eletrica Sul        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 180,168      
Profit (loss) 7,516      
Assets 210,185      
Liabilities $ 30,017      
Interligacao Eletrica Tibagi        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 208,874      
Profit (loss) 26,181      
Assets 233,320      
Liabilities $ 24,446      
Internexa        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombian peso      
Ownership Interest 99.42%      
Activity Telecommunications and ICT      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 71,206      
Profit (loss) (143,493)      
Assets 543,656      
Liabilities $ 472,450      
Transamerican Telecomunication S.A.        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 99.42%      
Activity Telecommunications and ICT      
Country/Domicile Argentina      
Geographic area of operations Argentina      
Equity $ 5,909      
Profit (loss) (12,330)      
Assets 16,905      
Liabilities $ 10,996      
Internexa Brasil Operadora de Telecomunicacoes        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 99.42%      
Activity Telecommunications and ICT      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 789      
Profit (loss) (134,535)      
Assets 790      
Liabilities $ 1      
Internexa Chile        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 98.43%      
Activity Telecommunications and ICT      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 15,549      
Profit (loss) (13,073)      
Assets 56,509      
Liabilities $ 40,960      
Internexa Participaes        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 99.42%      
Activity Investment Vehicle      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 985      
Profit (loss) (91,887)      
Assets 1,051      
Liabilities $ 66      
Internexa Peru        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 99.42%      
Activity Telecommunications and ICT      
Country/Domicile Peru      
Geographic area of operations Peru      
Equity $ 44,450      
Profit (loss) (26,531)      
Assets 305,746      
Liabilities $ 261,296      
ISA Bolivia        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 100.00%      
Activity Electric power      
Country/Domicile Bolivia      
Geographic area of operations Bolivia      
Equity $ 110,562      
Profit (loss) 10,284      
Assets 121,428      
Liabilities $ 10,866      
ISA Capital Do Brasil        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 100.00%      
Activity Investment Vehicle      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 4,943,612      
Profit (loss) 841,993      
Assets 5,298,623      
Liabilities $ 355,011      
ISA CTEEP        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Activity Electric power      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 13,721,058      
Profit (loss) 2,461,680      
Assets 27,486,842      
Liabilities $ 13,765,784      
ISA Interchile        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 100.00%      
Activity Electric power      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 1,293,646      
Profit (loss) 121,276      
Assets 5,545,359      
Liabilities $ 4,251,713      
ISA Intercolombia        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Activity Electric power      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 133,111      
Profit (loss) 52,374      
Assets 455,003      
Liabilities $ 321,892      
ISA Intervial Chile        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 3,635,694      
Profit (loss) 533,512      
Assets 4,256,273      
Liabilities $ 620,579      
ISA Intervial Colombia        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 638      
Profit (loss) 51      
Assets $ 638      
ISA Inversiones Chile        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Investment Vehicle      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 1,672,354      
Profit (loss) 157,503      
Assets 1,924,873      
Liabilities $ 252,519      
ISA Inversiones Chile Vas SpA        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Investment Vehicle      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 3,638,171      
Profit (loss) 534,045      
Assets 3,638,805      
Liabilities $ 634      
ISA Inversiones Costera Chile        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Investment Vehicle      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ (114,051)      
Profit (loss) (71,698)      
Assets 70,173      
Liabilities $ 184,224      
ISA Inversiones Tolten        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Investment Vehicle      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 27      
Profit (loss) (5)      
Assets $ 27      
ISA Investimentos E Participacoes        
Consolidated companies, associates, and joint ventures        
Functional Currency Brazilian real      
Ownership Interest 100.00%      
Activity Investment Vehicle      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Equity $ 995,716      
Profit (loss) 140,918      
Assets 995,918      
Liabilities $ 202      
ISA Peru        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 99.98%      
Activity Electric power      
Country/Domicile Peru      
Geographic area of operations Peru      
Equity $ 191,119      
Profit (loss) 43,063      
Assets 898,335      
Liabilities $ 707,216      
ISA REP        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 60.00%      
Activity Electric power      
Country/Domicile Peru      
Geographic area of operations Peru      
Equity $ 546,059      
Profit (loss) 290,512      
Assets 1,859,619      
Liabilities $ 1,313,560      
ISA Transelca        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Activity Electric power      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 910,581      
Profit (loss) 199,452      
Assets 1,936,548      
Liabilities $ 1,025,967      
Linear Systems RE        
Consolidated companies, associates, and joint ventures        
Functional Currency US dollar      
Ownership Interest 100.00%      
Activity Other business      
Country/Domicile Bermudas      
Geographic area of operations Bermudas      
Equity $ 35,632      
Profit (loss) 7,232      
Assets 93,546      
Liabilities $ 57,914      
Proyectos De Infraestructura Del Peru        
Consolidated companies, associates, and joint ventures        
Functional Currency US Dollar      
Ownership Interest 100.00%      
Activity Electric power      
Country/Domicile Peru      
Geographic area of operations Peru      
Equity $ 19,019      
Profit (loss) 7,773      
Assets 21,204      
Liabilities $ 2,185      
Ruta Costera        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 173,012      
Profit (loss) (4,870)      
Assets 2,588,885      
Liabilities $ 2,415,873      
Ruta de La Araucania        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 323,871      
Profit (loss) 60,950      
Assets 681,824      
Liabilities $ 357,953      
Ruta de Los Rios        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 75.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 79,259      
Profit (loss) 35,696      
Assets 301,539      
Liabilities $ 222,280      
Ruta del Bosque        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 11,072      
Profit (loss) (28,950)      
Assets 12,595      
Liabilities $ 1,523      
Ruta del Loa        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 310,944      
Profit (loss) 70,097      
Assets 1,365,486      
Liabilities $ 1,054,542      
Ruta del Maipo        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 2,464,102      
Profit (loss) 465,092      
Assets 7,018,675      
Liabilities $ 4,554,573      
Ruta del Maule        
Consolidated companies, associates, and joint ventures        
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Activity Roads concessions      
Country/Domicile Chile      
Geographic area of operations Chile      
Equity $ 24      
Profit (loss) 2,264      
Assets 25      
Liabilities $ 1      
Sistemas Inteligentes en Red        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombia peso      
Ownership Interest 99.77%      
Activity Other business      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 13,743      
Profit (loss) 4,543      
Assets 25,252      
Liabilities $ 11,509      
XM        
Consolidated companies, associates, and joint ventures        
Functional Currency Colombian peso      
Ownership Interest 99.73%      
Activity Electric power      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Equity $ 57,987      
Profit (loss) 18,309      
Assets 445,241      
Liabilities $ 387,254