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Exhibit 1 - Consolidated subsidiaries, associates, and 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
Disclosure of subsidiaries [line items]        
Ownership Interest 49.00% 49.00%    
Total assets $ 280,141,090 $ 302,792,431    
Total liabilities 179,888,610 188,889,342    
Equity 100,252,480 113,903,089 $ 90,583,772 $ 53,499,363
Net profit $ 25,383,071 $ 35,199,480 $ 17,630,554  
Consorcio Transmantaro        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency US Dollar      
Ownership Interest 60.00%      
Country/Domicile Peru      
Geographic area of operations Peru      
Total assets $ 7,344,752      
Total liabilities 5,581,454      
Equity 1,763,298      
Net profit $ 264,947      
Interligacao Eletrica JAGUAR 6 S.A.        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 190,819      
Total liabilities 12,840      
Equity 177,979      
Net profit $ 9,872      
Interligacao Eletrica JAGUAR 8 S.A.        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 117,533      
Total liabilities 13,176      
Equity 104,357      
Net profit $ 9,713      
Interligacao Eletrica JAGUAR 9 S.A.        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 417,572      
Total liabilities 49,551      
Equity 368,021      
Net profit $ 72,511      
Interligacao Electrica Evrecy        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 338,371      
Total liabilities 37,254      
Equity 301,117      
Net profit $ (16,122)      
Fundo De Investimento Assis        
Disclosure of subsidiaries [line items]        
Activity Autonomous Fund – Special Purpose Entity      
Functional Currency Brazilian real      
Ownership Interest 35.81%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 297,081      
Equity 297,081      
Net profit $ 11,015      
Fundo de Investimento Barra Bonita Renda Fixa Referenciado        
Disclosure of subsidiaries [line items]        
Activity Autonomous Fund – Special Purpose Entity      
Functional Currency Brazilian real      
Ownership Interest 35.73%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 14,829      
Equity 14,829      
Net profit $ 1,112      
Fundo de Investimento Referenciado di Bandeirantes        
Disclosure of subsidiaries [line items]        
Activity Autonomous Fund – Special Purpose Entity      
Functional Currency Brazilian real      
Ownership Interest 27.68%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 290,651      
Equity 290,651      
Net profit $ 30,977      
Fundo de Investimento Xavantes Referenciado di        
Disclosure of subsidiaries [line items]        
Activity Autonomous Fund – Special Purpose Entity      
Functional Currency Brazilian real      
Ownership Interest 17.54%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 609,614      
Equity 609,614      
Net profit $ 54,566      
Interconexiones Viales        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 65.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 39      
Total liabilities 2      
Equity 37      
Net profit $ (4,145)      
Interligacao Eletrica Aguapei        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 556,177      
Total liabilities 49,953      
Equity 506,224      
Net profit $ 51,352      
Interligacao Eletrica Biguau        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 424,904      
Total liabilities 62,939      
Equity 361,965      
Net profit $ 59,638      
Interligacao Eletrica De Minas Gerais        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 452,785      
Total liabilities 36,657      
Equity 416,128      
Net profit $ 783      
Interligacao Eletrica Itapura        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 157,436      
Total liabilities 17,588      
Equity 139,848      
Net profit $ 18,699      
Interligacao Eletrica Itaquere        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 523,334      
Total liabilities 48,894      
Equity 474,440      
Net profit $ 60,763      
Interligacao Eletrica Itaunes        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 480,882      
Total liabilities 60,603      
Equity 420,279      
Net profit $ 25,801      
Interligacao Eletrica Norte E Nordeste        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 448,973      
Total liabilities 129,859      
Equity 319,114      
Net profit $ 57,351      
Interligacao Eletrica Pinheiros        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 62,153      
Total liabilities 8,171      
Equity 53,982      
Net profit $ 11,823      
Interligacao Eletrica Riacho Grande        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 158,806      
Total liabilities 32,556      
Equity 126,250      
Net profit $ 11,066      
Interligacao Eletrica Serra Do Japi        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 378,842      
Total liabilities 36,487      
Equity 342,355      
Net profit $ 46,124      
Interligacao Eletrica Sul        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 210,185      
Total liabilities 30,017      
Equity 180,168      
Net profit $ 7,516      
Interligacao Eletrica Tibagi        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 233,320      
Total liabilities 24,446      
Equity 208,874      
Net profit $ 26,181      
Internexa        
Disclosure of subsidiaries [line items]        
Activity Telecommunications and ICT      
Functional Currency Colombian peso      
Ownership Interest 99.42%      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Total assets $ 543,656      
Total liabilities 472,450      
Equity 71,206      
Net profit $ (143,493)      
Transamerican Telecomunication S.A.        
Disclosure of subsidiaries [line items]        
Activity Telecommunications and ICT      
Functional Currency US Dollar      
Ownership Interest 99.42%      
Country/Domicile Argentina      
Geographic area of operations Argentina      
Total assets $ 16,905      
Total liabilities 10,996      
Equity 5,909      
Net profit $ (12,330)      
Internexa Brasil Operadora de Telecomunicacoes        
Disclosure of subsidiaries [line items]        
Activity Telecommunications and ICT      
Functional Currency Brazilian real      
Ownership Interest 99.42%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 790      
Total liabilities 1      
Equity 789      
Net profit $ (134,535)      
Internexa Chile        
Disclosure of subsidiaries [line items]        
Activity Telecommunications and ICT      
Functional Currency Chilean peso      
Ownership Interest 98.43%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 56,509      
Total liabilities 40,960      
Equity 15,549      
Net profit $ (13,073)      
Internexa Participaes        
Disclosure of subsidiaries [line items]        
Activity Investment Vehicle      
Functional Currency Brazilian real      
Ownership Interest 99.42%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 1,051      
Total liabilities 66      
Equity 985      
Net profit $ (91,887)      
Internexa Peru        
Disclosure of subsidiaries [line items]        
Activity Telecommunications and ICT      
Functional Currency US Dollar      
Ownership Interest 99.42%      
Country/Domicile Peru      
Geographic area of operations Peru      
Total assets $ 305,746      
Total liabilities 261,296      
Equity 44,450      
Net profit $ (26,531)      
ISA Bolivia        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency US Dollar      
Ownership Interest 100.00%      
Country/Domicile Bolivia      
Geographic area of operations Bolivia      
Total assets $ 121,428      
Total liabilities 10,866      
Equity 110,562      
Net profit $ 10,284      
ISA Capital Do Brasil        
Disclosure of subsidiaries [line items]        
Activity Investment Vehicle      
Functional Currency Brazilian real      
Ownership Interest 100.00%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 5,298,623      
Total liabilities 355,011      
Equity 4,943,612      
Net profit $ 841,993      
ISA CTEEP        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Brazilian real      
Ownership Interest 35.82%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 27,486,842      
Total liabilities 13,765,784      
Equity 13,721,058      
Net profit $ 2,461,680      
ISA Interchile        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency US Dollar      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 5,545,359      
Total liabilities 4,251,713      
Equity 1,293,646      
Net profit $ 121,276      
ISA Intercolombia        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Total assets $ 455,003      
Total liabilities 321,892      
Equity 133,111      
Net profit $ 52,374      
ISA Intervial Chile        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 4,256,273      
Total liabilities 620,579      
Equity 3,635,694      
Net profit $ 533,512      
ISA Intervial Colombia        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Total assets $ 638      
Equity 638      
Net profit $ 51      
ISA Inversiones Chile        
Disclosure of subsidiaries [line items]        
Activity Investment Vehicle      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 1,924,873      
Total liabilities 252,519      
Equity 1,672,354      
Net profit $ 157,503      
ISA Inversiones Costera Chile        
Disclosure of subsidiaries [line items]        
Activity Investment Vehicle      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 70,173      
Total liabilities 184,224      
Equity (114,051)      
Net profit $ (71,698)      
ISA Inversiones Tolten        
Disclosure of subsidiaries [line items]        
Activity Investment Vehicle      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 27      
Equity 27      
Net profit $ (5)      
ISA Investimentos E Participacoes        
Disclosure of subsidiaries [line items]        
Activity Investment Vehicle      
Functional Currency Brazilian real      
Ownership Interest 100.00%      
Country/Domicile Brazil      
Geographic area of operations Brazil      
Total assets $ 995,918      
Total liabilities 202      
Equity 995,716      
Net profit $ 140,918      
ISA Peru        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency US Dollar      
Ownership Interest 99.98%      
Country/Domicile Peru      
Geographic area of operations Peru      
Total assets $ 898,335      
Total liabilities 707,216      
Equity 191,119      
Net profit $ 43,063      
ISA REP        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency US Dollar      
Ownership Interest 60.00%      
Country/Domicile Peru      
Geographic area of operations Peru      
Total assets $ 1,859,619      
Total liabilities 1,313,560      
Equity 546,059      
Net profit $ 290,512      
ISA Transelca        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Total assets $ 1,936,548      
Total liabilities 1,025,967      
Equity 910,581      
Net profit $ 199,452      
Linear Systems RE        
Disclosure of subsidiaries [line items]        
Activity Other business      
Functional Currency US dollar      
Ownership Interest 100.00%      
Country/Domicile Bermudas      
Geographic area of operations Bermudas      
Total assets $ 93,546      
Total liabilities 57,914      
Equity 35,632      
Net profit $ 7,232      
Proyectos De Infraestructura Del Peru        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency US Dollar      
Ownership Interest 100.00%      
Country/Domicile Peru      
Geographic area of operations Peru      
Total assets $ 21,204      
Total liabilities 2,185      
Equity 19,019      
Net profit $ 7,773      
Ruta Costera        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Colombian peso      
Ownership Interest 100.00%      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Total assets $ 2,588,885      
Total liabilities 2,415,873      
Equity 173,012      
Net profit $ (4,870)      
Ruta de La Araucania        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 681,824      
Total liabilities 357,953      
Equity 323,871      
Net profit $ 60,950      
Ruta de Los Rios        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 75.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 301,539      
Total liabilities 222,280      
Equity 79,259      
Net profit $ 35,696      
Ruta del Bosque        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 12,595      
Total liabilities 1,523      
Equity 11,072      
Net profit $ (28,950)      
Ruta del Loa        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 1,365,486      
Total liabilities 1,054,542      
Equity 310,944      
Net profit $ 70,097      
Ruta del Maipo        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 7,018,675      
Total liabilities 4,554,573      
Equity 2,464,102      
Net profit $ 465,092      
Ruta del Maule        
Disclosure of subsidiaries [line items]        
Activity Roads concessions      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 25      
Total liabilities 1      
Equity 24      
Net profit $ 2,264      
Sistemas Inteligentes en Red        
Disclosure of subsidiaries [line items]        
Activity Other business      
Functional Currency Colombia peso      
Ownership Interest 99.77%      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Total assets $ 25,252      
Total liabilities 11,509      
Equity 13,743      
Net profit $ 4,543      
XM        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Colombian peso      
Ownership Interest 99.73%      
Country/Domicile Colombia      
Geographic area of operations Colombia      
Total assets $ 445,241      
Total liabilities 387,254      
Equity 57,987      
Net profit $ 18,309      
Interconexiones del Norte S.A.        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency Chilean peso      
Ownership Interest 100.00%      
Country/Domicile Chile      
Geographic area of operations Chile      
Total assets $ 30,123      
Total liabilities 29,971      
Equity 152      
Net profit $ 167      
Consorcio Electrico Yapay S.A        
Disclosure of subsidiaries [line items]        
Activity Electric power      
Functional Currency US Dollar      
Ownership Interest 60.00%      
Country/Domicile Perú      
Geographic area of operations Perú      
Total assets $ 19,110      
Total liabilities 5,499      
Equity 13,611      
Net profit $ (6,221)