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Exhibit 4. Quantitative information of concession services contracts (Details) - COP ($)
$ in Billions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Exhibit 4. Quantitative information of concession services contracts    
Asset concessions, intangible assets $ 8,008,595 $ 9,571,723
Asset concession, contractual asset 24,767,500 21,969,034
Asset concession, financial assets 10,525,998 10,692,402
Total concessions, asset 43,302,093 42,233,159
Revenue, intangible asset 2,261,318 2,260,024
Revenue, contractual asset 5,883,501 4,960,510
Revenue, financial asset 3,273,624 2,963,302
Total concessions, revenue 11,418,443 10,183,836
Peru    
Exhibit 4. Quantitative information of concession services contracts    
Asset concessions, intangible assets 7,968,352 9,522,629
Revenue, intangible asset 2,190,322 2,195,266
Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 108,243 192,583
Revenue, financial asset 917,329 1,026,847
Colombia    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 2,103,684 2,168,476
Revenue, financial asset 368,091 262,890
Chile    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 7,962,751 8,277,738
Revenue, financial asset 1,754,176 1,624,053
Panama    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 351,320 53,605
Revenue, financial asset 234,028 49,512
Electric power | Consorcio Transmantaro S.A. | Peru    
Exhibit 4. Quantitative information of concession services contracts    
Asset concessions, intangible assets 6,195,665 7,333,984
Revenue, intangible asset 1,215,407 1,252,084
Electric power | Red de Energia del Peru S.A. - ISA REP | Peru    
Exhibit 4. Quantitative information of concession services contracts    
Asset concessions, intangible assets 1,153,416 1,448,924
Revenue, intangible asset 836,528 811,312
Electric power | ISA Peru S.A. | Peru    
Exhibit 4. Quantitative information of concession services contracts    
Asset concessions, intangible assets 619,271 739,721
Revenue, intangible asset 138,387 131,870
Electric power | ISA Bolivia | Bolivia    
Exhibit 4. Quantitative information of concession services contracts    
Asset concessions, intangible assets 40,243 48,429
Revenue, intangible asset 33,741 30,981
Electric power | Inteia S. A. S. (antes Sistemas Inteligentes de Red S. A. S.) | Colombia    
Exhibit 4. Quantitative information of concession services contracts    
Asset concessions, intangible assets   665
Revenue, intangible asset 37,255 33,777
Electric power | ISA Energia Brasil S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 19,225,760 16,785,220
Asset concession, financial assets 65,094 143,786
Revenue, contractual asset 4,863,726 3,840,524
Revenue, financial asset 827,237 940,992
Electric power | Interligacao Eletrica Aguapei S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 546,798 551,546
Asset concession, financial assets 3,213 5,482
Revenue, contractual asset 61,838 70,757
Revenue, financial asset 13,035 12,099
Electric power | Interligacao Eletrica Itaquere S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 463,987 471,989
Asset concession, financial assets 2,987 3,918
Revenue, contractual asset 52,030 54,788
Revenue, financial asset 7,254 3,213
Electric power | Interligacao Eletrica Itaunas S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 447,335 451,017
Asset concession, financial assets 3,231 2,266
Revenue, contractual asset 56,716 70,667
Revenue, financial asset 4,751 4,784
Electric power | Interligacao Eletrica Biguacu S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 376,117 382,111
Asset concession, financial assets 2,395 3,547
Revenue, contractual asset 40,000 40,240
Revenue, financial asset 10,447 10,629
Electric power | Interligacao Eletrica Norte E Nordeste S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 373,371 385,827
Asset concession, financial assets 2,630 6,596
Revenue, contractual asset 47,797 51,461
Revenue, financial asset 1,351 3,093
Electric power | Interligacao Eletrica Jaguar 9 S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 418,108 414,858
Asset concession, financial assets 3,242 8,496
Revenue, contractual asset 57,994 84,657
Revenue, financial asset 6,837 12,549
Electric power | Interligacao Eletrica Serra do Japi S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 337,627 346,684
Asset concession, financial assets 5,257 3,310
Revenue, contractual asset 39,679 49,773
Revenue, financial asset 9,119 6,943
Electric power | Interligacao Eletrica de Minas Gerais S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 446,370 435,705
Asset concession, financial assets 3,701 3,531
Revenue, contractual asset 64,067 68,798
Revenue, financial asset 8,031 6,002
Electric power | Interligacao Eletrica Tibagi S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 271,197 230,114
Asset concession, financial assets 2,326 822
Revenue, contractual asset 71,706 50,635
Revenue, financial asset 3,411 6,434
Electric power | Interligacao Eletrica Jaguar 6 S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 154,014 166,781
Asset concession, financial assets 1,371 2,574
Revenue, contractual asset 12,240 20,804
Revenue, financial asset 3,770 3,189
Electric power | Interligacao Eletrica Evrecy S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 426,643 441,438
Asset concession, financial assets 3,238 3,695
Revenue, contractual asset 43,563 194,823
Revenue, financial asset 7,739 5,580
Electric power | Interligacao Eletrica Sul S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 172,208 178,033
Asset concession, financial assets 974 1,699
Revenue, contractual asset 18,439 25,249
Revenue, financial asset 2,035 2,661
Electric power | Interligacao Eletrica Itapura S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 151,059 154,087
Asset concession, financial assets 1,258 1,504
Revenue, contractual asset 15,156 30,845
Revenue, financial asset 6,458 6,197
Electric power | Interligacao Eletrica Jaguar 8 S.A | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 203,622 110,630
Asset concession, financial assets 1,041 1,103
Revenue, contractual asset 108,197 20,489
Revenue, financial asset 2,012 1,769
Electric power | Interligacao Eletrica Riacho Grande S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 707,650 416,559
Asset concession, financial assets 5,946  
Revenue, contractual asset 324,386 279,824
Revenue, financial asset 2,803  
Electric power | Interligacao Eletrica Pinheiros S.A. | Brazil    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, contractual asset 45,634 46,435
Asset concession, financial assets 339 254
Revenue, contractual asset 5,967 6,176
Revenue, financial asset 1,039 713
Roads | Ruta del Maipo Sociedad Concesionaria S.A. | Chile    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 6,312,424 6,412,889
Revenue, financial asset 1,218,232 877,003
Roads | Ruta del Loa Sociedad Concesionaria S.A. | Chile    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 1,543,347 1,537,355
Revenue, financial asset 190,050 323,645
Roads | Ruta de la Araucania Sociedad Concesionaria S.A. | Chile    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 14,957 224,489
Revenue, financial asset 154,513 191,956
Roads | Ruta de los Rios Sociedad Concesionaria S.A. | Chile    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 42,051 79,482
Revenue, financial asset 163,852 208,587
Roads | Ruta Orbital Sur Sociedad Concesionaria S.A. | Chile    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 48,810 23,523
Revenue, financial asset 27,314 22,862
Roads | Intervial Chile S.A. | Chile    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 1,162  
Revenue, financial asset 215  
Roads | Concesion Costera-Cartagena-Barranquilla S.A.S.-Ruta Costera | Colombia    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 2,103,684 2,168,476
Revenue, financial asset 368,091 262,890
Roads | Ruta del Este Sociedad Concessionaria S.A. | Panama    
Exhibit 4. Quantitative information of concession services contracts    
Asset concession, financial assets 351,320 53,605
Revenue, financial asset $ 234,028 $ 49,512