v3.26.1
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES - Financial information of associates (Details) - COP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of associates [line items]        
Assets $ 348,936,677 $ 327,859,383    
Liabilities 314,193,836 294,696,465    
Equity 34,742,841 33,162,918 $ 31,520,416 $ 30,821,659
Income 44,541,146 44,896,936 46,064,364  
Expenses 41,352,620 42,731,123 43,950,256  
Net income for the year 3,215,172 2,191,477 $ 2,177,116  
Gas Natural de Lima y Callao S.A. - Calidda        
Disclosure of associates [line items]        
Assets 6,204,218 6,979,152    
Liabilities 4,803,759 5,251,752    
Equity 1,400,459 1,727,400    
Income 3,734,932 3,647,158    
Expenses 3,291,043 3,223,946    
Net income for the year 443,889 423,212    
Gases del Caribe S.A. E.S.P.        
Disclosure of associates [line items]        
Assets 4,817,617 4,578,075    
Liabilities 3,625,934 3,417,111    
Equity 1,191,684 1,160,964    
Income 3,520,991 3,590,647    
Expenses 3,174,260 3,213,198    
Net income for the year 346,731 377,449    
Credibanco S.A.        
Disclosure of associates [line items]        
Assets 1,045,699 443,908    
Liabilities 159,027 165,954    
Equity 886,672 277,954    
Income 607,405 410,808    
Expenses 570,946 377,354    
Net income for the year 36,459 33,454    
Redeban Multicolor S.A.        
Disclosure of associates [line items]        
Assets 1,586,493 9,622,497    
Liabilities 1,367,392 9,405,167    
Equity 219,101 217,330    
Income 618,712 565,481    
Expenses 598,855 534,150    
Net income for the year 19,858 31,331    
A.C.H Colombia S.A.        
Disclosure of associates [line items]        
Assets 201,087 999,582    
Liabilities 49,488 870,224    
Equity 151,599 129,358    
Income 348,505 371,014    
Expenses 243,264 251,664    
Net income for the year 105,241 119,350    
Aerocali S.A.        
Disclosure of associates [line items]        
Assets 77,925 125,470    
Liabilities 21,645 54,456    
Equity 56,280 71,014    
Income 201,140 259,537    
Expenses 165,874 207,302    
Net income for the year 35,266 52,235    
ADL Digital Lab S.A.S.        
Disclosure of associates [line items]        
Assets 98,554 89,275    
Liabilities 42,760 37,050    
Equity 55,794 52,225    
Income 101,926 100,662    
Expenses 98,358 84,412    
Net income for the year 3,568 16,250    
Colombiana de Extrusion S.A. - Extrucol        
Disclosure of associates [line items]        
Assets 126,511 115,757    
Liabilities 81,864 67,478    
Equity 44,646 48,279    
Income 154,728 161,882    
Expenses 147,213 146,334    
Net income for the year 7,515 15,548    
Metrex S.A.        
Disclosure of associates [line items]        
Assets 51,127 44,452    
Liabilities 38,607 32,841    
Equity 12,520 11,611    
Income 75,916 67,163    
Expenses 72,468 64,669    
Net income for the year 3,448 2,494    
Energia Eficiente S.A.        
Disclosure of associates [line items]        
Assets 123,107 112,296    
Liabilities 105,497 91,629    
Equity 17,610 20,667    
Income 380,634 256,529    
Expenses 379,815 256,235    
Net income for the year $ 818 294    
Servicios de Identidad Digital S.A.S.        
Disclosure of associates [line items]        
Assets   31,639    
Liabilities   17,367    
Equity   14,272    
Income   145    
Expenses   4,478    
Net income for the year   $ (4,333)