v3.26.1
CONCESSION ARRANGEMENTS RIGHTS - Summary of the main concession contracts (Details)
 12 Months Ended
Dec. 31, 2025
Energy and Gas concession arrangement [member] | Surtigas S.A. E.S.P.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Energy and Gas concession arrangement [member] | Transmetano E.S.P. S.A  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Energy and Gas concession arrangement [member] | Promigas S.A. E.S.P.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Energy and Gas concession arrangement [member] | Promioriente S.A. E.S.P  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Energy and Gas concession arrangement [member] | Gases de Occidente S.A. E.S.P  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Energy and Gas concession arrangement [member] | Compania Energetica de Occidente S.A. E.S.P.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Investment commitment, expansion, replacement and improvement of infrastructure, advance, percentage 62.34%
Energy and Gas concession arrangement [member] | Sociedad Portuaria El Cayao S.A. E.S.P  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Energy and Gas concession arrangement [member] | Gases del Pacifico S.A.C.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Energy and Gas concession arrangement [member] | Gases del Norte del Peru S.A.C.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Infrastructure concession arrangement [member] | Proyectos de Infraestructura S.A.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Infrastructure concession arrangement [member] | Concesionaria Panamericana S.A.S.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Infrastructure concession arrangement [member] | Concesionaria Vial Del Pacifico S.A.S.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 97.00%
Infrastructure concession arrangement [member] | Concesionaria Nueva Via del Mar S.A.S.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 4.11%
Infrastructure concession arrangement [member] | Concesionaria Vial Andina S.A.S.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 100.00%
Infrastructure concession arrangement [member] | Concesionaria Vial Del Oriente S.A.S.  
Disclosure of detailed information about service concession arrangements [line items]  
Percentage of progress of building 98.32%