XML 350 R182.htm IDEA: XBRL DOCUMENT v3.25.0.1
Capital and financing structure (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Infrastructure project [Member]    
Capital and financing structure [Line Items]    
Debt securities and bank borrowings of infrastructure projects € 8,400 € 7,915
Increase decrease net draw downs borrowings of infrastructure projects 34  
Increase decrease exchange rate effects borrowings of infrastructure projects 472  
Increase decrease changes in the scope of consolidation borrowings of infrastructure projects (22)  
Exinfrastructure project [Member]    
Capital and financing structure [Line Items]    
Debt securities and bank borrowings of infrastructure projects 2,886 € 3,463
Increase decrease net draw downs borrowings of infrastructure projects (580)  
Increase decrease exchange rate effects borrowings of infrastructure projects 4  
Increase decrease changes in the scope of consolidation borrowings of infrastructure projects € 0