XML 365 R197.htm IDEA: XBRL DOCUMENT v3.25.0.1
Cash and cash equivalents and borrowings exInfrastructure project borrowings (Details) - Infrastructure project [Member] - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company € 474 € 538
Increase decrease in borrowings other infrastructure project company   (64)
Transchile charrúa transmisión sa [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 105 99
Increase decrease in borrowings other infrastructure project company 5  
Centella transmisión S.A. [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 106 125
Increase decrease in borrowings other infrastructure project company (18)  
Concesionaria de prisiones lledoners [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 63 65
Increase decrease in borrowings other infrastructure project company (2)  
Depusa aragon [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 24 25
Increase decrease in borrowings other infrastructure project company (2)  
Autovía de aragón SA [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 19 33
Increase decrease in borrowings other infrastructure project company (14)  
Budimex group [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 16 16
Increase decrease in borrowings other infrastructure project company 0  
Parque solar castilla [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 0 23
Increase decrease in borrowings other infrastructure project company (22)  
Dalaman international airport [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 94 104
Increase decrease in borrowings other infrastructure project company (10)  
UK waste treatment thalia [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 47 49
Increase decrease in borrowings other infrastructure project company (2)  
Long-term borrowings [member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 356 494
Long-term borrowings [member] | Transchile charrúa transmisión sa [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 105 91
Long-term borrowings [member] | Centella transmisión S.A. [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 105 125
Long-term borrowings [member] | Concesionaria de prisiones lledoners [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 61 63
Long-term borrowings [member] | Depusa aragon [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 22 24
Long-term borrowings [member] | Autovía de aragón SA [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 5 19
Long-term borrowings [member] | Budimex group [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 15 15
Long-term borrowings [member] | Parque solar castilla [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 0 20
Long-term borrowings [member] | Dalaman international airport [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 0 89
Long-term borrowings [member] | UK waste treatment thalia [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 44 48
Short-term borrowings [member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 119 44
Short-term borrowings [member] | Transchile charrúa transmisión sa [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 0 8
Short-term borrowings [member] | Centella transmisión S.A. [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 2 0
Short-term borrowings [member] | Concesionaria de prisiones lledoners [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 3 2
Short-term borrowings [member] | Depusa aragon [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 2 1
Short-term borrowings [member] | Autovía de aragón SA [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 14 14
Short-term borrowings [member] | Budimex group [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 1 1
Short-term borrowings [member] | Parque solar castilla [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 0 3
Short-term borrowings [member] | Dalaman international airport [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company 94 15
Short-term borrowings [member] | UK waste treatment thalia [Member]    
Other infrastructure projects company borrowings [Line Items]    
Borrowings other infrastructure project company € 3 € 1