v3.26.1
Financial Instruments - Maximum level of exposure to credit risk (Details) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Credit risk    
Maximum exposure to credit risk € 2,127 € 2,472
Non-current financial assets.    
Credit risk    
Maximum exposure to credit risk 512 490
Other current financial assets [member]    
Credit risk    
Maximum exposure to credit risk 36 244
Contractual assets    
Credit risk    
Maximum exposure to credit risk 83 36
Trade receivables    
Credit risk    
Maximum exposure to credit risk 651 705
Other receivables    
Credit risk    
Maximum exposure to credit risk 20 17
Cash and cash equivalents    
Credit risk    
Maximum exposure to credit risk 825 980
Receivables and contractual assets    
Credit risk    
Maximum exposure to credit risk 734 741
Receivables and contractual assets | Spain    
Credit risk    
Maximum exposure to credit risk 65 60
Receivables and contractual assets | Rest of European Union    
Credit risk    
Maximum exposure to credit risk 88 116
Receivables and contractual assets | United States of America    
Credit risk    
Maximum exposure to credit risk 38 46
Receivables and contractual assets | Other European countries    
Credit risk    
Maximum exposure to credit risk 151 92
Receivables and contractual assets | Other regions    
Credit risk    
Maximum exposure to credit risk € 392 € 427