v3.26.1
Accounting policies - Non-current assets and liabilities associated with non-current assets held for sale (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of fair value measurement of assets [line items]    
Maximum percentage of appraisal company's total billings to Group 15.00%  
Fair value less costs to sell of non-current assets held for sale exceeding carrying amount € 551 € 553
Spain    
Disclosure of fair value measurement of assets [line items]    
Percentage of entity's total non-current assets held for sale 76.00%