v3.26.1
Gains or losses on financial assets and liabilities - Schedule of exchange differences, net (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Gains (losses) on financial instruments [abstract]      
Foreign exchange gain (loss) € 407 € (216) € (22)