v3.26.1
Equity instruments - Disclosure of changes in financial assets at fair value through other comprehensive income (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial assets [line items]      
Balance at beginning of the year € 89,898 € 83,308  
Changes in the fair value of equity instruments measured at fair value through other comprehensive income (EIGR) 715 (447) € 852
Balance at end of year 74,612 89,898 83,308
Equity instruments      
Disclosure of financial assets [line items]      
Balance at beginning of the year 2,193 1,761 1,941
Net additions (disposals) (81) (35) 11
Changes in the fair value of equity instruments measured at fair value through other comprehensive income (EIGR) 245 447 (162)
Changes in the RV hedged with micro-hedging transactions (76) 20 (29)
Balance at end of year € 2,281 € 2,193 € 1,761