v3.26.1
Equity instruments - Disclosure of breakdown of equity instruments (Details) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of financial assets [line items]        
Financial assets held for trading € 252,318 € 230,253 € 176,921  
Non-trading financial assets mandatorily at fair value through profit or loss 7,761 6,130 5,910  
Financial assets at fair value through other comprehensive income 74,612 89,898 83,308  
Total financial assets 300,026 283,497 243,203  
Equity instruments        
Disclosure of financial assets [line items]        
Financial assets held for trading 22,030 16,636 15,057  
Non-trading financial assets mandatorily at fair value through profit or loss 5,815 4,641 4,068  
Financial assets at fair value through other comprehensive income 2,281 2,193 1,761 € 1,941
Total financial assets 30,126 23,470 20,886  
Shares of Spanish companies        
Disclosure of financial assets [line items]        
Total financial assets 5,083 3,730 3,540  
Shares of foreign companies        
Disclosure of financial assets [line items]        
Total financial assets 21,633 17,153 15,185  
Shares of investment funds        
Disclosure of financial assets [line items]        
Total financial assets € 3,410 € 2,587 € 2,161