v3.26.1
Non-controlling interests - Schedule of financial information on the subsidiaries with significant non-controlling interests (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Non-controlling interests      
Total assets € 1,867,515 € 1,837,081 € 1,797,062
Total liabilities 1,754,767 1,729,754 1,692,821
Total profit 15,500 € 13,744 € 12,183
Santander Bank Polska S.A.      
Non-controlling interests      
Total assets 78,186    
Total liabilities 70,380    
Net assets 7,806    
Total income 3,724    
Total profit 1,528    
Banco Santander (Brasil) S.A.      
Non-controlling interests      
Total assets 209,453    
Total liabilities 193,380    
Net assets 16,073    
Total income 12,602    
Total profit 2,388    
Banco Santander - Chile      
Non-controlling interests      
Total assets 68,205    
Total liabilities 62,604    
Net assets 5,601    
Total income 2,714    
Total profit 1,043    
Grupo PSA      
Non-controlling interests      
Total assets 47,826    
Total liabilities 43,717    
Net assets 4,109    
Total income 1,305    
Total profit € 460