v3.25.2
Debt securities - Summary of securities (Details) - EUR (€)
€ in Millions
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Debt securities      
Disclosure of financial assets [line items]      
Financial assets € 113,924 € 108,078  
Debt securities at fair value through other comprehensive income      
Disclosure of financial assets [line items]      
Financial assets 49,846 46,389 € 41,116
Debt securities at fair value through other comprehensive income | Debt securities      
Disclosure of financial assets [line items]      
Financial assets 45,618 42,219  
Debt securities at amortised cost | Debt securities      
Disclosure of financial assets [line items]      
Financial assets 53,805 50,273  
Debt securities at fair value through other comprehensive income and amortised cost | Debt securities      
Disclosure of financial assets [line items]      
Financial assets 99,423 92,493  
Trading assets | Debt securities      
Disclosure of financial assets [line items]      
Financial assets 10,515 10,080  
Debt securities designated and measured at fair value through profit or loss | Debt securities      
Disclosure of financial assets [line items]      
Financial assets 3,199 4,718  
Debt securities mandatorily measured at fair value through profit or loss | Debt securities      
Disclosure of financial assets [line items]      
Financial assets 787 789  
Total debt securities at fair value through profit or loss | Debt securities      
Disclosure of financial assets [line items]      
Financial assets € 14,501 € 15,586