v3.26.1
Debt securities - Narrative (Details) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of financial assets [line items]        
Financial assets € 300,026 € 283,497 € 243,203  
Debt securities        
Disclosure of financial assets [line items]        
Financial assets 300,026 283,497 243,203  
Financial instruments purchased credit impaired | Fixed Income Assets        
Disclosure of financial assets [line items]        
Financial assets 8 44    
Gross carrying amount | Debt securities        
Disclosure of financial assets [line items]        
Financial assets 300,546 283,846 243,489  
Gross carrying amount | Financial instruments not credit-impaired | Stage 1        
Disclosure of financial assets [line items]        
Financial assets 196,509 196,514 176,697  
Gross carrying amount | Financial instruments not credit-impaired | Stage 2 and 3        
Disclosure of financial assets [line items]        
Financial assets 1,480 597 203  
Gross carrying amount | Financial instruments credit-impaired | Debt securities        
Disclosure of financial assets [line items]        
Financial assets 842 701 461  
Gross carrying amount | Financial instruments credit-impaired | Stage 2 and 3        
Disclosure of financial assets [line items]        
Financial assets 842 701 461  
Accumulated impairment        
Disclosure of financial assets [line items]        
Financial assets (520) (349) (286)  
Accumulated impairment | Debt securities        
Disclosure of financial assets [line items]        
Financial assets (520) (349) (286) € (226)
Accumulated impairment | Financial instruments not credit-impaired | Stage 1 | Debt securities        
Disclosure of financial assets [line items]        
Financial assets (62) (39) (30)  
Accumulated impairment | Financial instruments not credit-impaired | Stage 2 and 3 | Debt securities        
Disclosure of financial assets [line items]        
Financial assets (66) (9) (8)  
Accumulated impairment | Financial instruments credit-impaired | Stage 2 and 3 | Debt securities        
Disclosure of financial assets [line items]        
Financial assets € (392) € (301) € (248)