v3.26.1
Debt securities - Schedule of changes in impairment losses on debt instruments (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Debt Instruments      
Impairment at beginning of year € (283,497) € (243,203)  
Impairment at end of year (300,026) (283,497) € (243,203)
Accumulated impairment      
Debt Instruments      
Impairment at beginning of year 349 286  
Impairment at end of year 520 349 286
Debt securities      
Debt Instruments      
Impairment at beginning of year (283,497) (243,203)  
Impairment at end of year (300,026) (283,497) (243,203)
Debt securities | Accumulated impairment      
Debt Instruments      
Impairment at beginning of year 349 286 226
Net impairment losses for the year 182 226 24
Impairment losses charged to income 238 234 36
Impairment losses reversed with a credit to income (56) (8) (12)
Assets written off 0 (131) 0
Exchange differences and other items (11) (32) 36
Impairment at end of year 520 349 286
Debt securities | Accumulated impairment | Financial assets at amortized cost      
Debt Instruments      
Net impairment losses for the year 182 227 23
Debt securities | Accumulated impairment | Financial assets at fair value through other comprehensive income      
Debt Instruments      
Net impairment losses for the year 0 (1) 1
Debt securities | Accumulated impairment | European Union      
Debt Instruments      
Impairment at beginning of year 23 22  
Impairment at end of year 26 23 22
Debt securities | Accumulated impairment | America      
Debt Instruments      
Impairment at beginning of year 326 264  
Impairment at end of year € 494 € 326 € 264