v3.26.1
Memorandum items - Narrative (Details) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of contingent liabilities [line items]      
Non-managed marketed funds € 73,173 € 62,002 € 50,036
Third party debt securities and equity instruments held in custody 306,723 292,216 268,338
Financial instruments not credit-impaired | Stage 1      
Disclosure of contingent liabilities [line items]      
Exposure to credit risk on loan commitments and financial guarantee contracts 464,215 435,147 398,243
Financial instruments not credit-impaired | Stage 1 | Contingent liabilities and commitments      
Disclosure of contingent liabilities [line items]      
Other provisions 338 305 302
Financial instruments not credit-impaired | Stage 2 and 3      
Disclosure of contingent liabilities [line items]      
Exposure to credit risk on loan commitments and financial guarantee contracts 21,241 17,587 8,528
Financial instruments not credit-impaired | Stage 2 and 3 | Contingent liabilities and commitments      
Disclosure of contingent liabilities [line items]      
Other provisions 206 192 174
Financial instruments credit-impaired | Stage 2 and 3      
Disclosure of contingent liabilities [line items]      
Exposure to credit risk on loan commitments and financial guarantee contracts 1,345 1,521 1,526
Financial instruments credit-impaired | Stage 2 and 3 | Contingent liabilities and commitments      
Disclosure of contingent liabilities [line items]      
Other provisions € 169 € 213 € 226