v3.25.4
Risk management - Non-derivative financial instruments to transition to alternative benchmarks (Details) - WIBOR - Non-derivative financial instruments to transition to alternative benchmarks - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure Of Financial Instrument Exposure [Line Items]    
Financial assets € 25,333 € 19,202
Financial liabilities 360 134
Off Balance Sheet Commitments Nominal Amount € 2,301 € 1,544