v3.25.4
Derivatives and hedge accounting - Gross carrying value of derivatives used for net investment hedging (Details) - - Derivatives - -  hedges of net investments in foreign operations - – FX forwards and Cross currency swaps - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about hedging instruments [line items]    
Hedging instrument, assets € 68 € 82
Hedging instrument, liabilities € 74 € 117