v3.25.4
Financial Instruments Carried at Fair Value - Recognitions of Trade Date Profit (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Financial Instruments carried at Fair Value [Abstract]    
Balance, beginning of year € 691 € 577
New trades during the period 513 343
Amortization (223) (141)
Matured trades (71) (53)
Subsequent move to observability [1] (38) (36) [2]
Exchange rate changes (5) 1
Balance, end of year € 866 € 691
[1] This includes situations where an input remains unobservable but has become insignificant in relation to the deferred trade date profit in periods subsequent to the trade
date
[2] During the second quarter of 2024, the Group refined its methodology for the significance test of unobservable inputs subsequent to the trade date. This resulted in
release of € 15 million in the second quarter of 2024