v3.25.4
Related Party Transactions - Transactions with Subsidiaries, Joint Ventures and Associates - Loans (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Related party transactions [abstract]    
Loans outstanding, beginning of year € 73 € 44
Net movement in loans during the period (7) 70
Changes in the group of consolidated companies 0 0
Exchange rate changes/other 0 (41)
Loans outstanding, end of year 66 73
Other credit risk related transactions:    
Allowance for loan losses 0 0
Provision for loan losses 0 1
Guarantees and commitments € 3 € 3