v3.25.4
Non-Current Assets and Disposal Groups Held for Sale (Detail) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Components of Other Non-Current Assets and Disposal Groups Held for Sale [Line Items]    
Premises and equipment € 5,924 € 6,193
Assets and liabilities classified as held for sale    
Components of Other Non-Current Assets and Disposal Groups Held for Sale [Line Items]    
Total assets classified as held for sale 35 31
Assets and liabilities classified as held for sale | Premises and equipment    
Components of Other Non-Current Assets and Disposal Groups Held for Sale [Line Items]    
Premises and equipment 2 0
Assets and liabilities classified as held for sale | Other assets    
Components of Other Non-Current Assets and Disposal Groups Held for Sale [Line Items]    
Other assets 33 31
Assets and liabilities classified as held for sale | Other liabilities    
Components of Other Non-Current Assets and Disposal Groups Held for Sale [Line Items]    
Total liabilities classified as held for sale € 0 € 0