v3.26.1
Other disclosures - Valuation techniques for financial assets and liabilities (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Disclosure of detailed information about financial instruments [line items]    
Amount of CVA € 240  
Change in CVA (as a percent) 7.10%  
Amount of DVA € 291  
Change in DVA (as a percent) 2.10%  
Amount of other valuation adjustment € 324  
Change in other valuation adjustments (as a percent) 4.95%  
Level 3    
Disclosure of detailed information about financial instruments [line items]    
Gains (losses) recognised in profit or loss € (22) € (148)