v3.26.1
Segment information (Primary segments) - Narrative (Details)
€ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
EUR (€)
Jun. 30, 2026
EUR (€)
business
segment
Jun. 30, 2025
EUR (€)
Dec. 19, 2024
Operating segments        
Number of businesses | business   2    
Number of reportable segments | segment   6    
Gains or losses on non-current assets held for sale not classified as discontinued operations   € 4 € 217  
Caceis        
Operating segments        
Proportion of ownership interest in associate, sold (in percentage)       30.50%
Adjustments | TSB Banking Group Limited        
Operating segments        
Expense of restructuring activities € 250      
Adjustments | Brazil        
Operating segments        
Impairment and reversal of impairment on financial assets, net     467  
Impairment and reversal of impairment on financial assets, net of taxes and minority interest     231  
Adjustments | UK        
Operating segments        
Provisions, net of taxes and minority interest € 39 € 39    
Adjustments | Caceis        
Operating segments        
Gains or losses on non-current assets held for sale not classified as discontinued operations     € 231