v3.25.4
Risk management - Summary forborne portfolio by forberance type (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of credit risk exposure [line items]    
Forborne assets € 13,461 € 12,817
% of total portfolio 1.50% 1.50%
Wholesale Banking    
Disclosure of credit risk exposure [line items]    
Forborne assets € 5,910 € 5,934
% of total portfolio 1.70% 1.90%
Retail Banking    
Disclosure of credit risk exposure [line items]    
Forborne assets € 7,551 € 6,883
% of total portfolio 1.40% 1.30%
Increase (decrease) of forborne assets € 600  
Forborne    
Disclosure of credit risk exposure [line items]    
Increase (decrease) of forborne assets 644  
Forborne | Wholesale Banking    
Disclosure of credit risk exposure [line items]    
Forborne assets € 5,900 € 5,900
% of total portfolio 1.70% 1.90%
Increase (decrease) of forborne assets € (24)  
Forborne | Retail Banking    
Disclosure of credit risk exposure [line items]    
Increase (decrease) of forborne assets 667  
Loan modification    
Disclosure of credit risk exposure [line items]    
Forborne assets € 11,883 € 11,726
% of total portfolio 1.30% 1.40%
Refinancing    
Disclosure of credit risk exposure [line items]    
Forborne assets € 1,578 € 1,091
% of total portfolio 0.20% 0.10%
Refinancing | Forborne    
Disclosure of credit risk exposure [line items]    
Increase (decrease) of forborne assets € 487  
Residential mortgages | Forborne    
Disclosure of credit risk exposure [line items]    
Increase (decrease) of forborne assets 608  
Of which: performing    
Disclosure of credit risk exposure [line items]    
Forborne assets 7,732 € 7,178
Of which: performing | Wholesale Banking    
Disclosure of credit risk exposure [line items]    
Forborne assets 3,194 3,191
Of which: performing | Retail Banking    
Disclosure of credit risk exposure [line items]    
Forborne assets 4,538 3,987
Of which: performing | Forborne | Wholesale Banking    
Disclosure of credit risk exposure [line items]    
Increase (decrease) of forborne assets 3  
Of which: performing | Loan modification    
Disclosure of credit risk exposure [line items]    
Forborne assets 6,581 6,734
Of which: performing | Refinancing    
Disclosure of credit risk exposure [line items]    
Forborne assets 1,151 444
Of which: non-performing    
Disclosure of credit risk exposure [line items]    
Forborne assets 5,729 5,640
Of which: non-performing | Wholesale Banking    
Disclosure of credit risk exposure [line items]    
Forborne assets 2,716 2,743
Of which: non-performing | Retail Banking    
Disclosure of credit risk exposure [line items]    
Forborne assets 3,013 2,897
Of which: non-performing | Forborne    
Disclosure of credit risk exposure [line items]    
Increase (decrease) of forborne assets 27  
Of which: non-performing | Loan modification    
Disclosure of credit risk exposure [line items]    
Forborne assets 5,302 4,993
Of which: non-performing | Refinancing    
Disclosure of credit risk exposure [line items]    
Forborne assets € 427 € 647