v3.26.1
Risk management - Schedule of exposure to risk, Spain real estate business, segment information (Details) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of credit risk exposure [line items]      
Total consolidated assets (Total business) € 1,867,515 € 1,837,081 € 1,797,062
Impairment losses and credit risk allowances. Coverage for unimpaired assets (business in Spain) (300,026) (283,497) (243,203)
Accumulated impairment      
Disclosure of credit risk exposure [line items]      
Impairment losses and credit risk allowances. Coverage for unimpaired assets (business in Spain) 520 € 349 € 286
Spain      
Disclosure of credit risk exposure [line items]      
Total consolidated assets (Total business) 1,867,515    
Spain | Accumulated impairment      
Disclosure of credit risk exposure [line items]      
Impairment losses and credit risk allowances. Coverage for unimpaired assets (business in Spain) 1,086    
Spain | Customers excluding the public sector      
Disclosure of credit risk exposure [line items]      
Loans and advances to customers € 240,609