v3.25.2
Other disclosures - Disclosure of concentration of portfolio (Details) - Of which: Financing for constructions and property development - Spain - EUR (€)
€ in Millions
Jun. 30, 2025
Dec. 31, 2024
Disclosure of credit risk exposure [line items]    
Financial assets € 2,696 € 2,517
Gross carrying amount    
Disclosure of credit risk exposure [line items]    
Financial assets 2,721 2,545
Without collateral | Gross carrying amount    
Disclosure of credit risk exposure [line items]    
Financial assets 17 13
With collateral | Gross carrying amount    
Disclosure of credit risk exposure [line items]    
Financial assets 2,704 2,532
With collateral | Gross carrying amount | Completed buildings    
Disclosure of credit risk exposure [line items]    
Financial assets 983 934
With collateral | Gross carrying amount | Building and other constructions under construction    
Disclosure of credit risk exposure [line items]    
Financial assets 1,706 1,580
With collateral | Gross carrying amount | Land    
Disclosure of credit risk exposure [line items]    
Financial assets 15 18
Residential | Gross carrying amount | Completed buildings    
Disclosure of credit risk exposure [line items]    
Financial assets 716 634
Residential | Gross carrying amount | Building and other constructions under construction    
Disclosure of credit risk exposure [line items]    
Financial assets 1,690 1,534
Other | Gross carrying amount | Completed buildings    
Disclosure of credit risk exposure [line items]    
Financial assets 267 300
Other | Gross carrying amount | Building and other constructions under construction    
Disclosure of credit risk exposure [line items]    
Financial assets 16 46
Developed consolidated land | Gross carrying amount | Land    
Disclosure of credit risk exposure [line items]    
Financial assets 13 13
Other land | Gross carrying amount | Land    
Disclosure of credit risk exposure [line items]    
Financial assets € 2 € 5