v3.25.2
Other disclosures - Disclosure of foreclosed real estate assets (Details) - Foreclosed properties - Spain - EUR (€)
€ in Millions
Jun. 30, 2025
Dec. 31, 2024
Disclosure of credit risk exposure [line items]    
Loans and advances to customers € 2,057 € 2,131
Of which: Financing for constructions and property development    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,825 1,873
Completed Buildings    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 190 255
Completed Buildings | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 70 91
Completed Buildings | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 120 164
Buildings And Other Constructions Under Construction    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 93 54
Buildings And Other Constructions Under Construction | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 0 0
Buildings And Other Constructions Under Construction | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 93 54
Land Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,542 1,564
Land Loans | Developed Consolidated Land    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 399 467
Land Loans | Land Loans, Other    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,143 1,097
Home purchase loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 188 207
Other debt securities    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 44 51
Gross carrying amount    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 4,649 4,823
Gross carrying amount | Of which: Financing for constructions and property development    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 4,191 4,329
Gross carrying amount | Completed Buildings    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 594 707
Gross carrying amount | Completed Buildings | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 162 197
Gross carrying amount | Completed Buildings | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 432 510
Gross carrying amount | Buildings And Other Constructions Under Construction    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 160 95
Gross carrying amount | Buildings And Other Constructions Under Construction | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 0 0
Gross carrying amount | Buildings And Other Constructions Under Construction | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 160 95
Gross carrying amount | Land Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 3,437 3,527
Gross carrying amount | Land Loans | Developed Consolidated Land    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 852 1,000
Gross carrying amount | Land Loans | Land Loans, Other    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 2,585 2,527
Gross carrying amount | Home purchase loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 364 390
Gross carrying amount | Other debt securities    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 94 104
Accumulated impairment    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 2,592 2,692
Accumulated impairment | Of which: Financing for constructions and property development    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 2,366 2,456
Accumulated impairment | Completed Buildings    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 404 452
Accumulated impairment | Completed Buildings | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 92 106
Accumulated impairment | Completed Buildings | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 312 346
Accumulated impairment | Buildings And Other Constructions Under Construction    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 67 41
Accumulated impairment | Buildings And Other Constructions Under Construction | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 0 0
Accumulated impairment | Buildings And Other Constructions Under Construction | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 67 41
Accumulated impairment | Land Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,895 1,963
Accumulated impairment | Land Loans | Developed Consolidated Land    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 453 533
Accumulated impairment | Land Loans | Land Loans, Other    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,442 1,430
Accumulated impairment | Home purchase loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 176 183
Accumulated impairment | Other debt securities    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 50 53
Accumulated Impairment Since Initial Impairment    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,900 1,969
Accumulated Impairment Since Initial Impairment | Of which: Financing for constructions and property development    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,742 1,804
Accumulated Impairment Since Initial Impairment | Completed Buildings    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 344 382
Accumulated Impairment Since Initial Impairment | Completed Buildings | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 76 87
Accumulated Impairment Since Initial Impairment | Completed Buildings | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 268 295
Accumulated Impairment Since Initial Impairment | Buildings And Other Constructions Under Construction    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 49 30
Accumulated Impairment Since Initial Impairment | Buildings And Other Constructions Under Construction | Residential Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 0 0
Accumulated Impairment Since Initial Impairment | Buildings And Other Constructions Under Construction | Other Purposes Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 49 30
Accumulated Impairment Since Initial Impairment | Land Loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,349 1,392
Accumulated Impairment Since Initial Impairment | Land Loans | Developed Consolidated Land    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 269 318
Accumulated Impairment Since Initial Impairment | Land Loans | Land Loans, Other    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 1,080 1,074
Accumulated Impairment Since Initial Impairment | Home purchase loans    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers 119 123
Accumulated Impairment Since Initial Impairment | Other debt securities    
Disclosure of credit risk exposure [line items]    
Loans and advances to customers € 39 € 42