v3.25.2
Other disclosures - Schedule of forborne loans (Details) - Credit risk
€ in Millions
Jun. 30, 2025
EUR (€)
contract
Dec. 31, 2024
EUR (€)
contract
Forborne loan portfolio | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 3,240,505 3,853,787
Forborne loan portfolio | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 520,140 532,182
Forborne loan portfolio | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 7,475 € 8,254
Forborne loan portfolio | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 4,346 € 5,204
Forborne loan portfolio | Credit entities | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 0 0
Forborne loan portfolio | Credit entities | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 0 0
Forborne loan portfolio | Credit entities | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 0 € 0
Forborne loan portfolio | Credit entities | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 0 € 0
Forborne loan portfolio | Public sector | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 22 23
Forborne loan portfolio | Public sector | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 5 9
Forborne loan portfolio | Public sector | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 3 € 2
Forborne loan portfolio | Public sector | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 0 € 0
Forborne loan portfolio | Other financial institutions and: individual shareholder | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 876 946
Forborne loan portfolio | Other financial institutions and: individual shareholder | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 650 605
Forborne loan portfolio | Other financial institutions and: individual shareholder | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 195 € 199
Forborne loan portfolio | Other financial institutions and: individual shareholder | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 52 € 52
Forborne loan portfolio | Non financial institutions and individual shareholder | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 450,530 543,934
Forborne loan portfolio | Non financial institutions and individual shareholder | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 43,882 47,854
Forborne loan portfolio | Non financial institutions and individual shareholder | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 3,027 € 3,678
Forborne loan portfolio | Non financial institutions and individual shareholder | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 1,238 € 1,398
Forborne loan portfolio | Of which: Financing for constructions and property development | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 318 12,688
Forborne loan portfolio | Of which: Financing for constructions and property development | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 310 1,765
Forborne loan portfolio | Of which: Financing for constructions and property development | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 337 € 672
Forborne loan portfolio | Of which: Financing for constructions and property development | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 2 € 30
Forborne loan portfolio | Other warehouses | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 2,789,077 3,308,884
Forborne loan portfolio | Other warehouses | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 475,603 483,714
Forborne loan portfolio | Other warehouses | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 4,250 € 4,375
Forborne loan portfolio | Other warehouses | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 3,056 € 3,754
Non-current assets or disposal groups classified as held for sale [member] | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 13,875 0
Non-current assets or disposal groups classified as held for sale [member] | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 4,834 0
Non-current assets or disposal groups classified as held for sale [member] | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 460 € 0
Non-current assets or disposal groups classified as held for sale [member] | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered 15 0
Gross carrying amount | Forborne loan portfolio | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 9,895 10,128
Gross carrying amount | Forborne loan portfolio | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 15,213 17,016
Gross carrying amount | Forborne loan portfolio | Credit entities | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 0 0
Gross carrying amount | Forborne loan portfolio | Credit entities | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 0 0
Gross carrying amount | Forborne loan portfolio | Public sector | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 8 9
Gross carrying amount | Forborne loan portfolio | Public sector | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 4 2
Gross carrying amount | Forborne loan portfolio | Other financial institutions and: individual shareholder | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 120 70
Gross carrying amount | Forborne loan portfolio | Other financial institutions and: individual shareholder | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 341 306
Gross carrying amount | Forborne loan portfolio | Non financial institutions and individual shareholder | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 5,505 5,515
Gross carrying amount | Forborne loan portfolio | Non financial institutions and individual shareholder | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 5,859 6,668
Gross carrying amount | Forborne loan portfolio | Of which: Financing for constructions and property development | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 18 103
Gross carrying amount | Forborne loan portfolio | Of which: Financing for constructions and property development | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 493 828
Gross carrying amount | Forborne loan portfolio | Other warehouses | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 4,262 4,534
Gross carrying amount | Forborne loan portfolio | Other warehouses | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 9,009 10,040
Gross carrying amount | Non-current assets or disposal groups classified as held for sale [member] | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 343 0
Gross carrying amount | Non-current assets or disposal groups classified as held for sale [member] | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 612 0
Accumulated impairment | Forborne loan portfolio | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 6,397 7,146
Accumulated impairment | Forborne loan portfolio | Credit entities | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 0 0
Accumulated impairment | Forborne loan portfolio | Public sector | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 8 4
Accumulated impairment | Forborne loan portfolio | Other financial institutions and: individual shareholder | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 156 93
Accumulated impairment | Forborne loan portfolio | Non financial institutions and individual shareholder | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 2,738 3,011
Accumulated impairment | Forborne loan portfolio | Of which: Financing for constructions and property development | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 48 171
Accumulated impairment | Forborne loan portfolio | Other warehouses | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 3,495 4,038
Accumulated impairment | Non-current assets or disposal groups classified as held for sale [member] | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets € 168 € 0
Credit impaired | Forborne loan portfolio | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 1,839,312 2,427,732
Credit impaired | Forborne loan portfolio | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 312,979 317,635
Credit impaired | Forborne loan portfolio | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 3,486 € 3,881
Credit impaired | Forborne loan portfolio | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 2,398 € 2,856
Credit impaired | Forborne loan portfolio | Credit entities | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 0 0
Credit impaired | Forborne loan portfolio | Credit entities | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 0 0
Credit impaired | Forborne loan portfolio | Credit entities | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 0 € 0
Credit impaired | Forborne loan portfolio | Credit entities | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 0 € 0
Credit impaired | Forborne loan portfolio | Public sector | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 9 8
Credit impaired | Forborne loan portfolio | Public sector | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 4 7
Credit impaired | Forborne loan portfolio | Public sector | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 3 € 1
Credit impaired | Forborne loan portfolio | Public sector | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 0 € 0
Credit impaired | Forborne loan portfolio | Other financial institutions and: individual shareholder | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 497 574
Credit impaired | Forborne loan portfolio | Other financial institutions and: individual shareholder | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 425 512
Credit impaired | Forborne loan portfolio | Other financial institutions and: individual shareholder | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 84 € 70
Credit impaired | Forborne loan portfolio | Other financial institutions and: individual shareholder | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 9 € 14
Credit impaired | Forborne loan portfolio | Non financial institutions and individual shareholder | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 268,958 353,838
Credit impaired | Forborne loan portfolio | Non financial institutions and individual shareholder | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 27,768 31,259
Credit impaired | Forborne loan portfolio | Non financial institutions and individual shareholder | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 1,439 € 1,622
Credit impaired | Forborne loan portfolio | Non financial institutions and individual shareholder | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 521 € 543
Credit impaired | Forborne loan portfolio | Of which: Financing for constructions and property development | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 198 8,789
Credit impaired | Forborne loan portfolio | Of which: Financing for constructions and property development | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 157 1,116
Credit impaired | Forborne loan portfolio | Of which: Financing for constructions and property development | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 77 € 154
Credit impaired | Forborne loan portfolio | Of which: Financing for constructions and property development | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 2 € 20
Credit impaired | Forborne loan portfolio | Other warehouses | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 1,569,848 2,073,312
Credit impaired | Forborne loan portfolio | Other warehouses | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 284,782 285,857
Credit impaired | Forborne loan portfolio | Other warehouses | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 1,960 € 2,188
Credit impaired | Forborne loan portfolio | Other warehouses | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 1,868 € 2,299
Credit impaired | Non-current assets or disposal groups classified as held for sale [member] | Without collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 6,975 0
Credit impaired | Non-current assets or disposal groups classified as held for sale [member] | With collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Number of transactions/operations | contract 1,802 0
Credit impaired | Non-current assets or disposal groups classified as held for sale [member] | Mortgage collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered € 122 € 0
Credit impaired | Non-current assets or disposal groups classified as held for sale [member] | Other collateral    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Maximum amount of the actual collateral that can be considered 8 0
Credit impaired | Gross carrying amount | Forborne loan portfolio | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 5,310 5,603
Credit impaired | Gross carrying amount | Forborne loan portfolio | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 8,103 9,082
Credit impaired | Gross carrying amount | Forborne loan portfolio | Credit entities | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 0 0
Credit impaired | Gross carrying amount | Forborne loan portfolio | Credit entities | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 0 0
Credit impaired | Gross carrying amount | Forborne loan portfolio | Public sector | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 5 3
Credit impaired | Gross carrying amount | Forborne loan portfolio | Public sector | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 4 1
Credit impaired | Gross carrying amount | Forborne loan portfolio | Other financial institutions and: individual shareholder | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 61 21
Credit impaired | Gross carrying amount | Forborne loan portfolio | Other financial institutions and: individual shareholder | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 163 125
Credit impaired | Gross carrying amount | Forborne loan portfolio | Non financial institutions and individual shareholder | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 2,921 2,956
Credit impaired | Gross carrying amount | Forborne loan portfolio | Non financial institutions and individual shareholder | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 2,820 3,106
Credit impaired | Gross carrying amount | Forborne loan portfolio | Of which: Financing for constructions and property development | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 4 64
Credit impaired | Gross carrying amount | Forborne loan portfolio | Of which: Financing for constructions and property development | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 83 218
Credit impaired | Gross carrying amount | Forborne loan portfolio | Other warehouses | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 2,323 2,623
Credit impaired | Gross carrying amount | Forborne loan portfolio | Other warehouses | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 5,116 5,850
Credit impaired | Gross carrying amount | Non-current assets or disposal groups classified as held for sale [member] | Without collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 202 0
Credit impaired | Gross carrying amount | Non-current assets or disposal groups classified as held for sale [member] | With collateral | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 236 0
Credit impaired | Accumulated impairment | Forborne loan portfolio | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 5,422 5,997
Credit impaired | Accumulated impairment | Forborne loan portfolio | Credit entities | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 0 0
Credit impaired | Accumulated impairment | Forborne loan portfolio | Public sector | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 8 3
Credit impaired | Accumulated impairment | Forborne loan portfolio | Other financial institutions and: individual shareholder | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 149 85
Credit impaired | Accumulated impairment | Forborne loan portfolio | Non financial institutions and individual shareholder | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 2,424 2,624
Credit impaired | Accumulated impairment | Forborne loan portfolio | Of which: Financing for constructions and property development | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 22 127
Credit impaired | Accumulated impairment | Forborne loan portfolio | Other warehouses | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets 2,841 3,285
Credit impaired | Accumulated impairment | Non-current assets or disposal groups classified as held for sale [member] | Loans And Receivables    
CURRENT REFINANCING AND RESTRUCTURING BALANCES    
Financial assets € 139 € 0