v3.26.1
Other disclosures - Schedule of changes in financial instruments classified as Level 3 (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period € 1,110  
Purchases/Issuances 364  
Sales/Amortisation (29)  
Changes in fair value recognized in profit or loss 234  
Changes in fair value recognised in equity 0  
Level reclassifications (229)  
Other 46  
Financial liabilities, at fair value, period ending 1,496  
Level 3    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 18,487 € 15,319
Purchases/Issuances 11,387 10,583
Sales/Amortisation (9,247) (8,056)
Changes in fair value recognized in profit or loss 212 172
Changes in fair value recognised in equity (96) (98)
Level reclassifications (35)  
Level reclassifications   216
Other 149 (1,155)
Financial assets, at fair value, period ending 20,857 16,981
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 1,110 1,352
Purchases/Issuances   285
Sales/Amortisation   (307)
Changes in fair value recognized in profit or loss   320
Changes in fair value recognised in equity   0
Level reclassifications   (338)
Other   (96)
Financial liabilities, at fair value, period ending 1,496 1,216
Level 3 | Financial liabilities held for trading    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 864 934
Purchases/Issuances 234 285
Sales/Amortisation (29) (300)
Changes in fair value recognized in profit or loss 239 315
Changes in fair value recognised in equity 0 0
Level reclassifications (213) (183)
Other 25 (97)
Financial liabilities, at fair value, period ending 1,120 954
Level 3 | Financial liabilities held for trading | Credit institutions    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 0 0
Purchases/Issuances 198 26
Sales/Amortisation 0 0
Changes in fair value recognized in profit or loss 0 0
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 0 0
Financial liabilities, at fair value, period ending 198 26
Level 3 | Financial liabilities held for trading | Customers    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 0 0
Purchases/Issuances 0 52
Sales/Amortisation 0 0
Changes in fair value recognized in profit or loss 0 0
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 0 0
Financial liabilities, at fair value, period ending 0 52
Level 3 | Financial liabilities held for trading | Derivatives    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 864 934
Purchases/Issuances 36 207
Sales/Amortisation (29) (300)
Changes in fair value recognized in profit or loss 239 315
Changes in fair value recognised in equity 0 0
Level reclassifications (213) (183)
Other 25 (97)
Financial liabilities, at fair value, period ending 922 876
Level 3 | Financial liabilities held for trading | Swaps    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 418 479
Purchases/Issuances 36 32
Sales/Amortisation (19) (27)
Changes in fair value recognized in profit or loss 82 37
Changes in fair value recognised in equity 0 0
Level reclassifications (96)  
Level reclassifications   9
Other 10 (31)
Financial liabilities, at fair value, period ending 431 499
Level 3 | Financial liabilities held for trading | Exchange rate options    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 34 0
Purchases/Issuances 0 5
Sales/Amortisation 0 (2)
Changes in fair value recognized in profit or loss (9) (26)
Changes in fair value recognised in equity 0 0
Level reclassifications (10)  
Level reclassifications   14
Other 2 24
Financial liabilities, at fair value, period ending 17 15
Level 3 | Financial liabilities held for trading | Interest rate options    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 95 79
Purchases/Issuances 0 2
Sales/Amortisation (3) (1)
Changes in fair value recognized in profit or loss (1) 2
Changes in fair value recognised in equity 0 0
Level reclassifications (7) (18)
Other 0 47
Financial liabilities, at fair value, period ending 84 111
Level 3 | Financial liabilities held for trading | Index and securities options    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 151 294
Purchases/Issuances 0 135
Sales/Amortisation (2) (122)
Changes in fair value recognized in profit or loss 79 (36)
Changes in fair value recognised in equity 0 0
Level reclassifications (40) (6)
Other 0 (110)
Financial liabilities, at fair value, period ending 188 155
Level 3 | Financial liabilities held for trading | Securities and interest rate futures    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 0 0
Purchases/Issuances 0 0
Sales/Amortisation 0 (19)
Changes in fair value recognized in profit or loss 3 29
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 0 19
Financial liabilities, at fair value, period ending 3 29
Level 3 | Financial liabilities held for trading | Others    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 166 82
Purchases/Issuances 0 33
Sales/Amortisation (5) (129)
Changes in fair value recognized in profit or loss 85 309
Changes in fair value recognised in equity 0 0
Level reclassifications (60) (182)
Other 13 (46)
Financial liabilities, at fair value, period ending 199 67
Level 3 | Hedging derivatives    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 19 12
Purchases/Issuances 0 0
Sales/Amortisation 0 0
Changes in fair value recognized in profit or loss 0 20
Changes in fair value recognised in equity 0 0
Level reclassifications (15) (2)
Other 0 0
Financial liabilities, at fair value, period ending 4 30
Level 3 | Hedging derivatives | Swaps    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 19 12
Purchases/Issuances 0 0
Sales/Amortisation 0 0
Changes in fair value recognized in profit or loss 0 20
Changes in fair value recognised in equity 0 0
Level reclassifications (15) (2)
Other 0 (1)
Financial liabilities, at fair value, period ending 4 29
Level 3 | Hedging derivatives | Interest rate options    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 0
Purchases/Issuances 0  
Sales/Amortisation 0  
Changes in fair value recognized in profit or loss 0  
Changes in fair value recognised in equity 0  
Level reclassifications 0
Other 0 1
Financial liabilities, at fair value, period ending 0 1
Level 3 | Hedging derivatives | Others    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 0  
Purchases/Issuances 0  
Sales/Amortisation 0  
Changes in fair value recognized in profit or loss 0  
Changes in fair value recognised in equity 0  
Level reclassifications 0  
Other 0  
Financial liabilities, at fair value, period ending 0  
Level 3 | Financial liabilities designated at fair value through profit or loss    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 0 160
Purchases/Issuances 130 0
Sales/Amortisation 0 (7)
Changes in fair value recognized in profit or loss (1) 0
Changes in fair value recognised in equity 0 0
Level reclassifications (1) (153)
Other 0 0
Financial liabilities, at fair value, period ending 128 0
Level 3 | Liabilities under insurance contracts    
Changes in financial instruments, Liabilities    
Financial liabilities, at fair value, beginning period 227 246
Purchases/Issuances 0 0
Sales/Amortisation 0 0
Changes in fair value recognized in profit or loss (4) (15)
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 21 1
Financial liabilities, at fair value, period ending 244 232
Financial assets held for trading | Level 3    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 6,496 3,930
Purchases/Issuances 4,962 4,092
Sales/Amortisation (3,714) (2,697)
Changes in fair value recognized in profit or loss 190 64
Changes in fair value recognised in equity 0 0
Level reclassifications (148)  
Level reclassifications   129
Other 30 (41)
Financial assets, at fair value, period ending 7,816 5,477
Financial assets held for trading | Level 3 | Central Banks    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 441 0
Purchases/Issuances 609 437
Sales/Amortisation 0 0
Changes in fair value recognized in profit or loss 10 31
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 0 0
Financial assets, at fair value, period ending 1,060 468
Financial assets held for trading | Level 3 | Credit institutions    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 152 769
Purchases/Issuances 301 44
Sales/Amortisation (138) (745)
Changes in fair value recognized in profit or loss (4) 1
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 0 0
Financial assets, at fair value, period ending 311 69
Financial assets held for trading | Level 3 | Customers    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 4,592 1,801
Purchases/Issuances 3,900 3,484
Sales/Amortisation (3,318) (1,572)
Changes in fair value recognized in profit or loss 25 33
Changes in fair value recognised in equity 0 0
Level reclassifications (41)  
Level reclassifications   99
Other 0 (2)
Financial assets, at fair value, period ending 5,158 3,843
Financial assets held for trading | Level 3 | Debt instruments    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 340 413
Purchases/Issuances 130 47
Sales/Amortisation (174) (112)
Changes in fair value recognized in profit or loss (1) (16)
Changes in fair value recognised in equity 0 0
Level reclassifications   (77)
Level reclassifications 12  
Other 4 (43)
Financial assets, at fair value, period ending 311 212
Financial assets held for trading | Level 3 | Equity instruments    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period   0
Purchases/Issuances   0
Sales/Amortisation   0
Changes in fair value recognized in profit or loss   0
Changes in fair value recognised in equity   0
Level reclassifications   0
Other   0
Financial assets, at fair value, period ending   0
Financial assets held for trading | Level 3 | Derivatives    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 971 947
Purchases/Issuances 22 80
Sales/Amortisation (84) (268)
Changes in fair value recognized in profit or loss 160 15
Changes in fair value recognised in equity 0 0
Level reclassifications (119)  
Level reclassifications   107
Other 26 4
Financial assets, at fair value, period ending 976 885
Financial assets held for trading | Level 3 | Swaps    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 551 556
Purchases/Issuances 22 64
Sales/Amortisation (43) (94)
Changes in fair value recognized in profit or loss 86 (29)
Changes in fair value recognised in equity 0 0
Level reclassifications (72)  
Level reclassifications   19
Other 2 133
Financial assets, at fair value, period ending 546 649
Financial assets held for trading | Level 3 | Exchange rate options    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 39 2
Purchases/Issuances 0 6
Sales/Amortisation 0 (1)
Changes in fair value recognized in profit or loss 3 (29)
Changes in fair value recognised in equity 0 0
Level reclassifications (14)  
Level reclassifications   7
Other 3 30
Financial assets, at fair value, period ending 31 15
Financial assets held for trading | Level 3 | Interest rate options    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 39 30
Purchases/Issuances 0 0
Sales/Amortisation (38) (5)
Changes in fair value recognized in profit or loss 0 4
Changes in fair value recognised in equity 0 0
Level reclassifications 0 21
Other 0 (8)
Financial assets, at fair value, period ending 1 42
Financial assets held for trading | Level 3 | Index and securities options    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 120 241
Purchases/Issuances 0 4
Sales/Amortisation (2) (115)
Changes in fair value recognized in profit or loss 65 41
Changes in fair value recognised in equity 0 0
Level reclassifications   (8)
Level reclassifications 29  
Other 2 (107)
Financial assets, at fair value, period ending 214 56
Financial assets held for trading | Level 3 | Interest rate futures    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period   0
Purchases/Issuances   0
Sales/Amortisation   (20)
Changes in fair value recognized in profit or loss   2
Changes in fair value recognised in equity   0
Level reclassifications   0
Other   20
Financial assets, at fair value, period ending   2
Financial assets held for trading | Level 3 | Securities and interest rate futures    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 0  
Purchases/Issuances 0  
Sales/Amortisation 0  
Changes in fair value recognized in profit or loss 3  
Changes in fair value recognised in equity 0  
Level reclassifications 0  
Other 0  
Financial assets, at fair value, period ending 3  
Financial assets held for trading | Level 3 | Others    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 222 118
Purchases/Issuances 0 6
Sales/Amortisation (1) (33)
Changes in fair value recognized in profit or loss 3 26
Changes in fair value recognised in equity 0 0
Level reclassifications (62)  
Level reclassifications   68
Other 19 (64)
Financial assets, at fair value, period ending 181 121
Hedging derivatives | Level 3    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 7 20
Purchases/Issuances 0 3
Sales/Amortisation 0 (5)
Changes in fair value recognized in profit or loss (3) 7
Changes in fair value recognised in equity 0 0
Level reclassifications (9)  
Level reclassifications   0
Other 5 (11)
Financial assets, at fair value, period ending 0 14
Hedging derivatives | Level 3 | Swaps    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 7 20
Purchases/Issuances 0 3
Sales/Amortisation 0 (5)
Changes in fair value recognized in profit or loss (3) 7
Changes in fair value recognised in equity 0 0
Level reclassifications (9)  
Level reclassifications   0
Other 5 (11)
Financial assets, at fair value, period ending 0 14
Financial assets designated at fair value through profit or loss | Level 3    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 34 106
Purchases/Issuances 15 0
Sales/Amortisation (10) 0
Changes in fair value recognized in profit or loss 10 (11)
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 2 (50)
Financial assets, at fair value, period ending 51 45
Financial assets designated at fair value through profit or loss | Level 3 | Customers    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 14 20
Purchases/Issuances 3 0
Sales/Amortisation 0 0
Changes in fair value recognized in profit or loss 10 (3)
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 0 0
Financial assets, at fair value, period ending 27 17
Financial assets designated at fair value through profit or loss | Level 3 | Debt instruments    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 20 86
Purchases/Issuances 12 0
Sales/Amortisation (10) 0
Changes in fair value recognized in profit or loss 0 (8)
Changes in fair value recognised in equity 0 0
Level reclassifications 0 0
Other 2 (50)
Financial assets, at fair value, period ending 24 28
Non-trading financial assets mandatorily at fair value through profit or loss | Level 3    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 2,889 2,588
Purchases/Issuances 151 83
Sales/Amortisation (165) (436)
Changes in fair value recognized in profit or loss 15 112
Changes in fair value recognised in equity 0 0
Level reclassifications 58 2
Other 50 10
Financial assets, at fair value, period ending 2,998 2,359
Non-trading financial assets mandatorily at fair value through profit or loss | Level 3 | Customers    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 171 505
Purchases/Issuances 2 0
Sales/Amortisation 0 (395)
Changes in fair value recognized in profit or loss (47) 0
Changes in fair value recognised in equity 0 0
Level reclassifications 27 0
Other 12 (28)
Financial assets, at fair value, period ending 165 82
Non-trading financial assets mandatorily at fair value through profit or loss | Level 3 | Debt instruments    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 175 242
Purchases/Issuances 43 1
Sales/Amortisation (6) (4)
Changes in fair value recognized in profit or loss (5) 16
Changes in fair value recognised in equity 0 0
Level reclassifications 1 2
Other 22 (25)
Financial assets, at fair value, period ending 230 232
Non-trading financial assets mandatorily at fair value through profit or loss | Level 3 | Equity instruments    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 2,543 1,841
Purchases/Issuances 106 82
Sales/Amortisation (159) (37)
Changes in fair value recognized in profit or loss 67 96
Changes in fair value recognised in equity 0 0
Level reclassifications 30 0
Other 16 63
Financial assets, at fair value, period ending 2,603 2,045
Financial assets at fair value through other comprehensive income | Level 3    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 9,061 8,675
Purchases/Issuances 6,259 6,405
Sales/Amortisation (5,358) (4,918)
Changes in fair value recognized in profit or loss 0 0
Changes in fair value recognised in equity (96) (98)
Level reclassifications 64 85
Other 62 (1,063)
Financial assets, at fair value, period ending 9,992 9,086
Financial assets at fair value through other comprehensive income | Level 3 | Customers    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 7,902 7,253
Purchases/Issuances 6,108 5,982
Sales/Amortisation (5,193) (4,703)
Changes in fair value recognized in profit or loss 0 0
Changes in fair value recognised in equity (114) (72)
Level reclassifications 4 85
Other 7 (1,016)
Financial assets, at fair value, period ending 8,714 7,529
Financial assets at fair value through other comprehensive income | Level 3 | Debt instruments    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 887 1,047
Purchases/Issuances 145 423
Sales/Amortisation (161) (213)
Changes in fair value recognized in profit or loss 0 0
Changes in fair value recognised in equity 17 (25)
Level reclassifications 60 0
Other 57 39
Financial assets, at fair value, period ending 1,005 1,271
Financial assets at fair value through other comprehensive income | Level 3 | Equity instruments    
Changes in financial instruments, Assets    
Financial assets, at fair value, beginning period 272 375
Purchases/Issuances 6 0
Sales/Amortisation (4) (2)
Changes in fair value recognized in profit or loss 0 0
Changes in fair value recognised in equity 1 (1)
Level reclassifications 0 0
Other (2) (86)
Financial assets, at fair value, period ending € 273 € 286