Other disclosures - Schedule of changes in financial instruments classified as Level 3 (Details) - EUR (€) € in Millions |
6 Months Ended |
Jun. 30, 2025 |
Jun. 30, 2024 |
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
€ 1,352
|
|
Purchases/Settlements |
285
|
|
Sales/Amortisation |
(307)
|
|
Changes in fair value recognized in profit or loss |
320
|
|
Changes in fair value recognised in equity |
0
|
|
Other |
(96)
|
|
Financial liabilities, at fair value, period ending |
1,216
|
|
Level reclassifications |
(338)
|
|
Level 3 |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
15,319
|
€ 10,351
|
Purchases/Settlements |
10,583
|
4,520
|
Sales/Amortisation |
(8,056)
|
(3,031)
|
Changes in fair value recognized in profit or loss |
172
|
132
|
Changes in fair value recognised in equity |
(98)
|
(123)
|
Level reclassifications |
216
|
|
Level reclassifications |
|
(551)
|
Other |
(1,155)
|
(103)
|
Financial assets, at fair value, period ending |
16,981
|
11,195
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
1,352
|
1,227
|
Purchases/Settlements |
|
557
|
Sales/Amortisation |
|
(143)
|
Changes in fair value recognized in profit or loss |
|
(28)
|
Changes in fair value recognised in equity |
|
0
|
Other |
|
(43)
|
Financial liabilities, at fair value, period ending |
1,216
|
1,433
|
Level reclassifications |
|
(137)
|
Level 3 | Financial liabilities held for trading |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
934
|
869
|
Purchases/Settlements |
285
|
293
|
Sales/Amortisation |
(300)
|
(135)
|
Changes in fair value recognized in profit or loss |
315
|
(46)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
(97)
|
(13)
|
Financial liabilities, at fair value, period ending |
954
|
802
|
Level reclassifications |
(183)
|
(166)
|
Level 3 | Financial liabilities held for trading | Credit institutions |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
0
|
|
Purchases/Settlements |
26
|
|
Sales/Amortisation |
0
|
|
Changes in fair value recognized in profit or loss |
0
|
|
Changes in fair value recognised in equity |
0
|
|
Other |
0
|
|
Financial liabilities, at fair value, period ending |
26
|
|
Level reclassifications |
0
|
|
Level 3 | Financial liabilities held for trading | Customers |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
0
|
|
Purchases/Settlements |
52
|
|
Sales/Amortisation |
0
|
|
Changes in fair value recognized in profit or loss |
0
|
|
Changes in fair value recognised in equity |
0
|
|
Other |
0
|
|
Financial liabilities, at fair value, period ending |
52
|
|
Level reclassifications |
0
|
|
Level 3 | Financial liabilities held for trading | Derivatives |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
934
|
869
|
Purchases/Settlements |
207
|
293
|
Sales/Amortisation |
(300)
|
(135)
|
Changes in fair value recognized in profit or loss |
315
|
(46)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
(97)
|
(13)
|
Financial liabilities, at fair value, period ending |
876
|
802
|
Level reclassifications |
(183)
|
(166)
|
Level 3 | Financial liabilities held for trading | Swaps |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
479
|
388
|
Purchases/Settlements |
32
|
84
|
Sales/Amortisation |
(27)
|
(23)
|
Changes in fair value recognized in profit or loss |
37
|
(52)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
(31)
|
0
|
Financial liabilities, at fair value, period ending |
499
|
304
|
Level reclassifications |
|
(93)
|
Level reclassifications |
9
|
|
Level 3 | Financial liabilities held for trading | Exchange rate options |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
0
|
8
|
Purchases/Settlements |
5
|
0
|
Sales/Amortisation |
(2)
|
(1)
|
Changes in fair value recognized in profit or loss |
(26)
|
(4)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
24
|
(1)
|
Financial liabilities, at fair value, period ending |
15
|
0
|
Level reclassifications |
|
(2)
|
Level reclassifications |
14
|
|
Level 3 | Financial liabilities held for trading | Interest rate options |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
79
|
139
|
Purchases/Settlements |
2
|
1
|
Sales/Amortisation |
(1)
|
(19)
|
Changes in fair value recognized in profit or loss |
2
|
7
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
47
|
1
|
Financial liabilities, at fair value, period ending |
111
|
65
|
Level reclassifications |
(18)
|
(64)
|
Level 3 | Financial liabilities held for trading | Index and securities options |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
294
|
187
|
Purchases/Settlements |
135
|
1
|
Sales/Amortisation |
(122)
|
(17)
|
Changes in fair value recognized in profit or loss |
(36)
|
71
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
(110)
|
(13)
|
Financial liabilities, at fair value, period ending |
155
|
222
|
Level reclassifications |
(6)
|
(7)
|
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
|
|
Purchases/Settlements |
0
|
|
Sales/Amortisation |
(19)
|
|
Changes in fair value recognized in profit or loss |
29
|
|
Changes in fair value recognised in equity |
0
|
|
Other |
19
|
|
Financial liabilities, at fair value, period ending |
29
|
|
Level reclassifications |
0
|
|
Level 3 | Financial liabilities held for trading | Others |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
82
|
147
|
Purchases/Settlements |
33
|
207
|
Sales/Amortisation |
(129)
|
(75)
|
Changes in fair value recognized in profit or loss |
309
|
(68)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
(46)
|
0
|
Financial liabilities, at fair value, period ending |
67
|
211
|
Level reclassifications |
(182)
|
0
|
Level 3 | Hedging derivatives |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
12
|
6
|
Purchases/Settlements |
0
|
0
|
Sales/Amortisation |
0
|
0
|
Changes in fair value recognized in profit or loss |
20
|
(1)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
0
|
0
|
Financial liabilities, at fair value, period ending |
30
|
5
|
Level reclassifications |
(2)
|
0
|
Level 3 | Hedging derivatives | Swaps |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
12
|
6
|
Purchases/Settlements |
0
|
0
|
Sales/Amortisation |
0
|
0
|
Changes in fair value recognized in profit or loss |
20
|
(2)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
(1)
|
0
|
Financial liabilities, at fair value, period ending |
29
|
4
|
Level reclassifications |
(2)
|
0
|
Level 3 | Hedging derivatives | Interest rate options |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
0
|
0
|
Purchases/Settlements |
0
|
0
|
Sales/Amortisation |
0
|
0
|
Changes in fair value recognized in profit or loss |
0
|
1
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
1
|
0
|
Financial liabilities, at fair value, period ending |
1
|
1
|
Level reclassifications |
0
|
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 |
160
|
29
|
Purchases/Settlements |
0
|
264
|
Sales/Amortisation |
(7)
|
(8)
|
Changes in fair value recognized in profit or loss |
0
|
38
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
0
|
0
|
Financial liabilities, at fair value, period ending |
0
|
352
|
Level reclassifications |
(153)
|
|
Level reclassifications |
|
29
|
Level 3 | Liabilities under insurance contracts |
|
|
Changes in financial instruments, Liabilities |
|
|
Financial liabilities, at fair value, beginning period |
246
|
323
|
Purchases/Settlements |
0
|
0
|
Sales/Amortisation |
0
|
0
|
Changes in fair value recognized in profit or loss |
(15)
|
(19)
|
Changes in fair value recognised in equity |
0
|
0
|
Other |
1
|
(30)
|
Financial liabilities, at fair value, period ending |
232
|
274
|
Level reclassifications |
0
|
0
|
Financial assets held for trading | Level 3 |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
3,930
|
2,086
|
Purchases/Settlements |
4,092
|
726
|
Sales/Amortisation |
(2,697)
|
(194)
|
Changes in fair value recognized in profit or loss |
64
|
33
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
129
|
|
Level reclassifications |
|
(566)
|
Other |
(41)
|
(42)
|
Financial assets, at fair value, period ending |
5,477
|
2,043
|
Financial assets held for trading | Level 3 | Central Banks |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
0
|
|
Purchases/Settlements |
437
|
|
Sales/Amortisation |
0
|
|
Changes in fair value recognized in profit or loss |
31
|
|
Changes in fair value recognised in equity |
0
|
|
Level reclassifications |
0
|
|
Other |
0
|
|
Financial assets, at fair value, period ending |
468
|
|
Financial assets held for trading | Level 3 | Credit institutions |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
769
|
|
Purchases/Settlements |
44
|
|
Sales/Amortisation |
(745)
|
|
Changes in fair value recognized in profit or loss |
1
|
|
Changes in fair value recognised in equity |
0
|
|
Level reclassifications |
0
|
|
Other |
0
|
|
Financial assets, at fair value, period ending |
69
|
|
Financial assets held for trading | Level 3 | Customers |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
1,801
|
|
Purchases/Settlements |
3,484
|
|
Sales/Amortisation |
(1,572)
|
|
Changes in fair value recognized in profit or loss |
33
|
|
Changes in fair value recognised in equity |
0
|
|
Level reclassifications |
99
|
|
Other |
(2)
|
|
Financial assets, at fair value, period ending |
3,843
|
|
Financial assets held for trading | Level 3 | Debt instruments |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
413
|
914
|
Purchases/Settlements |
47
|
84
|
Sales/Amortisation |
(112)
|
(2)
|
Changes in fair value recognized in profit or loss |
(16)
|
(18)
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
(77)
|
(428)
|
Other |
(43)
|
(16)
|
Financial assets, at fair value, period ending |
212
|
534
|
Financial assets held for trading | Level 3 | Equity instruments |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
0
|
1
|
Purchases/Settlements |
0
|
0
|
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
|
|
Level reclassifications |
|
0
|
Other |
0
|
0
|
Financial assets, at fair value, period ending |
0
|
1
|
Financial assets held for trading | Level 3 | Derivatives |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
947
|
1,147
|
Purchases/Settlements |
80
|
367
|
Sales/Amortisation |
(268)
|
(168)
|
Changes in fair value recognized in profit or loss |
15
|
49
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
107
|
|
Level reclassifications |
|
(168)
|
Other |
4
|
(26)
|
Financial assets, at fair value, period ending |
885
|
1,201
|
Financial assets held for trading | Level 3 | Swaps |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
556
|
577
|
Purchases/Settlements |
64
|
281
|
Sales/Amortisation |
(94)
|
(94)
|
Changes in fair value recognized in profit or loss |
(29)
|
(3)
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
19
|
38
|
Other |
133
|
0
|
Financial assets, at fair value, period ending |
649
|
799
|
Financial assets held for trading | Level 3 | Exchange rate options |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
2
|
9
|
Purchases/Settlements |
6
|
0
|
Sales/Amortisation |
(1)
|
(1)
|
Changes in fair value recognized in profit or loss |
(29)
|
3
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
7
|
|
Level reclassifications |
|
(2)
|
Other |
30
|
(1)
|
Financial assets, at fair value, period ending |
15
|
8
|
Financial assets held for trading | Level 3 | Interest rate options |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
30
|
153
|
Purchases/Settlements |
0
|
0
|
Sales/Amortisation |
(5)
|
0
|
Changes in fair value recognized in profit or loss |
4
|
(16)
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
21
|
|
Level reclassifications |
|
(107)
|
Other |
(8)
|
0
|
Financial assets, at fair value, period ending |
42
|
30
|
Financial assets held for trading | Level 3 | Interest rate futures |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
0
|
|
Purchases/Settlements |
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 | Index and securities options |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
241
|
235
|
Purchases/Settlements |
4
|
11
|
Sales/Amortisation |
(115)
|
(47)
|
Changes in fair value recognized in profit or loss |
41
|
79
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
(8)
|
(66)
|
Other |
(107)
|
(16)
|
Financial assets, at fair value, period ending |
56
|
196
|
Financial assets held for trading | Level 3 | Others |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
118
|
173
|
Purchases/Settlements |
6
|
75
|
Sales/Amortisation |
(33)
|
(26)
|
Changes in fair value recognized in profit or loss |
26
|
(14)
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
68
|
|
Level reclassifications |
|
(31)
|
Other |
(64)
|
(9)
|
Financial assets, at fair value, period ending |
121
|
168
|
Hedging derivatives | Level 3 |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
20
|
|
Purchases/Settlements |
3
|
|
Sales/Amortisation |
(5)
|
|
Changes in fair value recognized in profit or loss |
7
|
|
Changes in fair value recognised in equity |
0
|
|
Level reclassifications |
0
|
|
Other |
(11)
|
|
Financial assets, at fair value, period ending |
14
|
|
Hedging derivatives | Level 3 | Swaps |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
20
|
|
Purchases/Settlements |
3
|
|
Sales/Amortisation |
(5)
|
|
Changes in fair value recognized in profit or loss |
7
|
|
Changes in fair value recognised in equity |
0
|
|
Level reclassifications |
0
|
|
Other |
(11)
|
|
Financial assets, at fair value, period ending |
14
|
|
Financial assets at fair value through profit and loss | Level 3 |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
106
|
181
|
Purchases/Settlements |
0
|
593
|
Sales/Amortisation |
0
|
(126)
|
Changes in fair value recognized in profit or loss |
(11)
|
28
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
0
|
61
|
Other |
(50)
|
(28)
|
Financial assets, at fair value, period ending |
45
|
709
|
Financial assets at fair value through profit and loss | Level 3 | Customers |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
20
|
31
|
Purchases/Settlements |
0
|
188
|
Sales/Amortisation |
0
|
(3)
|
Changes in fair value recognized in profit or loss |
(3)
|
(8)
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
0
|
|
Level reclassifications |
|
0
|
Other |
0
|
16
|
Financial assets, at fair value, period ending |
17
|
224
|
Financial assets at fair value through profit and loss | Level 3 | Debt instruments |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
86
|
150
|
Purchases/Settlements |
0
|
405
|
Sales/Amortisation |
0
|
(123)
|
Changes in fair value recognized in profit or loss |
(8)
|
36
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
0
|
61
|
Other |
(50)
|
(44)
|
Financial assets, at fair value, period ending |
28
|
485
|
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 |
2,588
|
2,095
|
Purchases/Settlements |
83
|
167
|
Sales/Amortisation |
(436)
|
(189)
|
Changes in fair value recognized in profit or loss |
112
|
71
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
2
|
|
Level reclassifications |
|
(69)
|
Other |
10
|
20
|
Financial assets, at fair value, period ending |
2,359
|
2,095
|
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 |
505
|
287
|
Purchases/Settlements |
0
|
43
|
Sales/Amortisation |
(395)
|
(97)
|
Changes in fair value recognized in profit or loss |
0
|
45
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
0
|
|
Level reclassifications |
|
(140)
|
Other |
(28)
|
(6)
|
Financial assets, at fair value, period ending |
82
|
132
|
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 |
242
|
313
|
Purchases/Settlements |
1
|
5
|
Sales/Amortisation |
(4)
|
(73)
|
Changes in fair value recognized in profit or loss |
16
|
2
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
2
|
|
Level reclassifications |
|
0
|
Other |
(25)
|
(3)
|
Financial assets, at fair value, period ending |
232
|
244
|
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 |
1,841
|
1,495
|
Purchases/Settlements |
82
|
119
|
Sales/Amortisation |
(37)
|
(19)
|
Changes in fair value recognized in profit or loss |
96
|
24
|
Changes in fair value recognised in equity |
0
|
0
|
Level reclassifications |
0
|
71
|
Other |
63
|
29
|
Financial assets, at fair value, period ending |
2,045
|
1,719
|
Financial assets at fair value through other comprehensive income | Level 3 |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
8,675
|
5,989
|
Purchases/Settlements |
6,405
|
3,034
|
Sales/Amortisation |
(4,918)
|
(2,522)
|
Changes in fair value recognized in profit or loss |
0
|
0
|
Changes in fair value recognised in equity |
(98)
|
(123)
|
Level reclassifications |
85
|
23
|
Other |
(1,063)
|
(53)
|
Financial assets, at fair value, period ending |
9,086
|
6,348
|
Financial assets at fair value through other comprehensive income | Level 3 | Customers |
|
|
Changes in financial instruments, Assets |
|
|
Financial assets, at fair value, beginning period |
7,253
|
4,938
|
Purchases/Settlements |
5,982
|
2,845
|
Sales/Amortisation |
(4,703)
|
(2,505)
|
Changes in fair value recognized in profit or loss |
0
|
0
|
Changes in fair value recognised in equity |
(72)
|
20
|
Level reclassifications |
85
|
16
|
Other |
(1,016)
|
2
|
Financial assets, at fair value, period ending |
7,529
|
5,316
|
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 |
1,047
|
559
|
Purchases/Settlements |
423
|
186
|
Sales/Amortisation |
(213)
|
(2)
|
Changes in fair value recognized in profit or loss |
0
|
0
|
Changes in fair value recognised in equity |
(25)
|
(17)
|
Level reclassifications |
0
|
7
|
Other |
39
|
(56)
|
Financial assets, at fair value, period ending |
1,271
|
677
|
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 |
375
|
492
|
Purchases/Settlements |
0
|
3
|
Sales/Amortisation |
(2)
|
(15)
|
Changes in fair value recognized in profit or loss |
0
|
0
|
Changes in fair value recognised in equity |
(1)
|
(126)
|
Level reclassifications |
0
|
|
Level reclassifications |
|
0
|
Other |
(86)
|
1
|
Financial assets, at fair value, period ending |
€ 286
|
€ 355
|