Hedging derivatives - Schedule of details of hedging instruments (Details) - EUR (€)
€ in Millions |
12 Months Ended |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
€ 505,992
|
€ 511,727
|
€ 418,294
|
| Carrying amount - Assets |
4,427
|
5,672
|
5,297
|
| Carrying amount - liabilities |
4,294
|
4,752
|
7,656
|
| Changes in fair value used for calculating hedge ineffectiveness |
749
|
1,461
|
(1,929)
|
| Fair value hedges |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
338,057
|
308,897
|
241,792
|
| Carrying amount - Assets |
2,387
|
2,584
|
2,661
|
| Carrying amount - liabilities |
2,588
|
2,964
|
4,231
|
| Changes in fair value used for calculating hedge ineffectiveness |
(454)
|
483
|
(1,869)
|
| Fair value hedges | Interest rate risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
305,348
|
290,152
|
225,377
|
| Carrying amount - Assets |
1,501
|
2,070
|
2,280
|
| Carrying amount - liabilities |
1,532
|
2,319
|
3,644
|
| Changes in fair value used for calculating hedge ineffectiveness |
(433)
|
373
|
(1,684)
|
| Fair value hedges | Interest rate risk | Interest rate swaps |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
285,983
|
276,715
|
215,382
|
| Carrying amount - Assets |
1,326
|
1,578
|
2,015
|
| Carrying amount - liabilities |
1,485
|
2,082
|
3,462
|
| Changes in fair value used for calculating hedge ineffectiveness |
(188)
|
156
|
(1,871)
|
| Fair value hedges | Interest rate risk | Future interest rate |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
19,365
|
|
|
| Carrying amount - Assets |
175
|
|
|
| Carrying amount - liabilities |
47
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
(247)
|
|
|
| Fair value hedges | Interest rate risk | Cap&Floor |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
0
|
|
|
| Carrying amount - Assets |
0
|
|
|
| Carrying amount - liabilities |
0
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
2
|
|
|
| Fair value hedges | Currency risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
2,656
|
4,411
|
4,331
|
| Carrying amount - Assets |
6
|
13
|
15
|
| Carrying amount - liabilities |
20
|
59
|
24
|
| Changes in fair value used for calculating hedge ineffectiveness |
46
|
101
|
(98)
|
| Fair value hedges | Currency risk | Future interest rate |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
242
|
2,059
|
2,418
|
| Carrying amount - Assets |
0
|
0
|
0
|
| Carrying amount - liabilities |
0
|
0
|
0
|
| Changes in fair value used for calculating hedge ineffectiveness |
(5)
|
91
|
(87)
|
| Fair value hedges | Currency risk | Fx forward |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
2,414
|
2,240
|
1,913
|
| Carrying amount - Assets |
6
|
8
|
15
|
| Carrying amount - liabilities |
20
|
39
|
24
|
| Changes in fair value used for calculating hedge ineffectiveness |
5
|
(2)
|
(11)
|
| Fair value hedges | Currency risk | Fx Swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
0
|
|
|
| Carrying amount - Assets |
0
|
|
|
| Carrying amount - liabilities |
0
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
46
|
|
|
| Fair value hedges | Interest rate and exchange rate risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
27,433
|
13,739
|
12,084
|
| Carrying amount - Assets |
735
|
501
|
366
|
| Carrying amount - liabilities |
1,035
|
586
|
563
|
| Changes in fair value used for calculating hedge ineffectiveness |
(76)
|
8
|
(87)
|
| Fair value hedges | Interest rate and exchange rate risk | Interest rate swaps |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
5,452
|
2,720
|
2,311
|
| Carrying amount - Assets |
38
|
15
|
9
|
| Carrying amount - liabilities |
80
|
65
|
179
|
| Changes in fair value used for calculating hedge ineffectiveness |
(8)
|
46
|
20
|
| Fair value hedges | Interest rate and exchange rate risk | Currency swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
21,981
|
11,019
|
9,773
|
| Carrying amount - Assets |
697
|
486
|
357
|
| Carrying amount - liabilities |
955
|
520
|
384
|
| Changes in fair value used for calculating hedge ineffectiveness |
(68)
|
(38)
|
(107)
|
| Fair value hedges | Base risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
500
|
500
|
|
| Carrying amount - Assets |
0
|
0
|
|
| Carrying amount - liabilities |
1
|
0
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
0
|
0
|
|
| Fair value hedges | Base risk | Interest rate swaps |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
500
|
500
|
|
| Carrying amount - Assets |
0
|
0
|
|
| Carrying amount - liabilities |
1
|
0
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
0
|
0
|
|
| Fair value hedges | Inflation risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
2,120
|
|
|
| Carrying amount - Assets |
145
|
|
|
| Carrying amount - liabilities |
0
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
9
|
|
|
| Fair value hedges | Inflation risk | Inflation swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
2,120
|
|
|
| Carrying amount - Assets |
145
|
|
|
| Carrying amount - liabilities |
0
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
9
|
|
|
| Fair value hedges | Equity risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
|
95
|
|
| Carrying amount - Assets |
|
0
|
|
| Carrying amount - liabilities |
|
0
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
|
1
|
|
| Fair value hedges | Equity risk | Equity swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
|
95
|
|
| Carrying amount - Assets |
|
0
|
|
| Carrying amount - liabilities |
|
0
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
|
1
|
|
| Cash flow hedges |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
148,269
|
179,271
|
157,796
|
| Carrying amount - Assets |
1,954
|
2,415
|
2,575
|
| Carrying amount - liabilities |
1,231
|
1,519
|
2,889
|
| Changes in fair value used for calculating hedge ineffectiveness |
1,067
|
558
|
1,828
|
| Cash flow hedges | Interest rate risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
99,969
|
134,503
|
97,780
|
| Carrying amount - Assets |
960
|
1,060
|
913
|
| Carrying amount - liabilities |
41
|
1,089
|
1,246
|
| Changes in fair value used for calculating hedge ineffectiveness |
1,171
|
144
|
2,181
|
| Cash flow hedges | Interest rate risk | Interest rate swaps |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
87,412
|
106,663
|
91,569
|
| Carrying amount - Assets |
937
|
788
|
872
|
| Carrying amount - liabilities |
34
|
478
|
1,214
|
| Changes in fair value used for calculating hedge ineffectiveness |
1,464
|
(130)
|
2,188
|
| Cash flow hedges | Interest rate risk | Future interest rate |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
12,357
|
6,621
|
3,020
|
| Carrying amount - Assets |
22
|
0
|
0
|
| Carrying amount - liabilities |
7
|
0
|
0
|
| Changes in fair value used for calculating hedge ineffectiveness |
(293)
|
225
|
6
|
| Cash flow hedges | Interest rate risk | Cap&Floor |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
200
|
|
|
| Carrying amount - Assets |
1
|
|
|
| Carrying amount - liabilities |
0
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
0
|
|
|
| Cash flow hedges | Currency risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
24,791
|
30,653
|
34,823
|
| Carrying amount - Assets |
605
|
738
|
1,001
|
| Carrying amount - liabilities |
473
|
258
|
663
|
| Changes in fair value used for calculating hedge ineffectiveness |
(233)
|
459
|
(498)
|
| Cash flow hedges | Currency risk | Fx forward |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
3,445
|
9,286
|
11,160
|
| Carrying amount - Assets |
62
|
362
|
502
|
| Carrying amount - liabilities |
20
|
51
|
241
|
| Changes in fair value used for calculating hedge ineffectiveness |
(18)
|
408
|
43
|
| Cash flow hedges | Currency risk | Fx Swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
1,606
|
|
|
| Carrying amount - Assets |
38
|
|
|
| Carrying amount - liabilities |
43
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
(3)
|
|
|
| Cash flow hedges | Currency risk | Currency swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
19,740
|
19,957
|
20,043
|
| Carrying amount - Assets |
505
|
323
|
446
|
| Carrying amount - liabilities |
410
|
189
|
397
|
| Changes in fair value used for calculating hedge ineffectiveness |
(212)
|
114
|
(537)
|
| Cash flow hedges | Interest rate and exchange rate risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
23,445
|
11,724
|
12,217
|
| Carrying amount - Assets |
298
|
539
|
484
|
| Carrying amount - liabilities |
718
|
172
|
74
|
| Changes in fair value used for calculating hedge ineffectiveness |
(3)
|
26
|
(98)
|
| Cash flow hedges | Interest rate and exchange rate risk | Interest rate swaps |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
3,253
|
3,092
|
2,847
|
| Carrying amount - Assets |
17
|
(6)
|
0
|
| Carrying amount - liabilities |
85
|
46
|
(45)
|
| Changes in fair value used for calculating hedge ineffectiveness |
51
|
75
|
227
|
| Cash flow hedges | Interest rate and exchange rate risk | Currency swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
20,192
|
8,632
|
9,370
|
| Carrying amount - Assets |
281
|
545
|
484
|
| Carrying amount - liabilities |
633
|
126
|
119
|
| Changes in fair value used for calculating hedge ineffectiveness |
(54)
|
(49)
|
(325)
|
| Cash flow hedges | Inflation risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
0
|
2,316
|
12,908
|
| Carrying amount - Assets |
0
|
58
|
155
|
| Carrying amount - liabilities |
0
|
0
|
906
|
| Changes in fair value used for calculating hedge ineffectiveness |
131
|
(69)
|
234
|
| Cash flow hedges | Inflation risk | Currency swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
|
|
12,495
|
| Carrying amount - Assets |
|
|
153
|
| Carrying amount - liabilities |
|
|
906
|
| Changes in fair value used for calculating hedge ineffectiveness |
|
|
240
|
| Cash flow hedges | Inflation risk | Inflation swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
0
|
2,163
|
|
| Carrying amount - Assets |
0
|
57
|
|
| Carrying amount - liabilities |
0
|
0
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
131
|
82
|
|
| Cash flow hedges | Equity risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
64
|
75
|
68
|
| Carrying amount - Assets |
91
|
20
|
22
|
| Carrying amount - liabilities |
|
0
|
0
|
| Changes in fair value used for calculating hedge ineffectiveness |
1
|
(2)
|
9
|
| Cash flow hedges | Equity risk | Option |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
64
|
75
|
68
|
| Carrying amount - Assets |
91
|
|
22
|
| Carrying amount - liabilities |
|
|
0
|
| Changes in fair value used for calculating hedge ineffectiveness |
1
|
|
9
|
| Cash flow hedges | Equity risk | Equity swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
|
75
|
|
| Carrying amount - Assets |
|
20
|
|
| Carrying amount - liabilities |
|
0
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
|
(2)
|
|
| Hedges of net investments in foreign operations |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
19,666
|
23,559
|
18,706
|
| Carrying amount - Assets |
86
|
673
|
61
|
| Carrying amount - liabilities |
475
|
269
|
536
|
| Changes in fair value used for calculating hedge ineffectiveness |
136
|
420
|
(1,888)
|
| Hedges of net investments in foreign operations | Currency risk |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
19,666
|
23,559
|
18,706
|
| Carrying amount - Assets |
86
|
673
|
61
|
| Carrying amount - liabilities |
475
|
269
|
536
|
| Changes in fair value used for calculating hedge ineffectiveness |
136
|
420
|
(1,888)
|
| Hedges of net investments in foreign operations | Currency risk | Fx forward |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
19,614
|
23,559
|
18,706
|
| Carrying amount - Assets |
86
|
673
|
61
|
| Carrying amount - liabilities |
474
|
269
|
536
|
| Changes in fair value used for calculating hedge ineffectiveness |
134
|
€ 420
|
€ (1,888)
|
| Hedges of net investments in foreign operations | Currency risk | Fx Swap |
|
|
|
| Disclosure of detailed information about hedged items [line items] |
|
|
|
| Notional amount |
52
|
|
|
| Carrying amount - Assets |
|
|
|
| Carrying amount - liabilities |
1
|
|
|
| Changes in fair value used for calculating hedge ineffectiveness |
€ 2
|
|
|