Other disclosures - Schedule of certain financial assets and liabilities by maturity (Details) - EUR (€)
€ in Millions |
Dec. 31, 2025 |
Aug. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
| Assets |
|
|
|
|
| Cash, cash balances at central banks and other deposits on demand |
€ 152,281
|
€ 96,923
|
€ 192,208
|
€ 220,342
|
| Financial assets at fair value through other comprehensive income |
72,331
|
|
87,705
|
81,547
|
| Financial assets at amortised cost |
1,202,689
|
|
1,203,707
|
1,191,403
|
| Total certain assets |
1,427,301
|
|
1,483,620
|
1,493,292
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
1,421,184
|
|
1,484,322
|
1,468,703
|
| Difference (assets less liabilities) |
6,117
|
|
(702)
|
24,589
|
| On demand |
|
|
|
|
| Assets |
|
|
|
|
| Cash, cash balances at central banks and other deposits on demand |
152,281
|
|
192,208
|
220,342
|
| Financial assets at fair value through other comprehensive income |
0
|
|
0
|
0
|
| Financial assets at amortised cost |
40,174
|
|
41,652
|
40,687
|
| Total certain assets |
192,455
|
|
233,860
|
261,029
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
700,717
|
|
720,659
|
711,093
|
| Difference (assets less liabilities) |
(508,262)
|
|
(486,799)
|
(450,064)
|
| Within 3 months |
|
|
|
|
| Assets |
|
|
|
|
| Cash, cash balances at central banks and other deposits on demand |
|
|
0
|
0
|
| Financial assets at fair value through other comprehensive income |
12,721
|
|
13,401
|
13,544
|
| Financial assets at amortised cost |
213,109
|
|
208,565
|
202,066
|
| Total certain assets |
225,830
|
|
221,966
|
215,610
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
271,366
|
|
256,651
|
246,898
|
| Difference (assets less liabilities) |
(45,536)
|
|
(34,685)
|
(31,288)
|
| 3 to 12 months |
|
|
|
|
| Assets |
|
|
|
|
| Cash, cash balances at central banks and other deposits on demand |
|
|
0
|
0
|
| Financial assets at fair value through other comprehensive income |
8,593
|
|
9,153
|
9,234
|
| Financial assets at amortised cost |
173,400
|
|
167,974
|
171,494
|
| Total certain assets |
181,993
|
|
177,127
|
180,728
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
147,951
|
|
171,362
|
182,516
|
| Difference (assets less liabilities) |
34,042
|
|
5,765
|
(1,788)
|
| 1 to 3 years |
|
|
|
|
| Assets |
|
|
|
|
| Cash, cash balances at central banks and other deposits on demand |
|
|
0
|
0
|
| Financial assets at fair value through other comprehensive income |
14,012
|
|
23,902
|
19,372
|
| Financial assets at amortised cost |
208,743
|
|
220,871
|
232,190
|
| Total certain assets |
222,755
|
|
244,773
|
251,562
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
132,783
|
|
155,620
|
161,784
|
| Difference (assets less liabilities) |
89,972
|
|
89,153
|
89,778
|
| 3 to 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Cash, cash balances at central banks and other deposits on demand |
|
|
0
|
0
|
| Financial assets at fair value through other comprehensive income |
8,315
|
|
8,905
|
14,162
|
| Financial assets at amortised cost |
163,374
|
|
176,710
|
158,556
|
| Total certain assets |
171,689
|
|
185,615
|
172,718
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
72,048
|
|
89,229
|
88,527
|
| Difference (assets less liabilities) |
99,641
|
|
96,386
|
84,191
|
| More than 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Cash, cash balances at central banks and other deposits on demand |
|
|
0
|
0
|
| Financial assets at fair value through other comprehensive income |
28,690
|
|
32,344
|
25,235
|
| Financial assets at amortised cost |
403,889
|
|
387,935
|
386,410
|
| Total certain assets |
432,579
|
|
420,279
|
411,645
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
96,319
|
|
90,801
|
77,885
|
| Difference (assets less liabilities) |
336,260
|
|
329,478
|
333,760
|
| Deposits |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
1,072,384
|
|
1,126,439
|
1,125,308
|
| Deposits | On demand |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
688,927
|
|
707,418
|
697,339
|
| Deposits | Within 3 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
223,636
|
|
213,220
|
210,538
|
| Deposits | 3 to 12 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
96,132
|
|
121,914
|
118,035
|
| Deposits | 1 to 3 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
37,030
|
|
46,431
|
61,332
|
| Deposits | 3 to 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
9,216
|
|
21,510
|
22,161
|
| Deposits | More than 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
17,443
|
|
15,946
|
15,903
|
| Central banks |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
18,542
|
|
24,882
|
48,782
|
| Central banks | On demand |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
857
|
|
17
|
168
|
| Central banks | Within 3 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
8,550
|
|
9,063
|
20,224
|
| Central banks | 3 to 12 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
4,615
|
|
11,022
|
6,941
|
| Central banks | 1 to 3 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
2,892
|
|
4,772
|
16,846
|
| Central banks | 3 to 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
0
|
|
0
|
4,581
|
| Central banks | More than 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
1,628
|
|
8
|
22
|
| Credit institutions |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
74,692
|
|
90,012
|
81,246
|
| Credit institutions | On demand |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
6,342
|
|
13,948
|
6,572
|
| Credit institutions | Within 3 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
34,993
|
|
27,149
|
25,990
|
| Credit institutions | 3 to 12 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
11,677
|
|
19,300
|
21,390
|
| Credit institutions | 1 to 3 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
12,197
|
|
15,655
|
13,434
|
| Credit institutions | 3 to 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
1,845
|
|
6,477
|
5,963
|
| Credit institutions | More than 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
7,638
|
|
7,483
|
7,897
|
| Customer deposits |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
979,150
|
|
1,011,545
|
995,280
|
| Customer deposits | On demand |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
681,728
|
|
693,453
|
690,599
|
| Customer deposits | Within 3 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
180,093
|
|
177,008
|
164,324
|
| Customer deposits | 3 to 12 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
79,840
|
|
91,592
|
89,704
|
| Customer deposits | 1 to 3 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
21,941
|
|
26,004
|
31,052
|
| Customer deposits | 3 to 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
7,371
|
|
15,033
|
11,617
|
| Customer deposits | More than 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
8,177
|
|
8,455
|
7,984
|
| Marketable debt securities |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
312,704
|
|
317,967
|
303,208
|
| Marketable debt securities | On demand |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
0
|
|
0
|
0
|
| Marketable debt securities | Within 3 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
38,875
|
|
35,570
|
28,371
|
| Marketable debt securities | 3 to 12 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
48,971
|
|
47,977
|
63,440
|
| Marketable debt securities | 1 to 3 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
94,735
|
|
100,451
|
92,554
|
| Marketable debt securities | 3 to 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
62,275
|
|
60,128
|
57,639
|
| Marketable debt securities | More than 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
67,848
|
|
73,841
|
61,204
|
| Other financial liabilities |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
36,096
|
|
39,916
|
40,187
|
| Other financial liabilities | On demand |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
11,790
|
|
13,241
|
13,754
|
| Other financial liabilities | Within 3 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
8,855
|
|
7,861
|
7,989
|
| Other financial liabilities | 3 to 12 months |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
2,848
|
|
1,471
|
1,041
|
| Other financial liabilities | 1 to 3 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
1,018
|
|
8,738
|
7,898
|
| Other financial liabilities | 3 to 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
557
|
|
7,591
|
8,727
|
| Other financial liabilities | More than 5 years |
|
|
|
|
| Liabilities |
|
|
|
|
| Financial liabilities at amortized cost |
11,028
|
|
1,014
|
778
|
| Debt securities |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
58,305
|
|
76,558
|
73,565
|
| Financial assets at amortised cost |
140,014
|
|
120,949
|
103,559
|
| Debt securities | On demand |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
0
|
|
0
|
0
|
| Financial assets at amortised cost |
0
|
|
0
|
0
|
| Debt securities | Within 3 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
10,677
|
|
11,072
|
13,078
|
| Financial assets at amortised cost |
8,547
|
|
9,628
|
12,281
|
| Debt securities | 3 to 12 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
7,631
|
|
8,449
|
8,433
|
| Financial assets at amortised cost |
9,312
|
|
14,041
|
14,114
|
| Debt securities | 1 to 3 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
12,139
|
|
22,137
|
18,432
|
| Financial assets at amortised cost |
25,469
|
|
17,071
|
18,608
|
| Debt securities | 3 to 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
6,619
|
|
7,623
|
12,764
|
| Financial assets at amortised cost |
17,474
|
|
22,705
|
11,281
|
| Debt securities | More than 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
21,239
|
|
27,277
|
20,858
|
| Financial assets at amortised cost |
79,212
|
|
57,504
|
47,275
|
| Loans and advances |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
14,026
|
|
11,147
|
7,982
|
| Financial assets at amortised cost |
1,062,675
|
|
1,082,758
|
1,087,844
|
| Loans and advances | On demand |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
0
|
|
0
|
0
|
| Financial assets at amortised cost |
40,174
|
|
41,652
|
40,687
|
| Loans and advances | Within 3 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
2,044
|
|
2,329
|
466
|
| Financial assets at amortised cost |
204,562
|
|
198,937
|
189,785
|
| Loans and advances | 3 to 12 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
962
|
|
704
|
801
|
| Financial assets at amortised cost |
164,088
|
|
153,933
|
157,380
|
| Loans and advances | 1 to 3 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
1,873
|
|
1,765
|
940
|
| Financial assets at amortised cost |
183,274
|
|
203,800
|
213,582
|
| Loans and advances | 3 to 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
1,696
|
|
1,282
|
1,398
|
| Financial assets at amortised cost |
145,900
|
|
154,005
|
147,275
|
| Loans and advances | More than 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
7,451
|
|
5,067
|
4,377
|
| Financial assets at amortised cost |
324,677
|
|
330,431
|
339,135
|
| Central banks |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at amortised cost |
15,986
|
|
16,179
|
20,082
|
| Central banks | On demand |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at amortised cost |
0
|
|
0
|
0
|
| Central banks | Within 3 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at amortised cost |
14,782
|
|
15,067
|
18,730
|
| Central banks | 3 to 12 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at amortised cost |
0
|
|
0
|
0
|
| Central banks | 1 to 3 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at amortised cost |
0
|
|
0
|
0
|
| Central banks | 3 to 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at amortised cost |
1,134
|
|
0
|
0
|
| Central banks | More than 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at amortised cost |
70
|
|
1,112
|
1,352
|
| Credit institutions |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
1,120
|
|
363
|
|
| Financial assets at amortised cost |
61,513
|
|
55,537
|
57,917
|
| Credit institutions | On demand |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
0
|
|
0
|
|
| Financial assets at amortised cost |
4,577
|
|
6,208
|
6,783
|
| Credit institutions | Within 3 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
0
|
|
36
|
|
| Financial assets at amortised cost |
26,620
|
|
23,550
|
26,671
|
| Credit institutions | 3 to 12 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
111
|
|
0
|
|
| Financial assets at amortised cost |
10,564
|
|
4,166
|
6,313
|
| Credit institutions | 1 to 3 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
3
|
|
98
|
|
| Financial assets at amortised cost |
5,594
|
|
5,760
|
7,151
|
| Credit institutions | 3 to 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
5
|
|
6
|
|
| Financial assets at amortised cost |
1,198
|
|
1,843
|
1,521
|
| Credit institutions | More than 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
1,001
|
|
223
|
|
| Financial assets at amortised cost |
12,960
|
|
14,010
|
9,478
|
| Customers |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
12,906
|
|
10,784
|
7,669
|
| Financial assets at amortised cost |
985,176
|
|
1,011,042
|
1,009,845
|
| Customers | On demand |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
0
|
|
0
|
0
|
| Financial assets at amortised cost |
35,597
|
|
35,444
|
33,904
|
| Customers | Within 3 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
2,044
|
|
2,293
|
466
|
| Financial assets at amortised cost |
163,160
|
|
160,320
|
144,384
|
| Customers | 3 to 12 months |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
851
|
|
704
|
801
|
| Financial assets at amortised cost |
153,524
|
|
149,767
|
151,067
|
| Customers | 1 to 3 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
1,870
|
|
1,667
|
940
|
| Financial assets at amortised cost |
177,680
|
|
198,040
|
206,431
|
| Customers | 3 to 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
1,691
|
|
1,276
|
1,085
|
| Financial assets at amortised cost |
143,568
|
|
152,162
|
145,754
|
| Customers | More than 5 years |
|
|
|
|
| Assets |
|
|
|
|
| Financial assets at fair value through other comprehensive income |
6,450
|
|
4,844
|
4,377
|
| Financial assets at amortised cost |
€ 311,647
|
|
€ 315,309
|
€ 328,305
|