Risk management (Details 4) - BRL (R$)
R$ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
| IfrsStatementLineItems [Line Items] |
|
|
| Cash/Applications/Debt Instruments |
R$ 185,883
|
R$ 221,750
|
| Loans and advances to customers |
10,961
|
6,195
|
| Derivatives |
373,714
|
455,792
|
| Others |
51,530
|
33,181
|
| Total |
622,088
|
716,918
|
| Funding in foreign currency |
194,447
|
183,193
|
| Derivatives |
283,912
|
422,756
|
| Others |
147,839
|
119,948
|
| Total |
626,198
|
725,897
|
| Currency Risk Dollar [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Cash/Applications/Debt Instruments |
175,247
|
207,780
|
| Loans and advances to customers |
3,866
|
5,629
|
| Derivatives |
349,167
|
421,574
|
| Others |
51,530
|
33,181
|
| Total |
579,810
|
668,164
|
| Funding in foreign currency |
181,855
|
172,082
|
| Derivatives |
256,286
|
384,550
|
| Others |
145,446
|
116,669
|
| Total |
583,587
|
673,301
|
| Currency Risk Euro [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Cash/Applications/Debt Instruments |
7,950
|
10,523
|
| Loans and advances to customers |
5,610
|
1
|
| Derivatives |
15,713
|
19,908
|
| Others |
|
|
| Total |
29,273
|
30,432
|
| Funding in foreign currency |
8,881
|
8,333
|
| Derivatives |
20,376
|
25,804
|
| Others |
496
|
501
|
| Total |
29,753
|
34,638
|
| Currency Risk Others [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Cash/Applications/Debt Instruments |
2,686
|
3,447
|
| Loans and advances to customers |
1,485
|
565
|
| Derivatives |
8,834
|
14,310
|
| Others |
|
|
| Total |
13,005
|
18,322
|
| Funding in foreign currency |
3,711
|
2,778
|
| Derivatives |
7,250
|
12,402
|
| Others |
1,897
|
2,778
|
| Total |
R$ 12,858
|
R$ 17,958
|