Fair value of financial assets and liabilities (Details 2) - BRL (R$)
R$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
| Level 1 of fair value hierarchy [member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Open market investments |
R$ 20,232,729
|
R$ 37,084,254
|
| Debt instruments |
53,703,410
|
34,616,776
|
| Total |
73,936,139
|
71,701,030
|
| Level 2 of fair value hierarchy [member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Loans and amounts due from credit institutions |
20,311,427
|
6,757,021
|
| Debt instruments |
2,426
|
|
| Balances with The Brazilian Central Bank |
91,754,315
|
92,439,824
|
| Total |
112,068,168
|
99,196,845
|
| Level 3 of fair value hierarchy [member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Loans and amounts due from credit institutions |
15,636,496
|
23,420,606
|
| Loans and advances to customers |
558,401,338
|
554,791,402
|
| Debt instruments |
61,097,847
|
49,763,731
|
| Total |
635,135,681
|
627,975,739
|
| Carrying amount [member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Open market investments |
20,232,729
|
37,084,254
|
| Loans and amounts due from credit institutions |
35,947,923
|
30,177,627
|
| Loans and advances to customers |
558,134,969
|
561,178,111
|
| Debt instruments |
114,708,615
|
84,529,222
|
| Balances with The Brazilian Central Bank |
91,754,315
|
92,439,824
|
| Total |
820,778,551
|
805,409,038
|
| Fair Value [Member] |
|
|
| IfrsStatementLineItems [Line Items] |
|
|
| Open market investments |
20,232,729
|
37,084,254
|
| Loans and amounts due from credit institutions |
35,947,923
|
30,177,627
|
| Loans and advances to customers |
558,401,338
|
554,791,402
|
| Debt instruments |
114,803,683
|
84,380,507
|
| Balances with The Brazilian Central Bank |
91,754,315
|
92,439,824
|
| Total |
R$ 821,139,988
|
R$ 798,873,614
|