Fair value - Schedule of Level 3 Recurring Fair Value Changes (Details) - BRL (R$)
R$ in Millions |
12 Months Ended |
Dec. 31, 2025 |
Dec. 31, 2024 |
| Disclosure of financial assets [line items] |
|
|
| Financial assets, beginning value |
R$ 666,128
|
|
| Financial assets, ending value |
745,742
|
R$ 666,128
|
| At fair value through other comprehensive income, beginning balance |
106,303
|
|
| At fair value through other comprehensive income, ending balance |
132,473
|
106,303
|
| Financial assets at fair value, beginning balance |
559,825
|
|
| Financial assets at fair value, ending balance |
613,269
|
559,825
|
| Derivatives assets, beginning balance |
92,439
|
|
| Derivatives assets, ending balance |
73,384
|
92,439
|
| Shares |
|
|
| Disclosure of financial assets [line items] |
|
|
| Financial assets at fair value, beginning balance |
25,880
|
|
| Financial assets at fair value, ending balance |
25,175
|
25,880
|
| Level 3 |
|
|
| Disclosure of financial assets [line items] |
|
|
| Financial assets, beginning value |
2,158
|
2,371
|
| Income |
200
|
298
|
| Other comprehensive income |
5
|
6
|
| Purchases |
64
|
1,713
|
| Settlements |
(1,640)
|
(957)
|
| Transfers in the hierarchy |
(64)
|
(1,273)
|
| Financial assets, ending value |
723
|
2,158
|
| Total gains or Losses (unrealized) |
(277)
|
(994)
|
| At fair value through other comprehensive income, beginning balance |
218
|
253
|
| Income |
46
|
12
|
| Purchases |
6
|
504
|
| Settlements |
(22)
|
(372)
|
| Transfers in the hierarchy |
1
|
(185)
|
| At fair value through other comprehensive income, ending balance |
254
|
218
|
| Total gains or losses (unrealized) |
(1)
|
|
| Financial assets at fair value, beginning balance |
1,940
|
2,118
|
| Income |
154
|
286
|
| Purchases |
58
|
1,209
|
| Settlements |
(1,618)
|
(585)
|
| Transfers in the hierarchy |
(65)
|
(1,088)
|
| Financial assets at fair value, ending balance |
469
|
1,940
|
| Total gains or losses (unrealized) |
(276)
|
(994)
|
| Derivatives assets, beginning balance |
372
|
262
|
| Derivatives - assets, Total gains or losses (realized / unrealized), Income |
134
|
176
|
| Derivatives assets, Purchases |
349
|
235
|
| Derivatives assets, Settlements |
(223)
|
(216)
|
| Derivatives assets, Transfers in and / or out of Level |
(251)
|
(85)
|
| Derivatives assets, ending balance |
381
|
372
|
| Derivatives assets, Total gains or losses (unrealized) |
(265)
|
270
|
| Derivatives liabilities, beginning balance |
(175)
|
(389)
|
| Derivatives - liabilities, Total gains or losses (realized / unrealized), Income |
(402)
|
(215)
|
| Derivatives - liabilities, Purchases |
(1,356)
|
(306)
|
| Derivatives - liabilities, Settlements |
430
|
239
|
| Derivatives - liabilities, Transfers in the hierarchy |
(79)
|
496
|
| Derivatives liabilities, ending balance |
(1,582)
|
(175)
|
| Derivatives liability, Total gains or losses (unrealized) |
390
|
13
|
| Level 3 | Forward |
|
|
| Disclosure of financial assets [line items] |
|
|
| Derivatives liabilities, beginning balance |
(15)
|
(16)
|
| Derivatives - liabilities, Total gains or losses (realized / unrealized), Income |
|
1
|
| Derivatives - liabilities, Purchases |
(15)
|
|
| Derivatives - liabilities, Settlements |
15
|
|
| Derivatives liabilities, ending balance |
(15)
|
(15)
|
| Level 3 | Options |
|
|
| Disclosure of financial assets [line items] |
|
|
| Derivatives liabilities, beginning balance |
(8)
|
(1)
|
| Derivatives - liabilities, Total gains or losses (realized / unrealized), Income |
(19)
|
17
|
| Derivatives - liabilities, Purchases |
(75)
|
(54)
|
| Derivatives - liabilities, Settlements |
79
|
23
|
| Derivatives - liabilities, Transfers in the hierarchy |
1
|
7
|
| Derivatives liabilities, ending balance |
(22)
|
(8)
|
| Derivatives liability, Total gains or losses (unrealized) |
(6)
|
7
|
| Level 3 | Swaps |
|
|
| Disclosure of financial assets [line items] |
|
|
| Derivatives liabilities, beginning balance |
(152)
|
(372)
|
| Derivatives - liabilities, Total gains or losses (realized / unrealized), Income |
(383)
|
(233)
|
| Derivatives - liabilities, Purchases |
(1,266)
|
(252)
|
| Derivatives - liabilities, Settlements |
336
|
216
|
| Derivatives - liabilities, Transfers in the hierarchy |
(80)
|
489
|
| Derivatives liabilities, ending balance |
(1,545)
|
(152)
|
| Derivatives liability, Total gains or losses (unrealized) |
396
|
6
|
| Level 3 | Forward |
|
|
| Disclosure of financial assets [line items] |
|
|
| Derivatives assets, beginning balance |
18
|
19
|
| Derivatives - assets, Total gains or losses (realized / unrealized), Income |
(2)
|
(1)
|
| Derivatives assets, Purchases |
1
|
|
| Derivatives assets, Settlements |
0
|
|
| Derivatives assets, ending balance |
17
|
18
|
| Level 3 | Options |
|
|
| Disclosure of financial assets [line items] |
|
|
| Derivatives assets, beginning balance |
31
|
6
|
| Derivatives - assets, Total gains or losses (realized / unrealized), Income |
(7)
|
13
|
| Derivatives assets, Purchases |
108
|
67
|
| Derivatives assets, Settlements |
(113)
|
(47)
|
| Derivatives assets, Transfers in and / or out of Level |
|
(8)
|
| Derivatives assets, ending balance |
19
|
31
|
| Derivatives assets, Total gains or losses (unrealized) |
(37)
|
(2)
|
| Level 3 | Swaps |
|
|
| Disclosure of financial assets [line items] |
|
|
| Derivatives assets, beginning balance |
322
|
236
|
| Derivatives - assets, Total gains or losses (realized / unrealized), Income |
143
|
164
|
| Derivatives assets, Purchases |
240
|
168
|
| Derivatives assets, Settlements |
(109)
|
(169)
|
| Derivatives assets, Transfers in and / or out of Level |
(251)
|
(77)
|
| Derivatives assets, ending balance |
345
|
322
|
| Derivatives assets, Total gains or losses (unrealized) |
(228)
|
271
|
| Level 3 | Credit derivatives |
|
|
| Disclosure of financial assets [line items] |
|
|
| Derivatives assets, beginning balance |
1
|
1
|
| Derivatives assets, Settlements |
(1)
|
|
| Derivatives assets, ending balance |
|
1
|
| Derivatives assets, Total gains or losses (unrealized) |
|
1
|
| Level 3 | Corporate securities |
|
|
| Disclosure of financial assets [line items] |
|
|
| Other comprehensive income |
5
|
6
|
| At fair value through other comprehensive income, beginning balance |
218
|
60
|
| Income |
46
|
12
|
| Purchases |
6
|
504
|
| Settlements |
(22)
|
(179)
|
| Transfers in the hierarchy |
(1)
|
(185)
|
| At fair value through other comprehensive income, ending balance |
252
|
218
|
| Total gains or losses (unrealized) |
(1)
|
|
| Financial assets at fair value, beginning balance |
1,834
|
2,047
|
| Income |
198
|
250
|
| Purchases |
16
|
1,206
|
| Settlements |
(1,618)
|
(581)
|
| Transfers in the hierarchy |
(65)
|
(1,088)
|
| Financial assets at fair value, ending balance |
365
|
1,834
|
| Total gains or losses (unrealized) |
(120)
|
(896)
|
| Level 3 | Corporate securities | Debentures |
|
|
| Disclosure of financial assets [line items] |
|
|
| Other comprehensive income |
5
|
(1)
|
| At fair value through other comprehensive income, beginning balance |
218
|
|
| Income |
46
|
7
|
| Purchases |
0
|
216
|
| Settlements |
(16)
|
(144)
|
| Transfers in the hierarchy |
(1)
|
140
|
| At fair value through other comprehensive income, ending balance |
252
|
218
|
| Total gains or losses (unrealized) |
(1)
|
|
| Financial assets at fair value, beginning balance |
1,734
|
1,895
|
| Income |
190
|
306
|
| Purchases |
3
|
950
|
| Settlements |
(1,606)
|
(259)
|
| Transfers in the hierarchy |
(43)
|
(1,158)
|
| Financial assets at fair value, ending balance |
278
|
1,734
|
| Total gains or losses (unrealized) |
(45)
|
(818)
|
| Level 3 | Corporate securities | Financial bills |
|
|
| Disclosure of financial assets [line items] |
|
|
| Purchases |
6
|
|
| Settlements |
(6)
|
|
| Financial assets at fair value, beginning balance |
|
4
|
| Settlements |
|
(4)
|
| Transfers in the hierarchy |
2
|
|
| Financial assets at fair value, ending balance |
2
|
|
| Level 3 | Corporate securities | Eurobonds and other |
|
|
| Disclosure of financial assets [line items] |
|
|
| Other comprehensive income |
|
7
|
| At fair value through other comprehensive income, beginning balance |
|
60
|
| Income |
|
5
|
| Purchases |
|
288
|
| Settlements |
|
(35)
|
| Transfers in the hierarchy |
|
(325)
|
| Financial assets at fair value, beginning balance |
|
5
|
| Income |
|
(41)
|
| Purchases |
12
|
132
|
| Settlements |
(12)
|
(87)
|
| Transfers in the hierarchy |
|
(9)
|
| Level 3 | Corporate securities | Real estate receivables certificates |
|
|
| Disclosure of financial assets [line items] |
|
|
| Financial assets at fair value, beginning balance |
100
|
126
|
| Income |
8
|
(27)
|
| Purchases |
1
|
83
|
| Settlements |
|
(95)
|
| Transfers in the hierarchy |
(26)
|
13
|
| Financial assets at fair value, ending balance |
83
|
100
|
| Total gains or losses (unrealized) |
(75)
|
(78)
|
| Level 3 | Corporate securities | Promissory notes |
|
|
| Disclosure of financial assets [line items] |
|
|
| Financial assets at fair value, beginning balance |
|
17
|
| Transfers in the hierarchy |
|
(17)
|
| Level 3 | Corporate securities | Other |
|
|
| Disclosure of financial assets [line items] |
|
|
| Income |
|
12
|
| Purchases |
|
41
|
| Settlements |
|
(136)
|
| Transfers in the hierarchy |
2
|
83
|
| Financial assets at fair value, ending balance |
2
|
|
| Level 3 | Shares |
|
|
| Disclosure of financial assets [line items] |
|
|
| At fair value through other comprehensive income, beginning balance |
|
193
|
| Settlements |
|
(193)
|
| Transfers in the hierarchy |
2
|
|
| At fair value through other comprehensive income, ending balance |
2
|
|
| Financial assets at fair value, beginning balance |
106
|
71
|
| Income |
(44)
|
36
|
| Purchases |
42
|
3
|
| Settlements |
0
|
(4)
|
| Transfers in the hierarchy |
0
|
|
| Financial assets at fair value, ending balance |
104
|
106
|
| Total gains or losses (unrealized) |
R$ (156)
|
R$ (98)
|