Obligations for pension and similar liabilities (Details 1) - BRL (R$)
R$ in Thousands |
12 Months Ended |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
| IfrsStatementLineItems [Line Items] |
|
|
|
| Post Employment Plans, Beginning balance |
R$ 22,996,370
|
R$ 26,241,550
|
R$ 24,106,720
|
| Other Similar Obligations, Beginning balance |
4,689,396
|
5,130,333
|
4,588,664
|
| Post Employment Plans, Costs of current services |
255
|
586
|
(911)
|
| Other Similar Obligations, Cost of current services |
5,586
|
5,694
|
4,903
|
| Post Employment Plans, Interest cost |
2,322,447
|
2,247,577
|
2,188,015
|
| Other Similar Obligations, Interest cost |
486,529
|
438,944
|
429,103
|
| Post Employment Plans, Paid benefits |
(2,822,774)
|
(4,721,231)
|
(2,487,932)
|
| Other Similar Obligations, Paid benefits |
(547,991)
|
(489,818)
|
(448,912)
|
| Post Employment Plans, Actuarial losses (gains) |
546,209
|
(1,040,157)
|
2,433,313
|
| Other Similar Obligations, Actuarial losses (gains) |
841,514
|
(395,757)
|
556,575
|
| Post Employment Plans, Others |
2,510
|
268,045
|
2,345
|
| Other Similar Obligations, Others |
(137)
|
|
|
| Post Employment Plans, Ending balance |
23,045,017
|
22,996,370
|
26,241,550
|
| Other Similar Obligations, Ending balance |
5,474,897
|
4,689,396
|
5,130,333
|
| Post Employment Plans, Fair value of plan assets |
25,289,715
|
26,158,640
|
27,328,362
|
| Other Similar Obligations, Fair value of plan assets |
5,253,707
|
5,008,751
|
5,570,354
|
| Post Employment Plans, Unrecognized assets |
(2,624,294)
|
(3,617,497)
|
(2,649,505)
|
| Other Similar Obligations, Unrecognized assets |
(368,511)
|
(877,078)
|
(1,082,010)
|
| Post Employment Plans, Provisions net |
379,596
|
455,227
|
1,562,693
|
| Other Similar Obligations, Provisions net |
589,701
|
557,723
|
641,989
|
| Total provisions for pension plans, net |
969,317
|
1,023,424
|
2,204,684
|
| Actuarial provisions |
1,357,203
|
1,364,437
|
2,543,504
|
| Actuarial assets |
387,886
|
341,013
|
338,820
|
| Post Employment Plans, Plan Experience |
(670,274)
|
(2,343,241)
|
(585,676)
|
| Other Similar Obligations, Plan Experience |
(738,349)
|
(416,984)
|
(171,107)
|
| Post Employment Plans, Changes in Financial Assumptions |
123,950
|
3,347,376
|
(1,652,752)
|
| Other Similar Obligations, Changes in Financial Assumptions |
11,000
|
770,940
|
(419,306)
|
| Post Employment Plans, Changes in Demographic Assumptions |
|
|
(178,125)
|
| Other Similar Obligations, Changes in Demographic Assumptions |
(114,165)
|
41,519
|
33,838
|
| Post Employment Plans, Actuarial Gain (Loss) - Obligation |
(546,324)
|
1,004,135
|
(2,416,553)
|
| Other Similar Obligations, Actuarial Gain (Loss) - Obligation |
(841,514)
|
395,475
|
(556,575)
|
| Post Employment Plans, Return on Investments Different from the Return Implicit in the Discount Rate |
(1,338,033)
|
(1,183,609)
|
(127,052)
|
| Other Similar Obligations, Return on Investments Different from the Return Implicit in the Discount Rate |
37,908
|
(771,685)
|
387,599
|
| Post Employment Plans, Gain (Loss) Actuarial - Asset |
(1,338,033)
|
(1,183,609)
|
(127,052)
|
| Post Employment Plans, Changes in Surplus Irrecoverable Deficit |
1,356,862
|
(704,716)
|
1,801,693
|
| Other Similar Obligations, Changes in Surplus Irrecoverable Deficit |
598,347
|
304,272
|
(89,852)
|
| Post Employment Plans [Member] |
|
|
|
| IfrsStatementLineItems [Line Items] |
|
|
|
| Experience in Net Assets Adjustments |
(1,338,149)
|
(1,200,878)
|
(99,752)
|
| Other Similar Obligations [Member] |
|
|
|
| IfrsStatementLineItems [Line Items] |
|
|
|
| Experience in Net Assets Adjustments |
R$ 37,761
|
R$ (772,305)
|
R$ 387,599
|