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SUPPLEMENTARY PENSION PLANS (Details 1) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
(iv) Financed position:    
Remeasurement effects recognized in Other Comprehensive Income R$ 87,297 R$ 80,361
Retirement Benefits [Member]    
(i) Projected benefit obligations:    
At the beginning of the year 2,794,954 2,740,903
Cost of current service 1,179 284
Interest cost 249,162 252,694
Participant’s contribution 465 473
Actuarial gain/(loss) (1) (218,019) 69,201
Transfers (278) 16,460
Past service cost - plan changes (3,814)
Early elimination of obligations (1,284) (12,647)
Benefit paid (269,280) (268,600)
At the end of the year 2,556,899 2,794,954
(ii) Plan assets at fair value:    
At the beginning of the year 2,402,006 2,467,755
Expected earnings 214,092 227,227
Actuarial gain/(loss) (1) (125,943) (56,554)
Contributions received:    
- Employer 195,343 31,526
- Employees 465 473
Transfers (134) 16,460
Early elimination of obligations (16,460)
Benefit paid (269,281) (268,421)
At the end of the year 2,416,548 2,402,006
(iii) Changes in the unrecoverable surplus:    
At the beginning of the year 57,939 60,861
Interest on the irrecoverable surplus 5,471 5,644
Change in irrecoverable surplus (1) (1,200) (8,566)
At the end of the year 62,210 57,939
(iv) Financed position:    
Deficit plans (2) 202,561 450,887
Net balance 202,561 450,887
Other Post Employment Benefits [Member]    
(i) Projected benefit obligations:    
At the beginning of the year 857,347 800,535
Cost of current service
Interest cost 78,223 75,344
Participant’s contribution
Actuarial gain/(loss) (1) (65,504) 28,890
Transfers
Past service cost - plan changes
Early elimination of obligations
Benefit paid (50,341) (47,422)
At the end of the year 819,725 857,347
(ii) Plan assets at fair value:    
At the beginning of the year
Expected earnings
Actuarial gain/(loss) (1)
Contributions received:    
- Employer
- Employees
Transfers
Early elimination of obligations
Benefit paid
At the end of the year
(iii) Changes in the unrecoverable surplus:    
At the beginning of the year
Interest on the irrecoverable surplus
Change in irrecoverable surplus (1)
At the end of the year
(iv) Financed position:    
Deficit plans (2) 819,725 857,347
Net balance R$ 819,725 R$ 857,347