v3.25.1
POST-EMPLOYMENT BENEFIT - Summary of Defined Benefit Obligation and Fair Value of Plan Assets (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of net defined benefit liability (asset) [line items]      
Current service cost R$ 386 R$ 157 R$ 219
Interest income (58,879) (57,337) (56,119)
Actuarial (gain) loss arising from financial assumptions 168,351 (62,807) 88,709
Actuarial loss (gain) arising from experience adjustment (23,575) 62,889 (14,319)
Actuarial gains arising from demographic assumptions (22,116)
Employer contributions (111) (103) (303)
Net defined benefit liability 526,322 617,314 575,508
Present value of defined benefit obligation [member]      
Disclosure of net defined benefit liability (asset) [line items]      
Beginning balance 1,141,841 1,097,982 1,161,693
Current service cost 386 157 219
Business combination 9,560 319
Interest income 105,302 107,057 98,343
Early settlement in the plan (3,081)
Actuarial (gain) loss arising from financial assumptions (170,791) 62,807 (88,709)
Actuarial loss (gain) arising from experience adjustment 23,181 (62,889) 14,319
Actuarial gains arising from demographic assumptions 505 22,116
Benefit payments (91,684) (85,389) (85,121)
Ending balance 1,018,300 1,141,841 1,097,982
Plan assets [member]      
Disclosure of net defined benefit liability (asset) [line items]      
Beginning balance (524,527) (522,474) (492,408)
Interest income (46,423) (49,720) (42,224)
Early settlement in the plan 3,698
Return on investments in the year (excluding interest income) 34,709 2,443 11,405
Employer contributions (43,340) (40,278) (87,945)
Benefit payments 87,603 85,502 85,000
Ending balance R$ (491,978) R$ (524,527) R$ (522,474)