v3.25.1
POST-EMPLOYMENT BENEFIT - Additional Information (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Health Plan      
Expected duration of contribution to Social Security (Instituto Nacional do Seguro Social), or "INSS" for entitled to defined benefit plan 20 years    
Expected uninterrupted service duration for entitled to defined benefit plan 15 years    
Sponsor contribution to defined contribution plans R$ 111 R$ 103 R$ 303
Weighted average duration of defined benefit obligation 8 years 10 months 24 days 8 years 10 months 24 days  
Change in methods for preparing the sensitivity analysis There have been no changes regarding biometric and demographic assumptions compared to previous years and the methods adopted in preparing the sensitivity analysis    
Post-employment benefit expense, defined contribution plans R$ 15,076 R$ 14,647  
Compagas      
Health Plan      
Weighted average duration of defined benefit obligation 20 years 4 months 24 days 27 years 6 months  
Defined benefit [member] | CLE [member]      
Health Plan      
Sponsor contribution to defined contribution plans R$ 16,252 R$ 13,199  
Expected Contributions To Defined Benefit Plan 16,328    
Health plan [member]      
Health Plan      
Sponsor contribution to defined contribution plans R$ 31,169 R$ 27,088  
Weighted average duration of defined benefit obligation 8 years 10 months 24 days 10 years 10 months 24 days  
Expected Contributions To Defined Benefit Plan R$ 46,643