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Intangible Assets - Additional Information (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about intangible assets [line items]      
Period of evaluation 5 years    
Provision for decarbonization credit R$ 741,982 R$ 272,969  
Software [member]      
Disclosure of detailed information about intangible assets [line items]      
Software in progress R$ 11,200 R$ 18,673 R$ 27,672
Bottom of range [member]      
Disclosure of detailed information about intangible assets [line items]      
Nominal discount rate 10.10%    
Real growth rate 0.00%    
Top of range [member]      
Disclosure of detailed information about intangible assets [line items]      
Nominal discount rate 11.10%    
Real growth rate 0.50%