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Post-employment Benefits (Details 10)
R$ in Thousands
Dec. 31, 2022
BRL (R$)
Increase By One Percent [Member]  
Sensitivity of long-term interest rate  
Impacts on the obligations of the pension R$ (826,777)
Impacts on the obligations of healthcare program (195,345)
Sensitivity of growth rate of the medical costs  
Impacts on the obligations of healthcare program  82,208
Impact on cost of service for the following financial year of healthcare program  392
Sensitivity of the service cost  
Impacts on the obligations of the pension  320
Impacts on the obligations of healthcare program  1,040
Decrease In One Percent [Member]  
Sensitivity of long-term interest rate  
Impacts on the obligations of the pension 823,400
Impacts on the obligations of healthcare program 185,544
Sensitivity of growth rate of the medical costs  
Impacts on the obligations of healthcare program  (80,982)
Impact on cost of service for the following financial year of healthcare program  (386)
Sensitivity of the service cost  
Impacts on the obligations of the pension  (313)
Impacts on the obligations of healthcare program  R$ (883)