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Employee Benefits and Private Pension Plan - Sensitivity analysis (Detail)
R$ in Thousands
Dec. 31, 2022
BRL (R$)
Discount rate [Member]  
Disclosure of defined benefit plans [line items]  
Change in assumptions 1.00%
Decrease in liability R$ 19,688
Change in assumptions 1.00%
Increase in liability R$ 24,252
Wage growth rate [member]  
Disclosure of defined benefit plans [line items]  
Change in assumptions 1.00%
Decrease in liability R$ 266
Change in assumptions 1.00%
Increase in liability R$ 477
Medical services growth rate [Member]  
Disclosure of defined benefit plans [line items]  
Change in assumptions 1.00%
Decrease in liability R$ 17,824
Change in assumptions 1.00%
Increase in liability R$ 21,847