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Employee Benefits and Private Pension Plan - Sensitivity analysis (Detail)
R$ in Thousands
Dec. 31, 2023
BRL (R$)
Discount rate [Member]  
Disclosure of defined benefit plans [line items]  
Change in assumptions 1.00%
Decrease in liability R$ 26,978
Change in assumptions 1.00%
Increase in liability R$ 33,577
Salary growth rate [member]  
Disclosure of defined benefit plans [line items]  
Change in assumptions 1.00%
Decrease in liability R$ 399
Change in assumptions 1.00%
Increase in liability R$ 432
Medical services growth rate [Member]  
Disclosure of defined benefit plans [line items]  
Change in assumptions 1.00%
Decrease in liability R$ 24,871
Change in assumptions 1.00%
Increase in liability R$ 30,738