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Employee benefits and private pension plan - Changes in provision for post-employment benefits (Detail) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Employee benefits and private pension plan      
Provision for post-employment benefits, opening R$ 264,823 R$ 215,556 R$ 215,719
Expense for the year 27,077 17,521 20,944
Update/change of benefit (10,094) 0 494
Actuarial (gains) losses from changes in actuarial assumptions (41,727) 52,099 (2,589)
Benefits paid directly by the Company and its subsidiaries (17,203) (20,353) (19,012)
Provision for post-employment benefits, ending R$ 222,876 R$ 264,823 R$ 215,556