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Employee benefits and private pension plan - Post-employment Benefits (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of defined benefit plans [line items]        
Total R$ 222,876 R$ 264,823 R$ 215,556 R$ 215,719
Current 24,098 23,612    
Non-current 198,778 241,211    
Health and dental care plan [member]        
Disclosure of defined benefit plans [line items]        
Total [1] 177,958 211,279    
Indemnification of FGTS [member]        
Disclosure of defined benefit plans [line items]        
Total 32,420 38,456    
Seniority bonus [member]        
Disclosure of defined benefit plans [line items]        
Total 1,795 2,026    
Life insurance [member]        
Disclosure of defined benefit plans [line items]        
Total [2] R$ 10,703 R$ 13,062    
[1] Applicable to Ipiranga, Tropical (merged by Ipiranga) and Iconic.
[2] Applicable to Ipiranga, Tropical (merged by Ipiranga), Ultragaz and Ultrapar.