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Trade receivables, reseller financing and other receivables - Breakdown of Expected Losses on Doubtful Accounts (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Summary of trade receivables [line items]        
Allowance for expected credit losses R$ 134,383 R$ 173,287    
Reseller Financing - Ipiranga [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 134,383 173,287 R$ 185,278 R$ 197,011
Reseller Financing - Ipiranga [member] | Current [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 8,265 1,327    
Reseller Financing - Ipiranga [member] | Less than 30 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 1,595 483    
Reseller Financing - Ipiranga [member] | 31 to 60 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 857 1,132    
Reseller Financing - Ipiranga [member] | 61-90 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 1,795 3,704    
Reseller Financing - Ipiranga [member] | 91-180 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 4,521 4,937    
Reseller Financing - Ipiranga [member] | More than 180 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses R$ 117,350 R$ 161,704