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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, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Summary of trade receivables [line items]        
Allowance for expected credit losses R$ 173,287 R$ 185,278    
Reseller Financing - Ipiranga [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 173,287 185,278 R$ 197,011 R$ 156,006
Reseller Financing - Ipiranga [member] | Current [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 1,327 1,514    
Reseller Financing - Ipiranga [member] | Less than 30 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 483 6,410    
Reseller Financing - Ipiranga [member] | 31 to 60 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 1,132 8,697    
Reseller Financing - Ipiranga [member] | 61-90 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 3,704 6,255    
Reseller Financing - Ipiranga [member] | 91-180 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses 4,937 9,892    
Reseller Financing - Ipiranga [member] | More than 180 days [member]        
Summary of trade receivables [line items]        
Allowance for expected credit losses R$ 161,704 R$ 152,510