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Commitments - Additional Information (Detail)
m³ in Thousands, R$ in Thousands, $ in Millions
Apr. 05, 2019
BRL (R$)
m³
Mar. 22, 2019
BRL (R$)
m³
Dec. 31, 2019
BRL (R$)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
BRL (R$)
Disclosure of commitments and contingencies [line items]          
Investments | R$     R$ 181,619   R$ 129,087
Area port lease [member] | IPP [member]          
Disclosure of commitments and contingencies [line items]          
Percentage of consortium owned 50.00%        
Investments | R$   R$ 160,000      
Term of concession   25 years      
Port concessions description   These concessions were carried out by two consortiums of which IPP holds one third of the total participation.      
Number of periods that Port areas will be operated 15 years        
Area port lease [member] | IPP [member] | Area BEL02A [member]          
Disclosure of commitments and contingencies [line items]          
Minimum port storage capacity 41        
Area port lease [member] | IPP [member] | Area BEL04A [member]          
Disclosure of commitments and contingencies [line items]          
Minimum port storage capacity 23        
Area port lease [member] | IPP [member] | Paraiba [member] | Port of Cabedelo [member]          
Disclosure of commitments and contingencies [line items]          
Minimum port storage capacity   64      
Area port lease [member] | IPP [member] | Espirito Santo [member] | Port of Vitoria [member]          
Disclosure of commitments and contingencies [line items]          
Minimum port storage capacity   66      
Area port lease [member] | Ultracargo [member]          
Disclosure of commitments and contingencies [line items]          
Number of periods that Port areas will be operated 25 years        
Area port lease [member] | Ultracargo [member] | Area VDC12 [member]          
Disclosure of commitments and contingencies [line items]          
Minimum port storage capacity 59        
Area port lease [member] | IPP and Ultracargo [member]          
Disclosure of commitments and contingencies [line items]          
Estimated investments to port concessions | R$ R$ 450,000        
Aratu [member]          
Disclosure of commitments and contingencies [line items]          
Cargo rates per ton     8.37 8.37  
Suape [member]          
Disclosure of commitments and contingencies [line items]          
Cargo rates per ton     2.54 2.54  
Third parties [member]          
Disclosure of commitments and contingencies [line items]          
Liability insurance policies     R$ 1,612,000 $ 400  
directors and executive officers (D&O) [member]          
Disclosure of commitments and contingencies [line items]          
Liability insurance policies     R$ 322,000 $ 80