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Inventories - Composition of Inventories (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Summary of inventories [line items]    
Cost R$ 3,887,189 R$ 3,756,284
Provision for losses (40,993) (40,724)
Net balance 3,846,196 3,715,560
Fuels [member]    
Summary of inventories [line items]    
Cost 1,682,841 1,843,257
Provision for losses (5,344) (2,073)
Net balance 1,677,497 1,841,184
Finished goods [member]    
Summary of inventories [line items]    
Cost 646,180 541,689
Provision for losses (22,281) (22,048)
Net balance 623,899 519,641
Work in process [member]    
Summary of inventories [line items]    
Cost 1,450 1,971
Provision for losses 0 0
Net balance 1,450 1,971
Raw Materials [member]    
Summary of inventories [line items]    
Cost 568,185 365,960
Provision for losses (1,827) (2,552)
Net balance 566,358 363,408
Liquified petroleum gas [member]    
Summary of inventories [line items]    
Cost 110,767 101,715
Provision for losses (5,761) (5,761)
Net balance 105,006 95,954
Consumable materials [member]    
Summary of inventories [line items]    
Cost 129,559 140,058
Provision for losses (2,598) (2,587)
Net balance 126,961 137,471
Pharmaceutical hygiene beauty products member    
Summary of inventories [line items]    
Cost 521,689 549,191
Provision for losses (2,611) (2,877)
Net balance 519,078 546,314
Advances to suppliers [member]    
Summary of inventories [line items]    
Cost [1] 198,986 183,170
Provision for losses [1] (464) (2,719)
Net balance [1] 198,522 180,451
Properties for resale [member]    
Summary of inventories [line items]    
Cost 27,532 29,273
Provision for losses (107) (107)
Net balance R$ 27,425 R$ 29,166
[1] Refers substantially to ethanol, biodiesel and advance of fuels.