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Property, plant and equipment, intangible assets, goodwill, right-of-use assets and contract assets - Schedule of Property Plant and Equipment (Parenthetical) (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Wagons and locomotives [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Bank loan guarantee R$ 745,203 R$ 745,203