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Concessions payable- Summary of Concessions Payable (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | R$ 3,054,248 | R$ 2,983,342
Current | 160,771 | 158,705
Non-current | 2,893,477 | 2,824,637
Court Discussion [member] |  |
Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | 1,802,403 | 1,719,635
Court Discussion [member] | Rumo Malha Paulista S.A. [member] |  |
Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | 55,170 | 101,871
Court Discussion [member] | Rumo Malha Oeste S.A. [member] |  |
Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | 1,747,233 | 1,617,764
Railroad concession payable under litigation | Rumo Malha Paulista S.A. [member] |  |
Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | 1,145,450 | 1,154,919
Payables |  |
Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | 106,395 | 108,788
Payables | Rumo Malha Paulista S.A. [member] |  |
Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | 20,682 | 24,151
Payables | Rumo Malha Sul S.A. [member] |  |
Disclosure of Concessions Payable And Judicial Deposits [line items] |  |
Concessions payable | R$ 85,713 | R$ 84,637

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