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Financial Assets and Liabilities - Summary of balance of other financial assets (Detail) - BRL (R$) R$ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Apr. 15, 2021 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of financial assets [line items] |  |  |  |  |
Current |  |  | R$ 466 | R$ 69,126 |
Non-current |  |  | 319,727 |  |
Other financial assets |  |  | 320,193 | 69,126 |
Receipt of consideration asset | R$ 69,155 | R$ 65,478 | R$ 69,155 | 65,478 | R$ 1,192
Tellus and Janus shares [member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Percentage of preferred shares in the entity held by the entity or by its subsidiaries or associates |  |  | 5.00% |  |
Percentage of proposed dividend Company and the other shareholders are entitled to receive |  |  | 90.00% |  |
Fair value through profit or loss [member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Current |  |  | R$ 466 | 69,126 |
Non-current |  |  | 319,727 |  |
Other financial assets |  |  | 320,193 | 69,126 |
Fair value through profit or loss [member] | Tellus and Janus shares [member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Other financial assets |  |  | 319,727 |  |
Fair value through profit or loss [member] | Other financial assets [member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Other financial assets |  |  | R$ 466 | R$ 69,126 |

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