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Financial Assets and Liabilities - Summary of Loans, Borrowings and Debentures (Parentheticals) (Details) - Rumo S.A. [member] - Unsecured - U.S. Dollar | Fixed R$ in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Jan. 18, 2022 BRL (R$) | Jan. 18, 2022 USD ($) | Sep. 22, 2021 BRL (R$) | Jul. 10, 2020 BRL (R$)
Senior notes due 2025 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Annual interest |  |  | 5.875% | 5.875% |  |
Aggregate principal amount |  |  | R$ 2,780,500 | $ 500,000 |  |
Senior notes due 2028 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Annual interest |  |  |  |  |  | 5.25%
Aggregate principal amount |  |  |  |  |  | R$ 500,000
Senior Notes Due 2032 [Member] |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Annual interest |  |  |  |  | 4.20% |
Aggregate principal amount |  |  |  |  | R$ 500,000 |
Rate of greenhouse gas emissions reduction per ton of useful kilometer |  | 14.34 |  |  |  |
Description of estimated interest rate increase for non-compliance for fulfilment of environment goals | <span style="border-left: none; border-right: none;">25</span> basis points |  |  |  |  |
Estimated interest rate increase for non-compliance for fulfilment of environment goals | 4.45% |  |  |  |  |
Senior Notes Due 2032 [Member] | 2026 [member] |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Target rate of greenhouse gas emissions reduction per ton of useful kilometer | 11.82 |  |  |  |  |

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