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Financial Assets and Liabilities - Schedule Required to Comply Financial Covenants (Detail) | 12 Months Ended
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Dec. 31, 2021
Debentures 1St Issue [Member] | Cosan SA [member] |
Disclosure of detailed information about borrowings [line items] |
Ratios | 2.26%
Debentures 1St Issue [Member] | Cosan Logistica [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Net debt/EBITDA cannot exceed 4.00
Resolution 4131 | Comgas [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Net debt/EBITDA cannot exceed 4.00
Ratios | 1.59%
Brazilian National Economic and Social Development Bank [Member] | Comgas [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Net debt/EBITDA cannot exceed 4.00
Ratios | 1.59%
Brazilian National Economic and Social Development Bank [Member] | Rumo S.A. [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | EBITDA/Consolidated financial result not higher than or equal to 2.0
Ratios | 4.91%
Debentures 5Th To 8Th Issues [Member] | Comgas [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Net debt/EBITDA cannot exceed 4.00
Ratios | 1.59%
Debentures fourth issue [member] | Comgas [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Short-term indebtedness/Total indebtedness cannot exceed 0.6
Ratios | 0.34%
Senior notes due 2027 | Cosan SA [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Net debt pro forma/EBITDA pro forma not higher than or equal to 3.5
Ratios | 2.11%
Senior notes due 2029 | Cosan SA [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Net debt pro forma/EBITDA pro forma not higher than or equal to 3.5
Ratios | 2.11%
Senior notes due 2025 | Rumo S.A. [member] |
Disclosure of detailed information about borrowings [line items] |
Triggers | Net debt/EBITDA not higher than or equal to 3.3
Ratios | 2.79%

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