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Financial Assets and Liabilities - Summary of Receivables from and Payables to Related Parties (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | R$ 98,280 |  | R$ 680,049
Receivables from related parties, non-current |  | 318,211 |  | 249,641
Total assets |  | 416,491 |  | 929,690
Payables to related parties |  | 287,609 |  | 307,080
Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 92,280 |  | 680,049
Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current |  | 318,211 |  | 249,641
Corporate operation agreements [member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Payables to related parties |  | 227,738 |  | 302,246
Corporate operation agreements [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 71,802 |  | 103,092
Corporate operation agreements [member] | Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current |  | 112,018 |  | 94,466
Corporate operation agreements [member] | Raizen Energia S.A. [member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Payables to related parties | [1] | 50,289 |  | 146,722
Corporate operation agreements [member] | Raizen Energia S.A. [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current | [1] | 38,710 |  | 73,913
Corporate operation agreements [member] | Termag Terminal Maritimo De Guaruja SA [Member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 14,286 |  |
Corporate operation agreements [member] | Termag Terminal Maritimo De Guaruja SA [Member] | Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current |  | 64,286 |  |
Corporate operation agreements [member] | Aguassanta Participacoes S.A. [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 2,956 |  | 837
Corporate operation agreements [member] | Raizen [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Payables to related parties | [1] | 171,084 |  | 154,366
Corporate operation agreements [member] | Raizen [Member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current | [1] | 15,489 |  | 11,171
Corporate operation agreements [member] | Raizen [Member] | Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current | [1] | 47,732 |  | 45,895
Corporate operation agreements [member] | Other [member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Payables to related parties |  | 6,365 |  | 1,158
Corporate operation agreements [member] | Other [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 361 |  | 17,171
Corporate operation agreements [member] | Other [member] | Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current |  |  |  | 48,571
Preferred shares [member] | Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current |  | 206,193 |  | 155,175
Preferred shares [member] | Raizen Energia S.A. [member] | Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current | [1] | 205,958 |  | 155,175
Preferred shares [member] | Other [member] | Non-current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, non-current |  | 235 |  |
Financial operations [member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Payables to related parties |  | 59,871 |  | 4,834
Financial operations [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 26,478 |  | 576,957
Financial operations [member] | Raizen Energia S.A. [member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Payables to related parties | [1] | 47,912 |  | 4,834
Financial operations [member] | Raizen Energia S.A. [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 8,933 | [1] |
Financial operations [member] | Aguassanta Participacoes S.A. [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current | [2] |  |  | 576,957
Financial operations [member] | Raizen [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Payables to related parties | [1] | 11,959 |  |
Financial operations [member] | Raizen [Member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | 45 | [1] |
Financial operations [member] | Rio Minas Mineração S.A. [member] | Current Asset [Member] |  |  |  |
Disclosure of receivables and payables [line items] |  |  |  |
Receivables from related parties, current |  | R$ 17,500 |  |
[1] | Current and non-current assets receivable from Raízen Energia and Raízen S.A. are, primarily, tax credits which will be reimbursed to the Company when realized. The preferred shares are used to Raízen reimburse Cosan, with preferential dividends, when the net operating loss is consumed in Raízen. Current liabilities represent reimburse to Raízen Energia and Raízen S.A. related to expenses regarding legal disputes and other liabilities, generated before the formation of joint ventures, which are responsibility of Cosan S.A.
[2] | On December 11, 2020, the Company disposed of 13,021,744 shares that were held in treasury to Aguassanta Investimentos S.A. (“Aguassanta”) paid on January 8, 2021.

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