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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
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.