XML 109 R87.htm IDEA: XBRL DOCUMENT
v3.22.1

Financial Assets and Liabilities - Loans, borrowings and debentures - Additional information (Detail) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about borrowings [line items] |  |  |
Period of lease term of short-term leases | 12 months |  |
Lease liabilities | R$ 3,267,678 | R$ 3,001,847 | R$ 4,594,888
Weighted average |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Annual interest | 5.32% |  |
Bottom of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Lessee’s incremental borrowing rate applied to the lease liabilities | 10.90% | 10.90% |
Hedged risk position percentage | 60.00% |  |
Top of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Lessee’s incremental borrowing rate applied to the lease liabilities | 14.20% | 14.20% |
Hedged risk position percentage | 140.00% |  |
CDI | Weighted average |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Annual interest | 9.15% |  |
Secured | BNDES |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Balance of bank guarantees contracted | R$ 3,328,076 | R$ 3,687,323 |
Secured | BNDES | Weighted average |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Bank guarantee rate | 1.04% |  |
Secured | European investment bank |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Balance of bank guarantees contracted | R$ 79,020 | R$ 133,000 |

X
- Definition Balance of bank guarantees contracted. + References No definition available. + Details
Name: | csan_BalanceOfBankGuaranteesContracted
Namespace Prefix: | csan_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Guarantee fee rate. + References No definition available. + Details
Name: | csan_GuaranteeFeeRate
Namespace Prefix: | csan_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Hedged risk positon percentage. + References No definition available. + Details
Name: | csan_HedgedRiskPositonPercentage
Namespace Prefix: | csan_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The period of lease term of short-term leases upon lease contract. + References No definition available. + Details
Name: | csan_PeriodOfLeaseTermOfShortTermLeases
Namespace Prefix: | csan_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_BorrowingsInterestRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph C12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C -URIDate 2021-03-24 + Details
Name: | ifrs-full_WeightedAverageLesseesIncrementalBorrowingRateAppliedToLeaseLiabilitiesRecognisedAtDateOfInitialApplicationOfIFRS16
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfInterestRatesAxis=csan_CDIIndexMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfFinancialLiabilitiesAxis=csan_SecuredBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=csan_BrazilianNationalEconomicandSocialDevelopmentBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=csan_EuropeanInvestmentBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |