XML 134 R112.htm IDEA: XBRL DOCUMENT
v3.22.1

Other Tax Receivables - Additional Information (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Trade and Other Current Receivables [line items] |  |  |
Receivables from taxes other than income tax | R$ 2,801,167 |  | R$ 1,743,038
Comgas [member] | PIS and COFINS [member] |  |  |
Trade and Other Current Receivables [line items] |  |  |
Receivables from taxes other than income tax | 956,338 | R$ 957,663 |
Principal amount | 563,175 | 573,462 |
Monetary restatement | 393,213 | R$ 382,201 |
Comgas [member] | PIS and COFINS [member] | Provision for uncertain tax liabilities [member] |  |  |
Trade and Other Current Receivables [line items] |  |  |
Provisioned amount | 638,975 |  |
Provisioned amount, principal | 375,565 |  |
Provisioned amount, monetary restatement | R$ 263,410 |  |

X
- Definition Provisioned amount, monetary restatement. + References No definition available. + Details
Name: | csan_OtherProvisionsMonetaryRestatment
Namespace Prefix: | csan_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Provisioned amount, principal. + References No definition available. + Details
Name: | csan_OtherProvisionsPrincipalAmount
Namespace Prefix: | csan_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of monetary restatement of receivables from taxes other than income tax. + References No definition available. + Details
Name: | csan_ReceivablesFromTaxesOtherThanIncomeTaxMonetaryRestatement
Namespace Prefix: | csan_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The principal amount of receivables from taxes other than income tax. + References No definition available. + Details
Name: | csan_ReceivablesFromTaxesOtherThanIncomeTaxPrincipalAmount
Namespace Prefix: | csan_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Trade and other current receivables. + References No definition available. + Details
Name: | csan_TradeAndOtherCurrentReceivablesLineItems
Namespace Prefix: | csan_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_d&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_OtherProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of receivables from taxes other than income tax. Income taxes include all domestic and foreign taxes that are based on taxable profits. Income taxes also include taxes, such as withholding taxes, that are payable by a subsidiary, associate or joint arrangement on distributions to the reporting entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ReceivablesFromTaxesOtherThanIncomeTax
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=csan_ComgasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=csan_PisAndCofinsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_ProvisionForTaxesOtherThanIncomeTaxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |