XML 179 R157.htm IDEA: XBRL DOCUMENT v3.22.1

Provision for legal proceedings and judicial deposits - Contingent assets - Additional Information (Detail) - Legal proceedings contingent assets [member] - BRL (R$) R$ in Thousands	Dec. 31, 2021	Dec. 06, 2019
Contingent assets
Contingent asset recognized for tax contingencies	R$ 932,000
Comgas [member]
Contingent assets
Indemnity proceeding due to the economic and financial imbalance of the Concession Agreement	R$ 658,096
ARSESP 933 Resolution [Member] | Comgas [member]
Contingent assets
Contingent asset recognized for service concession arrangement		R$ 683,358

X

- Definition

The amount of contingent asset recognized for service concession arrangement.

+ References

No definition available.

+ Details

Name:	csan_ContingentAssetRecognizedForServiceConcessionArrangement
Namespace Prefix:	csan_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of contingent asset recognized for tax contingencies.

+ References

No definition available.

+ Details

Name:	csan_ContingentAssetRecognizedForTaxContingencies
Namespace Prefix:	csan_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	csan_DisclosureOfContingentAssetsLineItems
Namespace Prefix:	csan_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the estimated financial effect of possible assets that arise from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within control of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2021-01-01
-Paragraph 89
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_89&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_EstimatedFinancialEffectOfContingentAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	csan_ClassesOfContingentAssetsAxis=csan_LegalProceedingsContingentAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	csan_ResolutionTypeAxis=csan_Arsesp933ResolutionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: