XML 185 R163.htm IDEA: XBRL DOCUMENT
v3.22.1

Net sales - Additional Information (Details - Textual) | 12 Months Ended
--- | ---
Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [abstract] |
Period of tariff cycles for natural gas sales, with annual inflation adjustment | 5 years

X
- Definition The period of tariff cycles for natural gas sales, with annual inflation adjustment. + References No definition available. + Details
Name: | csan_PeriodOfTariffCyclesForNaturalGasSalesWithAnnualInflationAdjustment
Namespace Prefix: | csan_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration