XML 152 R130.htm IDEA: XBRL DOCUMENT
v3.22.1

Property, plant and equipment, intangible assets, goodwill, right-of-use assets and contract assets - Summary of Depreciation on Straight-line Basis Over the Estimated Useful life of Assets (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2021
Computer equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 20.00%
Bottom of range [member] | Buildings and improvements [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 4.00%
Bottom of range [member] | Machinery, equipment and facilities [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 8.00%
Bottom of range [member] | Other [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 10.00%
Bottom of range [member] | Railcars [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 2.90%
Bottom of range [member] | Locomotives [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 3.30%
Bottom of range [member] | Permanent easement [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 3.00%
Bottom of range [member] | Furniture and fixtures [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 10.00%
Top of range [member] | Buildings and improvements [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 5.00%
Top of range [member] | Machinery, equipment and facilities [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 11.00%
Top of range [member] | Other [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 20.00%
Top of range [member] | Railcars [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 6.00%
Top of range [member] | Locomotives [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 8.00%
Top of range [member] | Permanent easement [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 4.00%
Top of range [member] | Furniture and fixtures [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Percentage of depreciation | 15.00%

X
- Definition The depreciation rate used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_c&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_DepreciationRatePropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ComputerEquipmentMember
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_ClassesOfPropertyPlantAndEquipmentAxis=csan_BuildingsAndImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=csan_MachineryEquipmentAndFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_OtherPropertyPlantAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=csan_RailcarsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=csan_LocomotivesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=csan_PermanentEasementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_FixturesAndFittingsMember
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: |