XML 211 R135.htm IDEA: XBRL DOCUMENT
v3.25.1

Borrowings and financing (Details 5) - 31th issue debentures [member] R$ in Thousands | Mar. 05, 2024 BRL (R$)
--- | ---
IfrsStatementLineItems [Line Items] |
Value | R$ 2,940,478
Series 1 [Member] |
IfrsStatementLineItems [Line Items] |
Value | R$ 507,000
Rate | CDI + 0.49% p.a.
Maturity | 2029
Series 2 [Member] |
IfrsStatementLineItems [Line Items] |
Value | R$ 1,734,467
Rate | CDI + 1.10% p.a.
Maturity | 2031
Series 3 [Member] |
IfrsStatementLineItems [Line Items] |
Value | R$ 699,011
Rate | CDI + 1.31% p.a.
Maturity | 2034

X
- Definition The basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_BorrowingsInterestRateBasis
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The maturity of borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_BorrowingsMaturity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | sbs_FundsRaisedFromUnsecuredDebentures
Namespace Prefix: | sbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | sbs_IfrsStatementLineItems
Namespace Prefix: | sbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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