XML 104 R95.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Investment Properties (Details Narrative) - BRL (R$) R$ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Notes and other explanatory information [abstract] |  |
Investment property market value | R$ 393,600 | R$ 393,600

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

X
- References No definition available. + Details
Name: | sbs_InvestmentPropertyMarketValue
Namespace Prefix: | sbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant