XML 190 R114.htm IDEA: XBRL DOCUMENT v3.25.1

Investment Properties (Details Narrative) - BRL (R$) R$ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Notes and other explanatory information [abstract]
Investment properties, market value	R$ 453,700	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