v3.26.1
Trade receivables (Details Narrative)
R$ in Thousands
12 Months Ended
Dec. 31, 2025
BRL (R$)
Non Adjusting Event [Member]
IfrsStatementLineItems [Line Items]
Judicial payment received
R$ 401,679
X
- References
No definition available.
+ Details
Name:
sbs_IfrsStatementLineItems
Namespace Prefix:
sbs_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
sbs_JudicialPaymentReceived
Namespace Prefix:
sbs_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
duration
X
- Details
Name:
ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=sbs_NonAdjustingEventMember
Namespace Prefix:
Data Type:
na
Balance Type:
Period Type: