XML 88 R77.htm IDEA: XBRL DOCUMENT v3.23.1

Risk Management (Details 1) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
United States of America, Dollars
IfrsStatementLineItems [Line Items]
Exchange rate	$ 5.2177	$ 5.5805
Exchange rate variation	(6.50%)
Japan, Yen
IfrsStatementLineItems [Line Items]
Exchange rate	$ 0.03957	$ 0.04847
Exchange rate variation	(18.40%)

X

- References

No definition available.

+ Details

Name:	sbs_ClosingForeignExchangeRate1
Namespace Prefix:	sbs_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	sbs_ClosingForeignExchangeRateVariation
Namespace Prefix:	sbs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	sbs_IfrsStatementLineItems
Namespace Prefix:	sbs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CurrencyAxis=currency_JPY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: