XML 156 R80.htm IDEA: XBRL DOCUMENT v3.25.1
Summary of material information on accounting policies (Details Narrative)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]    
Description of accrued income tax The income tax was defined at a rate of 15%, plus a 10% surtax on taxable income exceeding R$ 240.  
Annual revenue calculated rate 0.50%  
Programa De Formacao Do Patrimonio Do Servidor Publico [Member]    
IfrsStatementLineItems [Line Items]    
Pasep rate 1.65%  
Contribuicao Para O Financiamentoda Seguridade Social [Member]    
IfrsStatementLineItems [Line Items]    
Cofins rate 7.60%  
Programa De Formacao Do Patrimonio Do Servidor Publico 1 [Member]    
IfrsStatementLineItems [Line Items]    
Pasep for financial revenues rate 0.65%  
Contribuicao Para O Financiamentoda Seguridade Social 1 [Member]    
IfrsStatementLineItems [Line Items]    
Cofins for financial revenues rate 4.00%  
Sabesp Olympia S A [Member]    
IfrsStatementLineItems [Line Items]    
Direct interest 100.00% 100.00%