XML 322 R203.htm IDEA: XBRL DOCUMENT v3.23.1
Operating Costs and Expense (Details 3) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]      
Third-party services expense R$ 800,743 R$ 706,599 R$ 558,041
Maintenance Of Electrical System [Member]      
IfrsStatementLineItems [Line Items]      
Third-party services expense 338,283 319,162 206,688
Maintenance Of Facilities [Member]      
IfrsStatementLineItems [Line Items]      
Third-party services expense 97,216 103,726 97,889
Communication Processing And Transmission Of Data [Member]      
IfrsStatementLineItems [Line Items]      
Third-party services expense 91,713 64,772 42,244
Consumer Service [Member]      
IfrsStatementLineItems [Line Items]      
Third-party services expense 83,203 66,733 56,583
Meter Reading And Bill Delivery [Member]      
IfrsStatementLineItems [Line Items]      
Third-party services expense 53,660 52,831 48,895
Consulting And Audit [Member]      
IfrsStatementLineItems [Line Items]      
Third-party services expense 53,344 38,832 41,043
Other Services [Member]      
IfrsStatementLineItems [Line Items]      
Third-party services expense R$ 83,324 R$ 60,543 R$ 64,699