XML 253 R177.htm IDEA: XBRL DOCUMENT v3.25.1
Operating costs and expenses (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]      
Operating costs R$ (16,603,073) R$ (16,051,866) R$ (14,350,903)
Selling expenses (917,589) (984,060) (911,967)
Amount recorded expense (Note 31)   (557,789) (652,920) (782,057)
Administrative expenses (2,311,438) (1,597,548) (1,398,507)
Operating costs and expenses (20,389,889) (19,286,394) (17,443,434)
Salaries Payroll Charges And Benefits [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (2,357,526) (2,717,005) (2,285,765)
Selling expenses (335,382) (347,536) (306,864)
Administrative expenses (602,217) (423,948) (284,562)
Operating costs and expenses (3,295,125) (3,488,489) (2,877,191)
Pension Obligations [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (23,704) (36,998) (29,796)
Selling expenses (3,825) (3,359) (4,021)
Administrative expenses (78,428) (122,248) (84,670)
Operating costs and expenses (105,957) (162,605) (118,487)
Construction Costs [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (6,085,895) (5,474,729) (4,754,383)
Operating costs and expenses (6,085,895) (5,474,729) (4,754,383)
General Supplies [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (345,771) (356,481) (369,381)
Selling expenses (4,679) (6,746) (7,121)
Administrative expenses (108,901) (23,008) (23,664)
Operating costs and expenses (459,351) (386,235) (400,166)
Treatment Supplies [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (577,639) (558,557) (598,993)
Operating costs and expenses (577,639) (558,557) (598,993)
Outside Services [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (1,915,851) (1,843,213) (1,724,347)
Selling expenses (423,964) (439,995) (418,632)
Administrative expenses (391,637) (287,744) (250,293)
Operating costs and expenses (2,731,452) (2,570,952) (2,393,272)
Electricity One [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (1,573,067) (1,514,542) (1,497,644)
Selling expenses (658) (673) (1,001)
Administrative expenses (1,297) (2,020) (1,896)
Operating costs and expenses (1,575,022) (1,517,235) (1,500,541)
General Expenses [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (1,246,474) (967,148) (831,503)
Selling expenses (98,800) (116,933) (107,313)
Administrative expenses (898,587) (509,984) (548,626)
Operating costs and expenses (2,243,861) (1,594,065) (1,487,442)
Depreciation And Amortization [Member]      
IfrsStatementLineItems [Line Items]      
Operating costs (2,477,146) (2,583,193) (2,259,091)
Selling expenses (50,281) (68,818) (67,015)
Administrative expenses (149,215) (138,575) (124,743)
Operating costs and expenses (2,676,642) (2,790,586) (2,450,849)
Bad Debt Expense Net Of Recoveries [Member]      
IfrsStatementLineItems [Line Items]      
Amount recorded expense (Note 31)   (557,789) (652,920) (782,057)
Operating costs and expenses (557,789) (652,920) (782,057)
Tax Expense [Member]      
IfrsStatementLineItems [Line Items]      
Administrative expenses (81,156) (90,021) (80,053)
Operating costs and expenses R$ (81,156) R$ (90,021) R$ (80,053)