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Trade Accounts Receivable (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable R$ (4,078,882) R$ (3,866,429)
Current 3,962,702 3,761,170
Non-current trade receivables 116,180 105,259
Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (3,489,546)  
Overdue up to 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (448,510)  
Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (140,826)  
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (2,255,678) (2,131,227)
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (1,719,504)  
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member] | Overdue up to 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (421,647)  
Electricity Sales To Final Customers And Charges For Use Of The System Copel D I S [Member] | Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (114,527)  
Unbilled electricity sales to final customers and Charges for use of the system - Copel DIS [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (930,801) (850,513)
Unbilled electricity sales to final customers and Charges for use of the system - Copel DIS [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (930,801)  
Electricity Sales To Final Customers [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (177,516) (217,801)
Electricity Sales To Final Customers [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (171,035)  
Electricity Sales To Final Customers [Member] | Overdue up to 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (1,995)  
Electricity Sales To Final Customers [Member] | Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (4,486)  
Other Consumers Receivables [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (187,204) (202,315)
Other Consumers Receivables [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (93,041)  
Other Consumers Receivables [Member] | Overdue up to 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (34,614)  
Other Consumers Receivables [Member] | Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (59,549)  
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (415,674) (471,087)
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (387,163)  
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member] | Overdue up to 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (2,625)  
Energy Supply Concessionaires And Permission Holder And Trading Companies [Member] | Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (25,886)  
C C E E [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (250,381) (189,713)
C C E E [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (130,716)  
C C E E [Member] | Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (119,665)  
Charges For Use Of The Transmission System [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (102,342) (86,155)
Charges For Use Of The Transmission System [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (69,384)  
Charges For Use Of The Transmission System [Member] | Overdue up to 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (602)  
Charges For Use Of The Transmission System [Member] | Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (32,356)  
Expected Credit Losses [Member]    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (240,714) R$ (282,382)
Expected Credit Losses [Member] | Balance Falling Due    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (12,098)  
Expected Credit Losses [Member] | Overdue up to 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable (12,973)  
Expected Credit Losses [Member] | Overdue for more than 90 days    
Disclosure of information about activities subject to rate regulation [line items]    
Trade Accounts Receivable R$ (215,643)