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The financial covenants contained in the agreements are presented below: (Details) - Copel geracaoe transmissao SA [member]
 12 Months Ended
Dec. 31, 2021
B N D E S Finemn 8209891 Maua [Member]  
IfrsStatementLineItems [Line Items]  
Company Copel GeT
Contract BNDES Finem No. 820989.1 - Mauá
Annual financial index EBITDA /  Net financial results 
Limit ≥ 1.3
Bancodo Brasiln 21020000 Maua [Member]  
IfrsStatementLineItems [Line Items]  
Contract Banco do Brasil No. 21/02000-0 - Mauá
Annual financial index EBITDA /  Net financial results 
Limit ≥ 1.3
B N D E S Finemn 14205611 [Member]  
IfrsStatementLineItems [Line Items]  
Company Copel DIS
Contract BNDES Finem No. 14205611
Annual financial index Financial indebtedness / adjusted EBITIDA
Limit ≤ 4.0
B N D E S Finemn 14212711 [Member]  
IfrsStatementLineItems [Line Items]  
Company Santa Maria
Contract BNDES Finem No. 14212711
Annual financial index Debt service coverage ratio
Limit ≥ 1.3
B N D E S Finemn 14212721 [Member]  
IfrsStatementLineItems [Line Items]  
Company Santa Helena
Contract BNDES Finem No. 14212721
B N D E S Assignment Agreement [Member]  
IfrsStatementLineItems [Line Items]  
Company São Bento Energia, Investimento e Participações
Contract BNDES Assignment Agreement
Annual financial index Debt service coverage ratio
Limit ≥ 1.3
B N D E S Finemn 11211531 [Member]  
IfrsStatementLineItems [Line Items]  
Company GE Boa Vista S.A.
Contract BNDES Finem No. 11211531
B N D E S Finemn 11211521 [Member]  
IfrsStatementLineItems [Line Items]  
Company GE Farol S.A.
Contract BNDES Finem No. 11211521
B N D E S Finemn 11211551 [Member]  
IfrsStatementLineItems [Line Items]  
Company GE Olho D´Água S.A.
Contract BNDES Finem No. 11211551
B N D E S Finemn 11211541 [Member]  
IfrsStatementLineItems [Line Items]  
Company GE São Bento do Norte S.A.
Contract BNDES Finem No. 11211541
B N D E S Finemn 18204611 [Member]  
IfrsStatementLineItems [Line Items]  
Company Cutia
Contract BNDES Finem No. 18204611
Annual financial index Debt service coverage ratio
Limit ≥ 1.2
B N D E S Finemn 13212221 [Member]  
IfrsStatementLineItems [Line Items]  
Company Costa Oeste
Contract BNDES Finem No. 13212221
Annual financial index Debt service coverage ratio
Limit ≥ 1.3
B N D E S Finemn 14205851 [Member]  
IfrsStatementLineItems [Line Items]  
Company Marumbi
Contract BNDES Finem No. 14205851
Annual financial index Debt service coverage ratio
Limit ≥ 1.3