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Schedule of restricted subsidiaries net assets (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Restricted net assets R$ 20,720,412 R$ 18,197,350
Copel Geracoe Transmissao S A [Member] | Companhia Paranaense De Energia Copel [Member]    
IfrsStatementLineItems [Line Items]    
Restricted net assets 12,662,224 10,732,735
CCEE liabilities | Companhia Paranaense De Energia Copel [Member]    
IfrsStatementLineItems [Line Items]    
Restricted net assets 7,558,556 7,212,914
U E G Araucaria Lteda [Member] | Companhia Paranaense De Energia Copel [Member]    
IfrsStatementLineItems [Line Items]    
Restricted net assets 540,577 238,211
Centrais Eletricas Rio Jordao Elejor [Member] | Companhia Paranaense De Energia Copel [Member]    
IfrsStatementLineItems [Line Items]    
Restricted net assets R$ (40,945) R$ 13,490