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41 Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia - Copel (Details 8) - Companhia Paranaense de Energia - Copel [Member] - BRL (R$)
R$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]    
Restricted net assets R$ 16,120,548 R$ 15,245,358
Copel Geracao e Transmissao S.A. [Member]    
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]    
Restricted net assets 9,749,705 8,911,964
Centrais Eletricas Rio Jordao - Elejor [Member]    
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]    
Restricted net assets 6,012,244 53,977
UEG Araucaria Ltda. [Member]    
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]    
Restricted net assets 315,740 370,662
Copel Distribuicao S.A. [Member]    
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items]    
Restricted net assets R$ 42,859 R$ 5,908,755