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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
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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

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