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42 Condensed individual financial information of Companhia Paranaense de Energia - Copel (Details 8) - Companhia Paranaense de Energia - Copel [member] - BRL (R$) R$ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Restricted net assets | R$ 18,197,350 | R$ 16,120,548
Copel geracao e transmissao s.a. [member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Restricted net assets | 10,732,735 | 9,749,705
Centrais Eletricas Rio Jordao - Elejor [member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Restricted net assets | 13,490 | 42,859
UEG Araucaria Ltda. [member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Restricted net assets | 238,211 | 315,740
Copel Distribuicao S.A. [member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Restricted net assets | R$ 7,212,914 | R$ 6,012,244

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