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41 Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia - Copel (Details 5) - Companhia Paranaense de Energia - Copel [Member] - BRL (R$) R$ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | R$ 17,135,474 | R$ 15,918,388
Copel Geracao e Transmissao [Member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | 9,749,705 | 8,911,964
Copel Distribuicao [Member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | 6,012,246 | 5,908,755
Copel Telecomunicacoes [Member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | 710,128 | 638,873
Copel Energia [Member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | 243,123 | 83,468
Compagas [Member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | 284,747 | 221,654
UEG Araucaria [Member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | 64,094 | 74,132
Other investments [Member] |  |
CondensedUnconsolidatedFinancialInformationOfCompanhiaParanaenseDeEnergiaCopelLineItems [Line Items] |  |
Investments | R$ 71,431 | R$ 79,542

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