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Operations (Details 3)	12 Months Ended
	Dec. 31, 2022
Voltalia Sao Migueldo Gostoso I Participacoes S A [Member]
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Joint ventures	Voltalia São Miguel do Gostoso I Participações S.A.
Headquarters	São Paulo/SP
Main activity	Interests in companies
Interest	49.00%
Investor	Copel
Solar Parana G D Participcoes S A [Member]
IfrsStatementLineItems [Line Items]
Joint ventures	Solar Paraná GD Participações S.A. (a)	[1]
Headquarters	Curitiba/PR	[1]
Main activity	Interests in companies	[1]
Interest	49.00%	[1]
Investor	Copel	[1]
Caiua Transmissorade Energia S A [Member]
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Joint ventures	Caiuá Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Integracao Maranhense Transmissorade Energia S A [Member]
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Joint ventures	Integração Maranhense Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Matrincha Transmissorade Energia T P N O R T E S A [Member]
IfrsStatementLineItems [Line Items]
Joint ventures	Matrinchã Transmissora de Energia (TP NORTE) S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Guaraciaba Transmissorade Energia T P S U L S A [Member]
IfrsStatementLineItems [Line Items]
Joint ventures	Guaraciaba Transmissora de Energia (TP SUL) S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Paranaiba Transmissorade Energia S A [Member]
IfrsStatementLineItems [Line Items]
Joint ventures	Paranaíba Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	24.50%
Investor	Copel GeT
Matade Santa Genebra Transmissao S A [Member]
IfrsStatementLineItems [Line Items]
Joint ventures	Mata de Santa Genebra Transmissão S.A.
Headquarters	Jundiaí/SP
Main activity	Transmission of electricity
Interest	50.10%
Investor	Copel GeT
Cantareira Transmissorade Energia S A [Member]
IfrsStatementLineItems [Line Items]
Joint ventures	Cantareira Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
[1] Holding of 6 Special Purpose Entities (SPEs) operating in the distributed generation sector (photovoltaic plants): Pharma Solar II, Pharma Solar III, Pharma Solar IV, in commercial operation, and Bandeirantes Solar I, Bandeirantes Solar II and Bandeirantes Solar III, in pre-operating stage.

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