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Schedule of restricted subsidiaries net assets (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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IfrsStatementLineItems [Line Items] |  |
Restricted net assets | R$ 20,720,412 | R$ 18,197,350
Copel Geracoe Transmissao S A [Member] | Companhia Paranaense De Energia Copel [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Restricted net assets | 12,662,224 | 10,732,735
CCEE liabilities | Companhia Paranaense De Energia Copel [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Restricted net assets | 7,558,556 | 7,212,914
U E G Araucaria Lteda [Member] | Companhia Paranaense De Energia Copel [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Restricted net assets | 540,577 | 238,211
Centrais Eletricas Rio Jordao Elejor [Member] | Companhia Paranaense De Energia Copel [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Restricted net assets | R$ (40,945) | R$ 13,490

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