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Schedule of investments in subsidiaries (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Entity Information [Line Items] |  |
Investments | R$ 20,990,155 | R$ 18,652,792
Copel Distribuicao [Member] |  |
Entity Information [Line Items] |  |
Investments | 7,558,556 | 7,212,915
Copel Telecomunicacoes [Member] |  |
Entity Information [Line Items] |  |
Investments |  | 757,799
Copel T E L [Member] |  |
Entity Information [Line Items] |  |
Investments |  | (758,742)
Copel Energia [Member] |  |
Entity Information [Line Items] |  |
Investments | 389,863 | 356,922
Compagas [Member] |  |
Entity Information [Line Items] |  |
Investments | 259,031 | 252,481
U E G Araucaria [Member] |  |
Entity Information [Line Items] |  |
Investments | 109,737 | 48,355
Other [Member] |  |
Entity Information [Line Items] |  |
Investments | 10,744 | 50,328
Companhia Paranaense De Energia Copel [Member] | Copel Geracaoe Transmissao [Member] |  |
Entity Information [Line Items] |  |
Investments | R$ 12,662,224 | R$ 10,732,734

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- Definition The amount of investments in subsidiaries in an entity's separate financial statements. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2021-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2021-en-r&anchor=para_10&doctype=Standard -URIDate 2021-03-24 + Details
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