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40 Assets held for sale and discontinued operations (Details Narrative) - BRL (R$) R$ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Sep. 16, 2020 | Sep. 11, 2020 | Dec. 31, 2020 | Dec. 31, 2019
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items] |  |  |  |
Percentage of goodwill |  |  | 85.00% | 101.50%
Copel Telecomunicacoes [member] |  |  |  |
AssetsHeldForSaleAndDiscontinuedOperationsLineItems [Line Items] |  |  |  |
Minimum divestment price | R$ 1,401,090 |  |  |
Bid amount |  | R$ 2,395,000 |  |
Percentage of goodwill |  | 70.94% |  |
Contingent liabilities |  |  | R$ 74,437 |

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