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Equity (Details 2) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
EQUITY      
Revaluation surplus R$ 426,170 R$ 353,349 R$ 591,927
[custom:AdjustmentsRelatedToActuarialLiabilitiesPostEmploymentBenefits1] 291,740 246,626 (271,345)
Taxes on adjustments (88,548) (93,881) 92,190
Deemed cost of fixed assets (55,322) (70,569) (90,347)
[custom:TaxesOnAdjustments2] 18,809 23,994 30,717
Attributed to non-controlling interest (2,721) (144) 207
[custom:ActuarialLiabilityInvestimentRealization] (3,541) [1] (33,205)  
[custom:GainsOnFinancialAssetsSubsidiaries] 10,295    
[custom:TaxesOnAdjustments3] (3,500)    
Revaluation surplus R$ 593,382 R$ 426,170 R$ 353,349
[1] realization of Copel SER's actuarial gain after the transfer of all employees to Copel's other wholly-owned subsidiaries.