Represents the information about compensation for investment period.

No definition available.

Name:	elp_CompensationForInvestmentPeriod
Namespace Prefix:	elp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The description of sensitivity analysis of interest rate and monetary variation risk baseline scenario.

+ References

No definition available.

+ Details

Name:	elp_DescriptionOfSensitivityAnalysisOfInterestRateAndMonetaryVariationRiskBaselineScenario
Namespace Prefix:	elp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to extended term for thermoelectric power generation.

+ References

No definition available.

+ Details

Name:	elp_ExtendedTermForThermoelectricPowerGeneration
Namespace Prefix:	elp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of extension terms.

+ References

No definition available.

+ Details

Name:	elp_ExtensionTerms
Namespace Prefix:	elp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to final term for thermoelectric power generation.

+ References

No definition available.

+ Details

Name:	elp_FinalTermForThermoelectricPowerGeneration
Namespace Prefix:	elp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to financial instruments probable scenario.

+ References

No definition available.

+ Details

Name:	elp_FinancialInstrumentsProbableScenarioOne
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to financial instruments probable scenario.

+ References

No definition available.

+ Details

Name:	elp_FinancialInstrumentsProbableScenarioTwo
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The description of increase (decrease) in energy reallocation mechanism.

+ References

No definition available.

+ Details

Name:	elp_IncreaseDecreaseInEnergyReallocationMechanism
Namespace Prefix:	elp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of maturity of debt instrument.

+ References

No definition available.

+ Details

Name:	elp_MaturityOfDebtInstrument
Namespace Prefix:	elp_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of maturity terms of concessions.

+ References

No definition available.

+ Details

Name:	elp_MaturityTermsOfConcessions
Namespace Prefix:	elp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount refers to net working capital.

+ References

No definition available.

+ Details

Name:	elp_NetWorkingCapital
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of nonperformance of assets.

+ References

No definition available.

+ Details

Name:	elp_NonperformanceOfAssets
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represent information about the percentage of basic assumption of cdi.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfBasicAssumptionOfCdi
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent information about the percentage of debt instrument yield.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfDebtInstrumentYield
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to percentage of discounted expected cash inflows.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfDiscountedExpectedCashInflows
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information about percentage of distributor contracting level.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfDistributorContractingLevel
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to percentage of electric shortage risk.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfElectricShortageRisk
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information about percentage of market share.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfMarketShare
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to percentage of maximum electric shortage risk.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfMaximumElectricShortageRisk
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information about percentage of maximum variation.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfMaximumVariation
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information pertaining to percentage of net discount rate.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfNetDiscountRate
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the information about percentage of regulatory limits.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfRegulatoryLimits
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of variation in relation to net balance.

+ References

No definition available.

+ Details

Name:	elp_VariationInRelationToNetBalance
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ClosingForeignExchangeRate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

+ Details

Name:	ifrs-full_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=elp_RiskOfPowerPurchaseAndSaleTransactionsPriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=elp_InterestRateRiskAndMonetaryVariationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=elp_RiskOfNonPerformanceOfWindfarmsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=elp_PurchaseContractsRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=elp_SaleContractsRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=elp_NationalTreasuryBondMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=elp_HydroelectricPowerGenerationAndElectricPowerTransmissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=elp_RiskOfNonRenewalOfConcessionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=elp_ThermoelectricPowerGenerationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=elp_TwoPlantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=elp_HPPGovernadorBentoMunhozdaRochaNettoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=elp_CopelGeracaoeTransmissaoSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=elp_HPPSaoJorgeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

35 Financial Instruments (Details Narrative) R$ in Thousands		12 Months Ended
	Mar. 03, 2020	Dec. 31, 2019 BRL (R$) Exchange MW	Dec. 31, 2018 BRL (R$)
Disclosure of detailed information about financial instruments [line items]
Percentage of basic assumption of CDI		120.00%
Percentage of discounted expected cash inflows		(9.04%)
Percentage of net discount rate		8.16%
Net working capital			R$ 4,200
Closing foreign exchange rate (R$/USD) \| Exchange		3.70
Percentage of electric shortage risk		64.00%
Percentage of maximum electric shortage risk		5.00%
Increase (decrease) in energy reallocation mechanism		Restricted to 5% by revision or 10% in the concession period.
Period for compensation of investments		10 years
Percentage of market share		100.00%
Percentage of maximum variation		4.00%
Bottom Of Range [Member]
Disclosure of detailed information about financial instruments [line items]
Extended term for thermoelectric power generation \| MW		36
Percentage of distributor contracting level		100.00%
Percentage of regulatory limits		100.00%
Top Of Range [Member]
Disclosure of detailed information about financial instruments [line items]
Final term for thermoelectric power generation \| MW		60
Percentage of distributor contracting level		105.00%
Percentage of regulatory limits		105.00%
Risk Related To Price Of Power Purchase And Sale Transactions [Member]
Disclosure of detailed information about financial instruments [line items]
Closing foreign exchange rate (R$/USD) \| Exchange		4.60
Financial instruments probable scenario 1		25.00%
Financial instruments probable scenario 2		50.00%
Variation in relation to the net balance			3,786
Foreign Exchange Risk [Member]
Disclosure of detailed information about financial instruments [line items]
Financial instruments probable scenario 1		25.00%
Financial instruments probable scenario 2		50.00%
Foreign Exchange Risk [Member] \| Euro
Disclosure of detailed information about financial instruments [line items]
Notional value		R$ 22,000
Interest Rate Risk And Monetary Variation [Member]
Disclosure of detailed information about financial instruments [line items]
Financial instruments probable scenario 1		25.00%
Financial instruments probable scenario 2		50.00%
Description of sensitivity analysis of interest rate and monetary variation risk baseline scenario		CDI/Selic: 3.25%, IPCA: 2.52%, IGP-DI: 4.93%, IGP-M: 4.83% and TJLP: 5.20%
Risk Of Non-Performance Of Windfarms [Member]
Disclosure of detailed information about financial instruments [line items]
Non-performance of assets		R$ 65,790	83,525
Purchase Contracts Risk [Member]
Disclosure of detailed information about financial instruments [line items]
Notional value		4,448,602	222,928
Sale Contracts Risk [Member]
Disclosure of detailed information about financial instruments [line items]
Notional value		R$ 4,089,801	R$ 95,382
National Treasury Bond (NTN-B) [Member]
Disclosure of detailed information about financial instruments [line items]
Maturity of debt instrument		Aug. 15, 2026
Percentage of debt instrument yield		2.97%
Hydroelectric Power Generation And Electric Power Transmission [Member] \| Risk Of Non-Renewal Of Concessions [Member]
Disclosure of detailed information about financial instruments [line items]
Extension Terms		30 years
Thermoelectric Power Generation [Member] \| Risk Of Non-Renewal Of Concessions [Member]
Disclosure of detailed information about financial instruments [line items]
Extension Terms		20 years
Two Plant Of Generation And Transmission [Member] \| Risk Of Non-Renewal Of Concessions [Member]
Disclosure of detailed information about financial instruments [line items]
Maturity terms of concessions		5 years
HPP Governador Bento Munhoz Da Rocha Netto [Member] \| Risk Of Non-Renewal Of Concessions [Member]
Disclosure of detailed information about financial instruments [line items]
Maturity terms of concessions		2023
HPP Governador Bento Munhoz Da Rocha Netto [Member] \| Risk Of Non-Renewal Of Concessions [Member] \| Copel Geracao e Transmissao S.A. [Member]
Disclosure of detailed information about financial instruments [line items]
Extension Terms	30 years
HPP Sao Jorge [Member] \| Risk Of Non-Renewal Of Concessions [Member]
Disclosure of detailed information about financial instruments [line items]
Maturity terms of concessions		2024