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10 Accounts Receivables - Concessions (Details 1) - Power distribution service concession [member] - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Accounts Receivable Concessions [Line Items] |  |
Balance at beginning | R$ 836,818 | R$ 783,023
Transfers from contract assets | 86,154 | 28,987
Transfers from investments | (99) | 348
Transfers to other receivables (assets held for disposal) | (7,428) | (1,578)
Fair value recognition | 45,187 | 26,231
Incorporations |  | (75)
Loss on disposal | (114) | (118)
Balance at ending | R$ 960,518 | R$ 836,818

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- Definition Line items represent accounr=ts receivale concession. + References No definition available. + Details
Name: | elp_DisclosureOfAccountsReceivableConcessionsLineItems
Namespace Prefix: | elp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition It represents distribution concession agreement. + References No definition available. + Details
Name: | elp_DistributionConcessionAgreement
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition It represents distribution concession agreeemnt tranfers fair value recognition. + References No definition available. + Details
Name: | elp_DistributionConcessionAgreementFairValueRecognition
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of distribution concesion agreement incorporation recognition. + References No definition available. + Details
Name: | elp_DistributionConcessionAgreementIncorporationRecognition
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition It represents distribution concession agreeemnt of loss on disposal. + References No definition available. + Details
Name: | elp_DistributionConcessionAgreementLossOnDisposal
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition It represents distribution concession agreeemnt tranfers from investments. + References No definition available. + Details
Name: | elp_DistributionConcessionAgreementTransferFromInvestments
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition It represents distribution concession agreeemnt tranfers from intangible assets. + References No definition available. + Details
Name: | elp_DistributionConcessionAgreementTransfersFromIntangibleAssets
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount represents the transfers from contract assets. + References No definition available. + Details
Name: | elp_TransfersFromContractAssets
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | ifrs-full_ClassesOfAssetsAxis=elp_PowerDistributionServiceConcessionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |