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10 Accounts Receivables - Concessions (Details 2) - Piped Gas Distribution Service Concession [Member] - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Accounts Receivable Concessions [Line Items] |  |
Concession agreement - gas distribution, beginning | R$ 322,259 | R$ 303,668
Transfers from contract assets | 16,574 | 6,399
Reclassified from intangible assets | (24,835) |
Fair value recognition | 10,415 | 12,193
Loss on disposal | (28) | (1)
Concession agreement - gas distribution, ending | R$ 324,385 | R$ 322,259

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

X
- Definition It represents distribution concession agreeement gas distribution. + References No definition available. + Details
Name: | elp_ConcessionAgreementGasDistributionFairValueRecognition
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition It represents distribution concession agreeement gas distribution. + References No definition available. + Details
Name: | elp_ConcessionAgreementGasDistributionLossOnDisposal
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition It represents distribution concession agreeement gas distribution. + References No definition available. + Details
Name: | elp_ConcessionAgreementGasDistributionReclassifiedFromIntangibleAssets
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition It represents distribution concession agreeement gas distribution. + References No definition available. + Details
Name: | elp_ConcessionAgreementGasDistributionTransferFromContractassets
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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

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