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27 Right-of-use asset and lease liability (Details 2) R$ in Thousands | Dec. 31, 2020 BRL (R$)
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Right of Use Asset And Lease Liability [Abstract] |
2022 | R$ 41,948
2023 | 27,625
2024 | 19,656
2025 | 8,953
2026 | 51
After 2026 | 889
Undiscounted amounts | 99,122
Embedded interest | (1,954)
Lease Liabilities balance | R$ 97,168

X
- Definition The amount of liabilities related to embedded interest. + References No definition available. + Details
Name: | elp_EmbeddedInterest
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References No definition available. + Details
Name: | elp_LeaseLiabilities1
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for paid in third fiscal year following current fiscal year. + References No definition available. + Details
Name: | elp_LesseePaymentsDueAfterYearFive
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for paid in next fiscal year following current fiscal year. + References No definition available. + Details
Name: | elp_LesseePaymentsDueNextTwelveMonths
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for paid in third fiscal year following current fiscal year. + References No definition available. + Details
Name: | elp_LesseePaymentsDueYearFive
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for paid in third fiscal year following current fiscal year. + References No definition available. + Details
Name: | elp_LesseePaymentsDueYearFour
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for paid in third fiscal year following current fiscal year. + References No definition available. + Details
Name: | elp_LesseePaymentsDueYearThree
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for paid in second fiscal year following current fiscal year. + References No definition available. + Details
Name: | elp_LesseePaymentsDueYearTwo
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liabilities related to maturity of noncurrent installments. + References No definition available. + Details
Name: | elp_MaturityOfNoncurrentInstallments
Namespace Prefix: | elp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | elp_RightofuseAssetAndLeaseLiabilityAbstract
Namespace Prefix: | elp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration