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32 Operating Costs and Expenses (Details Narrative) R$ in Thousands	12 Months Ended
	Dec. 31, 2019 BRL (R$)
Wind farms of the brisa complex [member]
Disclosure of operating costs and expenses [line items]
Revenue related to the reimbursement	R$ 97,664

X

- Definition

Operating Costs And Expenses [Line Items]

+ References

No definition available.

+ Details

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

X

- Definition

The amount refers to revenue related to reimbursement.

+ References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=elp_WindfarmsOfTheBrisaComplexMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: