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12 Other Receivables (Details Narrative) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CDE Transfer [Member]
Disclosure of fair value measurement of assets [line items]
CDE Transfer amount (per month)	R$ 62,699	R$ 51,200

X

- Definition

The amount refers to CDE Transfer.

+ References

No definition available.

+ Details

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

X

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

X

- Details

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