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9 Net Sectorial Financial Assets and Liabilities (Details Narrative)	12 Months Ended
	Dec. 31, 2019
Overcontracting [Member]
Disclosure of financial assets [line items]
Percentage of internal tranfer limit	105.80%

X

- Definition

The percentage of integral transfer limit.

+ References

No definition available.

+ Details

Name:	elp_PercentageOfInternalTranferLimit
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
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_DisclosureOfFinancialAssetsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=elp_OvercontractingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: