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27 Right-of-use asset and lease liability (Details Narrative)	12 Months Ended
	Dec. 31, 2019
Right of Use Asset And Lease Liability [Abstract]
Discount rate on last adoption	5.85%
Discount rate on initial adoption	9.10%

X

- Definition

Discount rate on initial adoption.

+ References

No definition available.

+ Details

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Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Discount rate on last adoption.

+ References

No definition available.

+ Details

Name:	elp_DiscountRateOnLastAdoption
Namespace Prefix:	elp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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