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13 Taxes (Details 4) R$ in Thousands	Dec. 31, 2020 BRL (R$)
Taxes [Abstract]
Calculated until February 2020	R$ 3,805,985
Calculated from March to June 2020	121,838
Total	121,838
Current	121,838
Noncurrent	R$ 3,805,985

X

- Definition

The amount of pis and cofins to be refunded to consumers.

+ References

No definition available.

+ Details

Name:	elp_PisAndCofinsToBeRefundedToConsumers
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of pis and cofins to be refunded to consumers current.

+ References

No definition available.

+ Details

Name:	elp_PisAndCofinsToBeRefundedToConsumersCurrent
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of pis and cofins to be refunded to consumers from march to june2020.

+ References

No definition available.

+ Details

Name:	elp_PisAndCofinsToBeRefundedToConsumersFromMarchToJune2020
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of pis and cofins to be refunded to consumers noncurrent.

+ References

No definition available.

+ Details

Name:	elp_PisAndCofinsToBeRefundedToConsumersNoncurrent
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of pis and cofins to be refunded to consumers until feb2020.

+ References

No definition available.

+ Details

Name:	elp_PisAndCofinsToBeRefundedToConsumersUntilFeb2020
Namespace Prefix:	elp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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