The details of the entity's legal form. Examples are partnership, limited liability company, trust, etc.

No definition available.

Name:	dei_EntityLegalForm
Namespace Prefix:	dei_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of annual adjustment.

+ References

No definition available.

+ Details

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

- Definition

The amount of closing.

+ References

No definition available.

+ Details

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

- 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:	elp_DisclosureOfAccountsPayableRelatedToConcessionsLineItems
Namespace Prefix:	elp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of discount rate.

+ References

No definition available.

+ Details

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

- Definition

Represent information about the grant date.

+ References

No definition available.

+ Details

Name:	elp_GrantDate
Namespace Prefix:	elp_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of public property name.

+ References

No definition available.

+ Details

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

- Definition

Represent information about the signature date.

+ References

No definition available.

+ Details

Name:	elp_SignatureDate
Namespace Prefix:	elp_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of trade and other noncurrent payables.

+ References

No definition available.

+ Details

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

- Definition

The amount of current trade payables and current other payables. [Refer: Current trade payables; Other current payables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 54
-Subparagraph k
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_k&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_TradeAndOtherCurrentPayables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of trade payables and other payables. [Refer: Trade payables; Other payables]

+ References

+ Details

Name:	ifrs-full_TradeAndOtherPayables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=elp_PublicProperty1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=elp_PublicProperty2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=elp_PublicProperty3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=elp_PublicProperty7Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=elp_PublicProperty8Member
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26 Accounts Payable Related to Concessions (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Accounts payable related to concession	R$ 612,587	R$ 584,163	R$ 554,954
Accounts payable related to concession, current	73,032	67,858
Accounts payable related to concession, noncurrent	R$ 539,555	516,305
HPP Maua [Member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Maua
Company	Copel GeT
Grant	Jun. 29, 2007
Signature	Jul. 03, 2007
Closing	07.2042
Discount rate	5.65% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 16,890	16,709
HPP Colider [Member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Colider
Company	Copel GeT
Grant	Dec. 29, 2010
Signature	Jan. 17, 2011
Closing	01.2046
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 24,353	23,864
HPP Baixo Iguacu [Member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Baixo Iguacu
Company	Copel GeT
Grant	Jul. 19, 2012
Signature	Aug. 20, 2012
Closing	01.2047
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 7,588	7,412
HPP Derivacao Rio Jordao [Member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Derivacao Rio Jordao
Company	Copel GeT
Grant	Jul. 11, 2013
Signature	Feb. 24, 2014
Closing	02.2019
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 563,756	47
HPP Fundao e HPP Santa Clara [Member]
DisclosureOfAccountsPayableRelatedToConcessionsLineItems [Line Items]
Public property name	HPP Fundao e HPP Santa Clara
Company	Elejor
Grant	Oct. 23, 2001
Signature	Oct. 25, 2001
Closing	10.2036
Discount rate	11.00% p.y.
Annual adjustment	IGPM
Accounts payable related to concession		R$ 536,131