Name:	ppl_GuaranteeMaximumExposure2021
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of the cap on an indemnity with respect to certain surrenders of tax losses.

No definition available.

Name:	ppl_IndemnificationCapSurrendersOfTaxLosses
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Maximum aggregate insurance coverage for liability assumed under contract for bodily injury and property damage.

No definition available.

Name:	ppl_MaximumAggregateCoverageBodilyInjuryAndPropertyDamage
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	ppl_OtherGuaranteeNumericAbstract
Namespace Prefix:	ppl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Entity's contingent proportionate share of OVEC's outstanding debt.

No definition available.

Name:	ppl_ProportionateShareOfOhioValleyElectricCorporationOutstandingDebt
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_GuaranteeObligationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

States the reasons why the guarantor is unable to develop an estimate of the maximum potential amount of future payments under its guarantee (or each group of similar guarantees).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

Name:	us-gaap_GuaranteeObligationsMaximumExposureInestimable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Describe the approximate term of the guarantee or each group of similar guarantees.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

Name:	us-gaap_GuaranteeObligationsTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	ppl_GuaranteeByEntityAxis=ppl_PplGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_IndemnificationGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_GuaranteeByDescriptionAxis=ppl_IndemnificationsRelatedToTheSaleOfTheUKUtilityBusinessDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_GuaranteeByDescriptionAxis=ppl_IndemnificationsRelatedToCertainTaxLiabilitiesRelatedToTheSaleOfTheUKUtilityBusinessDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_GuaranteeByEntityAxis=ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_GuaranteeByDescriptionAxis=ppl_IndemnificationsIssuedByLkeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_FinancialGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_GuaranteeByDescriptionAxis=ppl_GuaranteeForShortfallRelatedToOhioValleyElectricCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	dei_LegalEntityAxis=ppl_LouisvilleGasAndElectricCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: