Name:	ppl_Act129MaximumRecoverableCostsUnderPhaseIiiPlan
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The period over which Act 129 Phase III Plan costs will be recovered in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	ppl_Act129RecoveryPeriodUnderPhaseIiiPlan
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The approved amount to be returned to customers due to the TCJA.

No definition available.

Name:	ppl_ApprovedAmountOfRateReductionDueToTCJA
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of deferred recovery of the difference between the pension cost calculated in accordance with the entities pension accounting policy and pension cost using a 15 year amortization period for actuarial gains and losses.

No definition available.

Name:	ppl_DefinedBenefitPlanDeferredRecoveryAmount
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The period over which storm costs will be recovered (in years).

No definition available.

Name:	ppl_PeriodStormCostsRecovered
Namespace Prefix:	ppl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	ppl_RegulatoryAssetsAndLiabilitiesAct129ComplianceRiderNumericAbstract
Namespace Prefix:	ppl_
Data Type:	xbrli:stringItemType
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Period Type:	duration

No definition available.

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

No definition available.

Name:	ppl_RegulatoryAssetsAndLiabilitiesGasLineTrackerNumericAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

No definition available.

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

No definition available.

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

No definition available.

Name:	ppl_RegulatoryAssetsAndLiabilitiesStormDamageExpenseRiderNumericAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Maximum amount of reportable storm damage expenses to be recovered annually through base rates approved by the regulatory agency.

No definition available.

Name:	ppl_StormDamageExpenseRiderMaximumReportStormDamageExpense
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Percentage of public utility's approved return on equity.

No definition available.

Name:	us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_RegulatoryAssetAmortizationPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=us-gaap_PensionAndOtherPostretirementPlansCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ppl_ByCompanyAxis=ppl_PplElectricUtilitiesCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=us-gaap_StormCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=us-gaap_RemovalCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=ppl_StormDamageExpenseRiderMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=ppl_Act129ComplianceRiderMember
Namespace Prefix:
Data Type:	na
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Name:	ppl_ByCompanyAxis=ppl_LouisvilleGasAndElectricAndKentuckyUtilitiesEnergyLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ppl_ByCompanyAxis=ppl_LouisvilleGasAndElectricCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=us-gaap_DeferredFuelCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=us-gaap_AssetRecoverableGasCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RegulatoryAgencyAxis=ppl_KentuckyPublicServiceCommissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=ppl_EnvironmentalCostRecoveryMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ppl_ByCompanyAxis=ppl_KentuckyUtilitiesCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	dei_LegalEntityAxis=ppl_PplElectricUtilitiesCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RegulatoryLiabilityAxis=ppl_TCJAsurcreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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