Name:	ppl_AmountForClaimsRemainingAgainstCompanyForSpotMarketBilateralSales
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Number of plaintiffs that have filed claims pertaining to a loss contingency at the Can Run plant.

No definition available.

Name:	ppl_CaneRunPlantNumberOfPlaintiffsFiledSuit
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The number of Clean Air Act violation claims that remains unresolved after a July 2014 court ruling.

No definition available.

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Data Type:	xbrli:integerItemType
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The number of miles surrounding the plant that a class of plaintiffs could include in a class action suit.

No definition available.

Name:	ppl_CanRunPlantClassOfResidentsMilesWithinPlant
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Data Type:	num:lengthItemType
Balance Type:	na
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Capacity (in MW) of natural gas-fired combined-cycle generating facility to be owned by CPV Maryland, LLC.

No definition available.

Name:	ppl_CapacityOfNaturalGasFiredCombinedCycleGeneratingFacility
Namespace Prefix:	ppl_
Data Type:	num:powerItemType
Balance Type:	na
Period Type:	duration

Frequency of competitive solicitations each plan year beginning in April 2013 to procure electricity.

No definition available.

Name:	ppl_CompetitiveSolicitationsFrequencyEachPlanYear
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Data Type:	xbrli:stringItemType
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Period Type:	duration

Longest term, in months, of layered short-term full requirements products for residential and small commercial and industrial provider of last resort customers.

No definition available.

Name:	ppl_CompetitiveSolicitationsLongestTermOfProducts
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Recurring term, in months, of spot market product for large commercial and industrial provider of last resort customers.

No definition available.

Name:	ppl_CompetitiveSolicitationsRecurringTermOfSpotMarketProduct
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Shortest term, in months, of layered short-term full requirements products for residential and small commercial and industrial provider of last resort customers.

No definition available.

Name:	ppl_CompetitiveSolicitationsShortestTermOfProducts
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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

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

Period of years from December 1998 that the company was required to respond to the FERC with market analysis information after implementing market-based rates.

No definition available.

Name:	ppl_InitialTimePeriodRequiredToRespondToInfoRequest
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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

Name:	ppl_LegalMattersSierraClubLitigationNumericAbstract
Namespace Prefix:	ppl_
Data Type:	xbrli:stringItemType
Balance Type:	na
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Pre-tax gain (loss) incurred for modifications to the long-term purchase commitment.

No definition available.

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

The number of plant projects included in litigation as a result of a second amended complaint related to violations of the Clean Air Act.

No definition available.

Name:	ppl_LossContigencyNumbeRofPlantsIncludedInSecondComplaint
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of plant projects that the court dismissed best available control technology and prevention of significant deterioration claims against relating to a complaint filed under the Clean Air Act.

No definition available.

Name:	ppl_LossContigencyNumberOfPlantsWithClaimsDismissed
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The average amount, per day per violation, of injuctive relief and civil penalities in the complaint.

No definition available.

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

The total amount of civil penalities in the complaint to be used for beneficial mitigation projects.

No definition available.

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

The increase in the number of projects included in litigation as a result of an additional notice filing.

No definition available.

Name:	ppl_LossContingencyEstimatedNumberOfProjectsAllegedNotInCompliance
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The total amount of original pending claims pertaining to a loss contingency.

No definition available.

Name:	ppl_LossContingencyPendingClaimsNotAccruedNumber
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of original claims pertaining to a loss contingency that did not allege Prevention of Significant Deterioation related to voilations under the federal Clean Air Act. These claims alledge failure to update the Title V operating permit.

No definition available.

Name:	ppl_LossContingencyPendingClaimsNotAccruedOperatingPermit
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The settlement amount reached by both parties for spot market bilateral sales made in the Pacific Northeast.

No definition available.

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

Amount of civil penalties that can be assessed by the FERC under the Federal Power Act per day, per violation, for certain violations.

No definition available.

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

Number of electric utilities ordered by the Maryland Public Service Commission to enter into long-term contracts to support construction of new electric generating facilities.

No definition available.

Name:	ppl_NumberElectricUtilitiesOrderedToEnterIntoLongTermContracts
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of claims alleging wrong doing for prior periods spot market bilateral sales of power in Pacific Northwest that were unsettled at period end.

No definition available.

Name:	ppl_NumberOfClaimsRemainingAgainstCompanyForSpotMarketBilateralSales
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of hydroelectric facilities sold by PPL Montana.

No definition available.

Name:	ppl_NumberOfFullyOwnedHydroelectricFacilitiesSold
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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

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

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

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

Frequency (in years), after initial filing, that the company is required to respond to the FERC with market analysis information after implementing market-based rates.

No definition available.

Name:	ppl_SubsequentFrequencyRequiredToRespondToInfoRequest
Namespace Prefix:	ppl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (a)

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fifth fiscal year following the latest fiscal year.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

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Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the four fiscal year following the latest fiscal year.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third fiscal year following the latest fiscal year.

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Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing after the fifth fiscal year following the latest fiscal year.

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Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems
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The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	dei_LegalEntityAxis=ppl_KentuckyUtilitiesCoMember
Namespace Prefix:
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Name:	dei_LegalEntityAxis=ppl_LGAndEAndKUEnergyLLCMember
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Data Type:	na
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Name:	dei_LegalEntityAxis=ppl_LouisvilleGasAndElectricCoMember
Namespace Prefix:
Data Type:	na
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Name:	dei_LegalEntityAxis=ppl_PplElectricUtilitiesCorpMember
Namespace Prefix:
Data Type:	na
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Name:	dei_LegalEntityAxis=ppl_PplEnergySupplyLLCMember
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