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

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
Namespace Prefix:	ppl_
Data Type:	xbrli:stringItemType
Balance Type:	na
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

Number of competitive solicitations completed to date related to the Public Utility Commission approved purchase plan for provider of last resort supply for the period June 2013 through May 2015.

No definition available.

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

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

Total number of competitive solicitations related to the Public Utility Commission approved purchase plan for provider of last resort supply for the period June 2013 through May 2015.

No definition available.

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

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

Name:	ppl_LegalMattersMontanaHydroelectricLitigationNumericAbstract
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
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 total amount of 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:	instant

The number of 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

Name:	ppl_RegulatoryIssuesElectricReliabilityStandardsNumericAbstract
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

Amount of compensation awarded in 2008 by the Montana District Court regarding the company's use of navigable riverbeds for periods 2000 to 2006.

No definition available.

Name:	ppl_Through20002006CompensationAwardedForLeasePaymentUnderHydroElectricLitigationForRiverbedUse
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

This element represents the gross amount awarded, to be received by, or to be remitted to the entity in settlement of litigation occurring during the period.

No definition available.

Name:	us-gaap_LitigationSettlementGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

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