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
Namespace Prefix:	ppl_
Data Type:	num:lengthItemType
Balance Type:	na
Period Type:	duration

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

No definition available.

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

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

No definition available.

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

The number of coal-fired generating units retired at the Cane Run plant.

No definition available.

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

No definition available.

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

No definition available.

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

Name:	ppl_ByCompanyAxis=ppl_LouisvilleGasAndElectricCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

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

Commitments and Contingencies (Energy Purchases, Other Commitments, Legal Matters and Regulatory Issues) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015 Integer	Mar. 31, 2015 Integer	Jun. 30, 2015 USD ($) Integer mi
Regulatory Issues - Electric - Reliability Standards (Numeric) [Abstract]
Maximum per day penalties for reliability violations \| $			$ 1
LGE [Member]
Legal Matters - Cane Run Environmental Claims (Numeric) [Abstract]
Number of residents that filed class action suit			6
Number of miles within plant that would include a class of residents \| mi			4
Number of remaining unresolved Clean Air Act violation claims after July 2014 court ruling			1
Generating units retired at the Cane Run plant	2	1
LG And E And KU Energy LLC [Member] \| LGE [Member]
Legal Matters - Cane Run Environmental Claims (Numeric) [Abstract]
Number of residents that filed class action suit			6
Number of miles within plant that would include a class of residents \| mi			4
Number of remaining unresolved Clean Air Act violation claims after July 2014 court ruling			1
Generating units retired at the Cane Run plant	2	1
Louisville Gas And Electric Co [Member]
Legal Matters - Cane Run Environmental Claims (Numeric) [Abstract]
Number of residents that filed class action suit			6
Number of miles within plant that would include a class of residents \| mi			4
Number of remaining unresolved Clean Air Act violation claims after July 2014 court ruling			1
Generating units retired at the Cane Run plant	2	1