Jointly Owned Facilities (Details) (USD $) In Millions, unless otherwise specified
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12 Months Ended |
Dec. 31, 2014
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Dec. 31, 2013
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Jointly Owned Facilities [Line Items] |
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Percentage of interest by Northwestern in Colstrip Unit 4 |
30.00%ppl_PercentageOfInterestByNorthWesternInColstripUnit4 |
30.00%ppl_PercentageOfInterestByNorthWesternInColstripUnit4 |
Proportionate share by each party of operating and construction costs regarding Colstrip Unit 3 or 4 |
15.00%ppl_ProportionateShareByEachPartyOfOperatingAndConstructionCostsRegardingColstripUnit3Or4 |
15.00%ppl_ProportionateShareByEachPartyOfOperatingAndConstructionCostsRegardingColstripUnit3Or4 |
Susquehanna Nuclear Generation Plant [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
90.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
90.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
Electric plant |
4,746us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
4,686us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
Accumulated depreciation |
3,591us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
3,545us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
Construction work in progress |
117us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
76us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember |
Conemaugh Generation Plant [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
16.25%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
16.25%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
Electric plant |
330us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
247us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
Accumulated depreciation |
141us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
131us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
Construction work in progress |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
63us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember |
Keystone Generation Plant [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
12.34%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
12.34%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
Electric plant |
213us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
207us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
Accumulated depreciation |
102us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
91us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
Construction work in progress |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember |
Trimble County Units 1 and 2 Generation Plant [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
Electric plant |
1,311us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
1,288us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
Accumulated depreciation |
173us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
144us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
Construction work in progress |
91us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
54us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnit1And2GeneratingPlantMember |
Merrill Creek Reservoir [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
8.37%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember |
8.37%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember |
Other property |
22us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfOtherAssets / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember |
22us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfOtherAssets / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember |
Accumulated depreciation |
15us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember |
16us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember |
Colstrip Units 1 and 2 [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
50.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitOneAndTwoMember |
50.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitOneAndTwoMember |
Colstrip Unit 3 [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
30.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitThreeMember |
30.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitThreeMember |
PPL Energy Supply LLC [Member] |
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Jointly Owned Facilities [Line Items] |
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Percentage of interest by Northwestern in Colstrip Unit 4 |
30.00%ppl_PercentageOfInterestByNorthWesternInColstripUnit4 / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
30.00%ppl_PercentageOfInterestByNorthWesternInColstripUnit4 / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Proportionate share by each party of operating and construction costs regarding Colstrip Unit 3 or 4 |
15.00%ppl_ProportionateShareByEachPartyOfOperatingAndConstructionCostsRegardingColstripUnit3Or4 / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
15.00%ppl_ProportionateShareByEachPartyOfOperatingAndConstructionCostsRegardingColstripUnit3Or4 / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
PPL Energy Supply LLC [Member] | Susquehanna Nuclear Generation Plant [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
90.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
90.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Electric plant |
4,746us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
4,686us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Accumulated depreciation |
3,591us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
3,545us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Construction work in progress |
117us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
76us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = us-gaap_JointlyOwnedNuclearPowerPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
PPL Energy Supply LLC [Member] | Conemaugh Generation Plant [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
16.25%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
16.25%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Electric plant |
330us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
247us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Accumulated depreciation |
141us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
131us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Construction work in progress |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
63us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedConemaughGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
PPL Energy Supply LLC [Member] | Keystone Generation Plant [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
12.34%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
12.34%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Electric plant |
213us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
207us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Accumulated depreciation |
102us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
91us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Construction work in progress |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedKeystoneGeneratingPlantMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
PPL Energy Supply LLC [Member] | Merrill Creek Reservoir [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
8.37%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
8.37%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Other property |
22us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfOtherAssets / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
22us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfOtherAssets / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
Accumulated depreciation |
15us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
16us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedMerrillCreekReservoirMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
PPL Energy Supply LLC [Member] | Colstrip Units 1 and 2 [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
50.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitOneAndTwoMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
50.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitOneAndTwoMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
PPL Energy Supply LLC [Member] | Colstrip Unit 3 [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
30.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitThreeMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
30.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_ColstripUnitThreeMember / dei_LegalEntityAxis = ppl_PplEnergySupplyLLCMember |
LG And E And KU Energy LLC [Member] | Trimble County Unit 1 [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
Electric plant |
309us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
308us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
Accumulated depreciation |
51us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
42us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
Construction work in progress |
59us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
18us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
LG And E And KU Energy LLC [Member] | Trimble County Unit 2 [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
Electric plant |
1,002us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
980us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
Accumulated depreciation |
122us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
102us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
Construction work in progress |
32us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
36us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCMember |
Louisville Gas And Electric Co [Member] | E W Brown Units 6 And 7 [Member] |
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Jointly Owned Facilities [Line Items] |
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Ownership interest |
38.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
38.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Electric plant |
40us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
40us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Accumulated depreciation |
10us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
7us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Construction work in progress |
|
1us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Louisville Gas And Electric Co [Member] | Paddys Run Unit 13 And E W Brown Unit 5 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
53.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
53.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Electric plant |
47us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
46us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Accumulated depreciation |
7us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
5us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Construction work in progress |
|
1us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Louisville Gas And Electric Co [Member] | Trimble County Unit 1 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
75.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Electric plant |
309us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
308us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Accumulated depreciation |
51us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
42us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Construction work in progress |
59us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
18us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitOneMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Louisville Gas And Electric Co [Member] | Trimble County Unit 2 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
14.25%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
14.25%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Electric plant |
205us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
200us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Accumulated depreciation |
23us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
19us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Construction work in progress |
15us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
14us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Louisville Gas And Electric Co [Member] | Trimble County Units 5 And 6 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
29.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
29.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Electric plant |
29us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
29us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Accumulated depreciation |
5us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
3us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Louisville Gas And Electric Co [Member] | Trimble County Units 7 Through 10 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
37.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
37.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Electric plant |
70us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
69us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Accumulated depreciation |
11us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
7us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Construction work in progress |
|
1us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Louisville Gas And Electric Co [Member] | Cane Run Unit 7 Combined Cycle Gas Turbine [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
22.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
22.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Construction work in progress |
113us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
91us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_LouisvilleGasAndElectricCoMember |
Kentucky Utilities Co [Member] | E W Brown Units 6 And 7 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
62.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
62.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Electric plant |
65us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
64us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Accumulated depreciation |
15us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
11us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Construction work in progress |
1us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedEWBrownUnitsSixAndSevenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Kentucky Utilities Co [Member] | Paddys Run Unit 13 And E W Brown Unit 5 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
47.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
47.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Electric plant |
42us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
42us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Accumulated depreciation |
6us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
4us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Construction work in progress |
|
1us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedPaddysRunUnitThirteenAndEWBrownUnitFiveMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Kentucky Utilities Co [Member] | Trimble County Unit 2 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
60.75%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
60.75%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Electric plant |
797us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
780us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Accumulated depreciation |
98us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
83us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Construction work in progress |
17us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
22us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitTwoMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Kentucky Utilities Co [Member] | Trimble County Units 5 And 6 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
71.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
71.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Electric plant |
70us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
70us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Accumulated depreciation |
11us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
8us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsFiveAndSixMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Kentucky Utilities Co [Member] | Trimble County Units 7 Through 10 [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
63.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
63.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Electric plant |
120us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
118us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Accumulated depreciation |
18us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
12us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Construction work in progress |
1us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
2us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedTrimbleCountyUnitsSevenThroughTenMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Kentucky Utilities Co [Member] | Cane Run Unit 7 Combined Cycle Gas Turbine [Member] |
|
|
Jointly Owned Facilities [Line Items] |
|
|
Ownership interest |
78.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
78.00%us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
Construction work in progress |
403us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |
317us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress / us-gaap_JointlyOwnedUtilityPlantAxis = ppl_JointlyOwnedCaneRunUnitSevenCombinedCycleGasTurbineMember / dei_LegalEntityAxis = ppl_KentuckyUtilitiesCoMember |