SCHEDULE I - NOTES TO CONDENSED UNCONSOLIDATED FINANCIAL STATEMENTS (Details) (USD $) In Millions, unless otherwise specified
|
12 Months Ended |
Dec. 31, 2014
|
Aggregate maturities of long-term debt (Details) [Abstract] |
|
|
2015 |
$ 1,535us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |
|
After 2019 |
16,960us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive |
|
LKE Guarantee [Member] | Indemnification Guarantee [Member] | Indemnification Of Lease Termination And Other Divestitures [Member] |
|
|
Condensed Unconsolidated Financial Statements [Line Items] |
|
|
Maximum exposure |
301us-gaap_GuaranteeObligationsMaximumExposure / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember |
[1] |
Term of guarantee (in years) |
12 |
|
Expiration date minimum |
2021 |
|
Maximum exposure of guarantee related to terminated lease specific to operational, regulatory and environmental issues |
200ppl_GuaranteeMaximumExposure2021 / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember |
|
Maximum exposure of other guarantees expiring related to a terminated lease |
100ppl_GuaranteeMaximumExposure2023 / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember |
|
Expiration date maximum |
2023 |
|
Charge recorded in discontinued operations relating to certain indemnification, pre-tax |
9us-gaap_LossContingencyLossInPeriod / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember |
|
Charge recorded in discontinued operations relating to certain indemnification, after-tax |
5ppl_LossContingencyLossInPeriodAfterTax / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember |
|
PPL Corp [Member] | PPL Guarantee [Member] | Financial Guarantee [Member] | Guarantee Of Principal And Premium And Interest [Member] |
|
|
Condensed Unconsolidated Financial Statements [Line Items] |
|
|
Maximum exposure |
8,100us-gaap_GuaranteeObligationsMaximumExposure / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByPplCapitalFundingMember / ppl_GuaranteeByEntityAxis = ppl_PplGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_FinancialGuaranteeMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
|
Expiration date |
2073 |
|
LG&E and KU Energy LLC Unconsolidated |
|
|
Aggregate maturities of long-term debt (Details) [Abstract] |
|
|
2015 |
400us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCUnconsolidatedMember |
|
After 2019 |
722us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCUnconsolidatedMember |
|
LG&E and KU Energy LLC Unconsolidated | LKE Guarantee [Member] | Indemnification Guarantee [Member] | Indemnification Of Lease Termination And Other Divestitures [Member] |
|
|
Condensed Unconsolidated Financial Statements [Line Items] |
|
|
Term of guarantee (in years) |
12 |
|
Expiration date minimum |
2021 |
|
Maximum exposure of guarantee related to terminated lease specific to operational, regulatory and environmental issues |
200ppl_GuaranteeMaximumExposure2021 / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCUnconsolidatedMember |
|
Maximum exposure of other guarantees expiring related to a terminated lease |
100ppl_GuaranteeMaximumExposure2023 / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCUnconsolidatedMember |
|
Expiration date maximum |
2023 |
|
Charge recorded in discontinued operations relating to certain indemnification, pre-tax |
9us-gaap_LossContingencyLossInPeriod / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCUnconsolidatedMember |
|
Charge recorded in discontinued operations relating to certain indemnification, after-tax |
$ 5ppl_LossContingencyLossInPeriodAfterTax / ppl_GuaranteeByDescriptionAxis = ppl_IndemnificationsIssuedByLkeMember / ppl_GuaranteeByEntityAxis = ppl_LouisvilleGasAndElectricAndKuEnergyGuaranteeMember / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_IndemnificationGuaranteeMember / dei_LegalEntityAxis = ppl_LGAndEAndKUEnergyLLCUnconsolidatedMember |
|
|
|