XML 143 R74.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Utility Rate Regulation (Regulatory Matters) (Details) - USD ($) $ in Millions |  |  |  |  | 1 Months Ended | 11 Months Ended | 12 Months Ended | 24 Months Ended | 60 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2023 | Dec. 06, 2021 | Nov. 25, 2020 | May 21, 2020 | Aug. 31, 2021 | Nov. 30, 2021 | May 31, 2023 | Dec. 31, 2021 | May 31, 2022 | May 31, 2026
Kentucky Public Service Commission [Member] | Electric And Gas Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Dollar amount requested increase in base rates with anticipated rate case filing |  |  | $ 331 |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 207 |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Bill Credit |  |  | $ 53 |  |  |  |  |  |  |
LGE [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Requested Billing Credit Period |  | 1 year |  |  |  |  |  |  |  |
Stay Out Commitment Period |  | 4 years |  |  |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.425% |  |  |  |  |  |  |  |
Requested return on equity |  |  | 10.00% |  |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  |  |  |  |  | 9.35% |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  | 12 months |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery and Gas Line Tracker |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.35% |  |  |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Gas Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Dollar amount requested increase in base rates with anticipated rate case filing |  |  | $ 30 |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Percentage |  |  | 8.30% |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 23 |  |  |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Electric And Gas Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Bill Credit |  |  | $ 41 |  |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Electric Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Dollar amount requested increase in base rates with anticipated rate case filing |  |  | $ 131 |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Percentage |  |  | 11.60% |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 74 |  |  |  |  |  |  |  |
KU [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Requested Billing Credit Period |  | 1 year |  |  |  |  |  |  |  |
Stay Out Commitment Period |  | 4 years |  |  |  |  |  |  |  |
KU [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.425% |  |  |  |  |  |  |  |
Requested return on equity |  |  | 10.00% |  |  |  |  |  |  |
KU [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.35% |  |  |  |  |  | 9.35% |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  | 12 months |  |
KU [Member] | Kentucky Public Service Commission [Member] | Electric Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Dollar amount requested increase in base rates with anticipated rate case filing |  |  | $ 170 |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Percentage |  |  | 10.40% |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 110 |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Bill Credit |  |  | $ 12 |  |  |  |  |  |  |
PPL Electric Utilities Corp [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  | 11.18% |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Amended Proposed Return On Equity From Complaint | 10.00% |  |  |  |  |  | 9.95% |  | 990.00% |
Regulatory Liability due to ROE Reserve, After Tax |  |  |  |  |  | $ 55 |  |  |  |
PPL Electric Utilities Corp [Member] | Period of 05-21-2020 to 12-31-2020 |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Regulatory Liability due to ROE Reserve, Before Tax |  |  |  |  |  | 28 |  |  |  |
Regulatory Liability due to ROE Reserve, After Tax |  |  |  |  |  | 20 |  |  |  |
PPL Electric Utilities Corp [Member] | Period of 05-21-2020 to 11-30-2021 |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Regulatory Liability due to ROE Reserve, Before Tax |  |  |  |  |  | 73 |  |  |  |
Regulatory Liability due to ROE Reserve, After Tax |  |  |  |  |  | 52 |  |  |  |
PPL Electric Utilities Corp [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Public Utilities, Approved Equity Capital Structure, Percentage |  |  |  |  | 56.00% |  |  |  |  |
PPL Electric Utilities Corp [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  | 11.18% |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Amended Proposed Return On Equity From Complaint | 10.00% |  |  |  |  |  | 9.95% |  | 990.00% |
Regulatory Liability due to ROE Reserve, Before Tax |  |  |  |  |  | 78 |  |  |  |
Regulatory Liability due to ROE Reserve, After Tax |  |  |  |  |  | 55 |  |  |  |
PPL Electric Utilities Corp [Member] | Period of 05-21-2020 to 12-31-2020 |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Regulatory Liability due to ROE Reserve, Before Tax |  |  |  |  |  | 28 |  |  |  |
Regulatory Liability due to ROE Reserve, After Tax |  |  |  |  |  | 20 |  |  |  |
PPL Electric Utilities Corp [Member] | Period of 05-21-2020 to 11-30-2021 |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Regulatory Liability due to ROE Reserve, Before Tax |  |  |  |  |  | 73 |  |  |  |
Regulatory Liability due to ROE Reserve, After Tax |  |  |  |  |  | 52 |  |  |  |
PPL Electric Utilities Corp [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Public Utilities, Approved Equity Capital Structure, Percentage |  |  |  |  | 56.00% |  |  |  |  |
PPL Electric Utilities Corp [Member] | PPL Electric [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Act 129 Recovery Period Under Phase IV Plan |  |  |  |  |  |  |  |  |  | 5 years
PPL Electric Utilities Corp [Member] | PPL Electric Utilities Corp [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Regulatory Liability due to ROE Reserve, Before Tax |  |  |  |  |  | 78 |  |  |  |
PPL Electric Utilities Corp [Member] | PPL Electric Utilities Corp [Member] | Period of 05-21-2020 to 11-30-2021 |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Regulatory Liability due to ROE Reserve, Before Tax |  |  |  |  |  | $ 73 |  |  |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Requested Billing Credit Period |  | 1 year |  |  |  |  |  |  |  |
Stay Out Commitment Period |  | 4 years |  |  |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.425% |  |  |  |  |  |  |  |
Requested return on equity |  |  | 10.00% |  |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  |  |  |  |  | 9.35% |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  | 12 months |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery and Gas Line Tracker |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.35% |  |  |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Gas Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Dollar amount requested increase in base rates with anticipated rate case filing |  |  | $ 30 |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Percentage |  |  | 8.30% |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 23 |  |  |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Electric And Gas Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Bill Credit |  |  | $ 41 |  |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Electric Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Dollar amount requested increase in base rates with anticipated rate case filing |  |  | $ 131 |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Percentage |  |  | 11.60% |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 74 |  |  |  |  |  |  |  |
Kentucky Utilities Co [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Requested Billing Credit Period |  | 1 year |  |  |  |  |  |  |  |
Stay Out Commitment Period |  | 4 years |  |  |  |  |  |  |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.425% |  |  |  |  |  |  |  |
Requested return on equity |  |  | 10.00% |  |  |  |  |  |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Return on equity |  | 9.35% |  |  |  |  |  | 9.35% |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  | 12 months |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | Electric Rates [Member] |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |
Dollar amount requested increase in base rates with anticipated rate case filing |  |  | $ 170 |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Percentage |  |  | 10.40% |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ 110 |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |
Public Utilities, Requested Bill Credit |  |  | $ 12 |  |  |  |  |  |  |

X
- Definition The period over which Act 129 Phase IV Plan costs will be recovered in "PnYnMnDTnHnMnS" format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | ppl_Act129RecoveryPeriodUnderPhaseIVPlan
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amended Proposed Return On Equity From Complaint + References No definition available. + Details
Name: | ppl_AmendedProposedReturnOnEquityFromComplaint
Namespace Prefix: | ppl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Public Utilities, Requested Bill Credit + References No definition available. + Details
Name: | ppl_PublicUtilitiesRequestedBillCredit
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of after tax regulatory liability increase due to return on equity reserve challenge. + References No definition available. + Details
Name: | ppl_RegulatoryLiabilityDueToROEReserveAfterTax
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of before tax regulatory liability increase due to return on equity reserve challenge. + References No definition available. + Details
Name: | ppl_RegulatoryLiabilityDueToROEReserveBeforeTax
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | ppl_RegulatoryMattersFederalMattersFederalEnergyRegulatoryCommissionWholesaleFormulaRatesNumericAbstract
Namespace Prefix: | ppl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ppl_RegulatoryMattersRateCaseProceedingsFederalEnergyRegulatoryCommissionFormulaRatesNumericAbstract
Namespace Prefix: | ppl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Length of billing credit requested to return to customers certain regulatory liabilities and partially mitigate associated rate increases. + References No definition available. + Details
Name: | ppl_RequestedBillingCreditPeriod
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of time in which energy provider will refrain from effective base rate increases, subject to certain exceptions. + References No definition available. + Details
Name: | ppl_StayOutCommitmentPeriod
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of public utility's approved equity to capital, including debt and equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of public utility's approved rate increase (decrease) by regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of public utility's approved return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreasePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of public utility's requested return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_RegulatoryAssetAmortizationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=ppl_KentuckyPublicServiceCommissionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_RatesTypeAxis=ppl_ElectricAndGasRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ByCompanyAxis=ppl_LouisvilleGasAndElectricCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=ppl_EnvironmentalCostRecoveryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ScheduleOfRegulatoryItemsWithSharedCharacteristicsAxis=ppl_EnvironmentalCostRecoveryAndGasLineTrackerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_RatesTypeAxis=ppl_GasRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_RatesTypeAxis=ppl_ElectricRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ByCompanyAxis=ppl_KentuckyUtilitiesCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ByCompanyAxis=ppl_PplElectricUtilitiesCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_PeriodOfROEReserveAxis=ppl_PeriodOf05212020To12312020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_PeriodOfROEReserveAxis=ppl_PeriodOf05212020To11302021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_PplElectricUtilitiesCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ByCompanyAxis=ppl_PplElectricUtilitiesCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_LouisvilleGasAndElectricCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_KentuckyUtilitiesCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |