| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.21.1 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 886 </ContextCount> |
| <ElementCount> 482 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> true </FootnotesReported> |
| <SegmentCount> 153 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 11 </UnitCount> |
| <MyReports> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 0001001 - Document - Document and Entity Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DocumentandEntityInformation </Role> |
| | | <ShortName> Document and Entity Information </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 1001002 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFINCOMEUnaudited </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 1002003 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnaudited </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 1003004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUnauditedParenthetical </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 1004005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 1005006 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 1006007 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnauditedParenthetical </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 1007008 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnaudited </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 1008009 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUnauditedParenthetical </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 1109103 - Statement - Segment and Related Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/SegmentandRelatedInformation </Role> |
| | | <ShortName> Segment and Related Information </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 1110105 - Statement - Earnings Per Share </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/EarningsPerShare </Role> |
| | | <ShortName> Earnings Per Share </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 1111106 - Statement - Income Taxes </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/IncomeTaxes </Role> |
| | | <ShortName> Income Taxes </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 1112107 - Statement - Utility Rate Regulation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/UtilityRateRegulation </Role> |
| | | <ShortName> Utility Rate Regulation </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 1113108 - Statement - Financing Activities </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FinancingActivities </Role> |
| | | <ShortName> Financing Activities </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 1115111 - Statement - Defined Benefits </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DefinedBenefits </Role> |
| | | <ShortName> Defined Benefits </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 1116112 - Statement - Commitments and Contingencies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CommitmentsandContingencies </Role> |
| | | <ShortName> Commitments and Contingencies </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 1117113 - Statement - Related Party Transactions </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/RelatedPartyTransactions </Role> |
| | | <ShortName> Related Party Transactions </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 1118115 - Statement - Fair Value Measurements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FairValueMeasurements </Role> |
| | | <ShortName> Fair Value Measurements </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 1119116 - Statement - Derivative Instruments and Hedging Activities </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivities </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 1121118 - Statement - Asset Retirement Obligations </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AssetRetirementObligations </Role> |
| | | <ShortName> Asset Retirement Obligations </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 1122119 - Statement - Accumulated Other Comprehensive Income (Loss) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLoss </Role> |
| | | <ShortName> Accumulated Other Comprehensive Income (Loss) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 1314309 - Statement - Acquisitions, Development and Divestitures (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestituresTables </Role> |
| | | <ShortName> Acquisitions, Development and Divestitures (Tables) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 2101101 - Disclosure - Interim Financial Statements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/InterimFinancialStatements </Role> |
| | | <ShortName> Interim Financial Statements </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 2102102 - Disclosure - Summary of Significant Accounting Policies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/SummaryofSignificantAccountingPolicies </Role> |
| | | <ShortName> Summary of Significant Accounting Policies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 2108104 - Disclosure - Revenue from Contracts with Customers </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/RevenuefromContractswithCustomers </Role> |
| | | <ShortName> Revenue from Contracts with Customers </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 2132110 - Disclosure - Acquisitions, Development and Divestitures </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestitures </Role> |
| | | <ShortName> Acquisitions, Development and Divestitures </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 2143114 - Disclosure - Other Income (Expense) - net </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/OtherIncomeExpensenet </Role> |
| | | <ShortName> Other Income (Expense) - net </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 2250204 - Disclosure - Derivative Instruments and Hedging Activities (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesPolicies </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/SummaryofSignificantAccountingPolicies </ParentRole> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 2304301 - Disclosure - Adoption of Accounting Guidance (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AdoptionofAccountingGuidanceTables </Role> |
| | | <ShortName> Adoption of Accounting Guidance (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 2306302 - Disclosure - Segment and Related Information (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/SegmentandRelatedInformationTables </Role> |
| | | <ShortName> Segment and Related Information (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 2310303 - Disclosure - Revenue from Contracts with Customers (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/RevenuefromContractswithCustomersTables </Role> |
| | | <ShortName> Revenue from Contracts with Customers (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/RevenuefromContractswithCustomers </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 2312304 - Disclosure - Earnings Per Share (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/EarningsPerShareTables </Role> |
| | | <ShortName> Earnings Per Share (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 2314305 - Disclosure - Income Taxes (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/IncomeTaxesTables </Role> |
| | | <ShortName> Income Taxes (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 2317306 - Disclosure - Utility Rate Regulation (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/UtilityRateRegulationTables </Role> |
| | | <ShortName> Utility Rate Regulation (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 2322307 - Disclosure - Financing Activities (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FinancingActivitiesTables </Role> |
| | | <ShortName> Financing Activities (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 2335310 - Disclosure - Defined Benefits (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DefinedBenefitsTables </Role> |
| | | <ShortName> Defined Benefits (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 2337311 - Disclosure - Commitments and Contingencies (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CommitmentsandContingenciesTables </Role> |
| | | <ShortName> Commitments and Contingencies (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 2341312 - Disclosure - Related Party Transactions (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/RelatedPartyTransactionsTables </Role> |
| | | <ShortName> Related Party Transactions (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 2344313 - Disclosure - Other Income (Expense) - net (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/OtherIncomeExpensenetTables </Role> |
| | | <ShortName> Other Income (Expense) - net (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/OtherIncomeExpensenet </ParentRole> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 2347314 - Disclosure - Fair Value Measurements (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FairValueMeasurementsTables </Role> |
| | | <ShortName> Fair Value Measurements (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 2351315 - Disclosure - Derivative Instruments and Hedging Activities (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesTables </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 2359316 - Disclosure - Asset Retirement Obligations (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AssetRetirementObligationsTables </Role> |
| | | <ShortName> Asset Retirement Obligations (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 2361317 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossTables </Role> |
| | | <ShortName> Accumulated Other Comprehensive Income (Loss) (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 2405401 - Disclosure - Summary of Significant Accounting Policies (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/SummaryofSignificantAccountingPoliciesDetails </Role> |
| | | <ShortName> Summary of Significant Accounting Policies (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 2407402 - Disclosure - Segment and Related Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/SegmentandRelatedInformationDetails </Role> |
| | | <ShortName> Segment and Related Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/SegmentandRelatedInformationTables </ParentRole> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 2411403 - Disclosure - Revenue from Contracts with Customers (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/RevenuefromContractswithCustomersDetails </Role> |
| | | <ShortName> Revenue from Contracts with Customers (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/RevenuefromContractswithCustomersTables </ParentRole> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 2413404 - Disclosure - Earnings Per Share (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/EarningsPerShareDetails </Role> |
| | | <ShortName> Earnings Per Share (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/EarningsPerShareTables </ParentRole> |
| | | <Position> 47 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R48.htm </HtmlFileName> |
| | | <LongName> 2415405 - Disclosure - Income Taxes (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/IncomeTaxesDetails </Role> |
| | | <ShortName> Income Taxes (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 48 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 2418407 - Disclosure - Utility Rate Regulation - Regulatory Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryAssetsDetails </Role> |
| | | <ShortName> Utility Rate Regulation - Regulatory Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 49 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 2419408 - Disclosure - Utility Rate Regulation - Regulatory Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryLiabilitiesDetails </Role> |
| | | <ShortName> Utility Rate Regulation - Regulatory Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 50 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R51.htm </HtmlFileName> |
| | | <LongName> 2420409 - Disclosure - Utility Rate Regulation - Regulatory Matters (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/UtilityRateRegulationRegulatoryMattersDetails </Role> |
| | | <ShortName> Utility Rate Regulation - Regulatory Matters (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 51 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 2421410 - Disclosure - Utility Rate Regulation - Other (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/UtilityRateRegulationOtherDetails </Role> |
| | | <ShortName> Utility Rate Regulation - Other (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 52 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 2423411 - Disclosure - Financing Activities - Credit Arrangements (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FinancingActivitiesCreditArrangementsDetails </Role> |
| | | <ShortName> Financing Activities - Credit Arrangements (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 53 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 2424412 - Disclosure - Financing Activities - Short-term Debt (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FinancingActivitiesShorttermDebtDetails </Role> |
| | | <ShortName> Financing Activities - Short-term Debt (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 54 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 2425413 - Disclosure - Financing Activities - Long-term Debt (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FinancingActivitiesLongtermDebtDetails </Role> |
| | | <ShortName> Financing Activities - Long-term Debt (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 55 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 2426414 - Disclosure - Financing Activities - Equity Securities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FinancingActivitiesEquitySecuritiesDetails </Role> |
| | | <ShortName> Financing Activities - Equity Securities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 56 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 2427415 - Disclosure - Financing Activities - Distributions (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FinancingActivitiesDistributionsDetails </Role> |
| | | <ShortName> Financing Activities - Distributions (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 57 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R58.htm </HtmlFileName> |
| | | <LongName> 2433418 - Disclosure - Acquisitions, Development and Divestitures - Discontinued Operations (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestituresDiscontinuedOperationsDetails </Role> |
| | | <ShortName> Acquisitions, Development and Divestitures - Discontinued Operations (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 58 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R59.htm </HtmlFileName> |
| | | <LongName> 2434419 - Disclosure - Acquisitions, Development and Divestitures - Development (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AcquisitionsDevelopmentandDivestituresDevelopmentDetails </Role> |
| | | <ShortName> Acquisitions, Development and Divestitures - Development (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 59 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 2436420 - Disclosure - Defined Benefits (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DefinedBenefitsDetails </Role> |
| | | <ShortName> Defined Benefits (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/DefinedBenefitsTables </ParentRole> |
| | | <Position> 60 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R61.htm </HtmlFileName> |
| | | <LongName> 2438421 - Disclosure - Commitments and Contingencies - Legal Matters and Regulatory Issues (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CommitmentsandContingenciesLegalMattersandRegulatoryIssuesDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Legal Matters and Regulatory Issues (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 61 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R62.htm </HtmlFileName> |
| | | <LongName> 2439422 - Disclosure - Commitments and Contingencies - Environmental Matters and Other (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CommitmentsandContingenciesEnvironmentalMattersandOtherDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Environmental Matters and Other (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 62 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R63.htm </HtmlFileName> |
| | | <LongName> 2440423 - Disclosure - Commitments and Contingencies - Guarantees and Other Assurances (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/CommitmentsandContingenciesGuaranteesandOtherAssurancesDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Guarantees and Other Assurances (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 63 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R64.htm </HtmlFileName> |
| | | <LongName> 2442424 - Disclosure - Related Party Transactions (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/RelatedPartyTransactionsDetails </Role> |
| | | <ShortName> Related Party Transactions (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/RelatedPartyTransactionsTables </ParentRole> |
| | | <Position> 64 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R65.htm </HtmlFileName> |
| | | <LongName> 2445425 - Disclosure - Other Income (Expense) - net (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/OtherIncomeExpensenetDetails </Role> |
| | | <ShortName> Other Income (Expense) - net (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/OtherIncomeExpensenetTables </ParentRole> |
| | | <Position> 65 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R66.htm </HtmlFileName> |
| | | <LongName> 2448426 - Disclosure - Fair Value Measurements - Assets and Liabilities Measured on Recurring Basis Table (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredonRecurringBasisTableDetails </Role> |
| | | <ShortName> Fair Value Measurements - Assets and Liabilities Measured on Recurring Basis Table (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 66 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R67.htm </HtmlFileName> |
| | | <LongName> 2449427 - Disclosure - Fair Value Measurements - Financial Instruments Not Recorded at Fair Value (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/FairValueMeasurementsFinancialInstrumentsNotRecordedatFairValueDetails </Role> |
| | | <ShortName> Fair Value Measurements - Financial Instruments Not Recorded at Fair Value (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 67 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R68.htm </HtmlFileName> |
| | | <LongName> 2452428 - Disclosure - Derivative Instruments and Hedging Activities - Intro (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesIntroDetails </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities - Intro (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesTables </ParentRole> |
| | | <Position> 68 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R69.htm </HtmlFileName> |
| | | <LongName> 2453429 - Disclosure - Derivative Instruments and Hedging Activities - Risk Disclosures (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesRiskDisclosuresDetails </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities - Risk Disclosures (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 69 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R70.htm </HtmlFileName> |
| | | <LongName> 2454430 - Disclosure - Derivative Instruments and Hedging Activities - Fair Values (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesFairValuesDetails </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities - Fair Values (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 70 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R71.htm </HtmlFileName> |
| | | <LongName> 2455431 - Disclosure - Derivative Instruments and Hedging Activities - Gains and Losses (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesGainsandLossesDetails </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities - Gains and Losses (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 71 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R72.htm </HtmlFileName> |
| | | <LongName> 2456432 - Disclosure - Derivative Instruments and Hedging Activities - Offsetting Derivative Instruments and Credit Risk-Related Features (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/DerivativeInstrumentsandHedgingActivitiesOffsettingDerivativeInstrumentsandCreditRiskRelatedFeaturesDetails </Role> |
| | | <ShortName> Derivative Instruments and Hedging Activities - Offsetting Derivative Instruments and Credit Risk-Related Features (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 72 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R73.htm </HtmlFileName> |
| | | <LongName> 2460434 - Disclosure - Asset Retirement Obligations (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AssetRetirementObligationsDetails </Role> |
| | | <ShortName> Asset Retirement Obligations (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/AssetRetirementObligationsTables </ParentRole> |
| | | <Position> 73 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R74.htm </HtmlFileName> |
| | | <LongName> 2462435 - Disclosure - Accumulated Other Comprehensive Income (Loss) - After-tax Changes by Component (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossAftertaxChangesbyComponentDetails </Role> |
| | | <ShortName> Accumulated Other Comprehensive Income (Loss) - After-tax Changes by Component (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossTables </ParentRole> |
| | | <Position> 74 </Position> |
| | | </Report> |
| | <Report instance="ppl-20210331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R75.htm </HtmlFileName> |
| | | <LongName> 2463436 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Income (Expense) Effect of Reclassifications (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossIncomeExpenseEffectofReclassificationsDetails </Role> |
| | | <ShortName> Accumulated Other Comprehensive Income (Loss) - Income (Expense) Effect of Reclassifications (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.pplelectric.com/role/AccumulatedOtherComprehensiveIncomeLossTables </ParentRole> |
| | | <Position> 75 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File doctype="10-Q" original="ppl-20210331.htm"> ppl-20210331.htm </File> |
| | <File> exhibit10b-1.htm </File> |
| | <File> exhibit10b-2.htm </File> |
| | <File> exhibit10c.htm </File> |
| | <File> exhibit10d.htm </File> |
| | <File> exhibit2b2.htm </File> |
| | <File> ppl-20210331.xsd </File> |
| | <File> ppl-20210331_cal.xml </File> |
| | <File> ppl-20210331_def.xml </File> |
| | <File> ppl-20210331_lab.xml </File> |
| | <File> ppl-20210331_pre.xml </File> |
| | <File> ppl-3312021_ex31a.htm </File> |
| | <File> ppl-3312021_ex31b.htm </File> |
| | <File> ppl-3312021_ex31c.htm </File> |
| | <File> ppl-3312021_ex31d.htm </File> |
| | <File> ppl-3312021_ex31e.htm </File> |
| | <File> ppl-3312021_ex31f.htm </File> |
| | <File> ppl-3312021_ex31g.htm </File> |
| | <File> ppl-3312021_ex31h.htm </File> |
| | <File> ppl-3312021_ex31i.htm </File> |
| | <File> ppl-3312021_ex31j.htm </File> |
| | <File> ppl-3312021_ex32a.htm </File> |
| | <File> ppl-3312021_ex32b.htm </File> |
| | <File> ppl-3312021_ex32c.htm </File> |
| | <File> ppl-3312021_ex32d.htm </File> |
| | <File> ppl-3312021_ex32e.htm </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies> |
| | <BaseTaxonomy> http://xbrl.sec.gov/country/2020-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://fasb.org/us-gaap/2020-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://fasb.org/srt/2020-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://xbrl.sec.gov/dei/2020-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://xbrl.sec.gov/currency/2020-01-31 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |