<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>1598</ContextCount>
  <ElementCount>865</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>263</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>11</UnitCount>
  <MyReports>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000010001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DocumentandEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>100010002 - Statement - CONSOLIDATED STATEMENTS OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDSTATEMENTSOFINCOME</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>100020003 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>100030004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEParenthetical</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>100040005 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>100050006 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDBALANCESHEETS</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>100060007 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDBALANCESHEETSParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>100070008 - Statement - CONSOLIDATED STATEMENTS OF EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>100080009 - Statement - CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CONSOLIDATEDSTATEMENTSOFEQUITYParenthetical</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>140124058 - Statement - Quarterly Financial Data (Unaudited) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/QuarterlyFinancialDataUnauditedDetails</Role>
      <ShortName>Quarterly Financial Data (Unaudited) (Details)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>210011001 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SummaryofSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>210071002 - Disclosure - Segment and Related Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SegmentandRelatedInformation</Role>
      <ShortName>Segment and Related Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>210111003 - Disclosure - Revenue from Contracts with Customers</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RevenuefromContractswithCustomers</Role>
      <ShortName>Revenue from Contracts with Customers</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>210171004 - Disclosure - Preferred Securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/PreferredSecurities</Role>
      <ShortName>Preferred Securities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>210191005 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/EarningsPerShare</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>210221006 - Disclosure - Income and Other Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/IncomeandOtherTaxes</Role>
      <ShortName>Income and Other Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>210291007 - Disclosure - Utility Rate Regulation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/UtilityRateRegulation</Role>
      <ShortName>Utility Rate Regulation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>210361008 - Disclosure - Financing Activities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FinancingActivities</Role>
      <ShortName>Financing Activities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>210431009 - Disclosure - Acquisitions, Development and Divestitures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AcquisitionsDevelopmentandDivestitures</Role>
      <ShortName>Acquisitions, Development and Divestitures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>210461010 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/Leases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>210501011 - Disclosure - Stock-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/StockBasedCompensation</Role>
      <ShortName>Stock-Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>210531012 - Disclosure - Retirement and Postemployment Benefits</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RetirementandPostemploymentBenefits</Role>
      <ShortName>Retirement and Postemployment Benefits</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>210591013 - Disclosure - Jointly Owned Facilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/JointlyOwnedFacilities</Role>
      <ShortName>Jointly Owned Facilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>210621014 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CommitmentsandContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>210671015 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>210701016 - Disclosure - Other Income (Expense) - net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/OtherIncomeExpensenet</Role>
      <ShortName>Other Income (Expense) - net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>210731017 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>210781018 - Disclosure - Derivative Instruments and Hedging Activities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivities</Role>
      <ShortName>Derivative Instruments and Hedging Activities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>210861019 - Disclosure - Goodwill and Other Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/GoodwillandOtherIntangibleAssets</Role>
      <ShortName>Goodwill and Other Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>210911020 - Disclosure - Asset Retirement Obligations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AssetRetirementObligations</Role>
      <ShortName>Asset Retirement Obligations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>210941021 - Disclosure - Accumulated Other Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AccumulatedOtherComprehensiveIncome</Role>
      <ShortName>Accumulated Other Comprehensive Income</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>210981022 - Disclosure - New Accounting Guidance Pending Adoption</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/NewAccountingGuidancePendingAdoption</Role>
      <ShortName>New Accounting Guidance Pending Adoption</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>220022001 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SummaryofSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://pplweb.com/role/SummaryofSignificantAccountingPolicies</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>220742003 - Disclosure - Fair Value Measurements (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FairValueMeasurementsPolicies</Role>
      <ShortName>Fair Value Measurements (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://pplweb.com/role/SummaryofSignificantAccountingPolicies</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>220792004 - Disclosure - Derivative Instruments and Hedging Activities (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesPolicies</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://pplweb.com/role/SummaryofSignificantAccountingPolicies</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>230033001 - Disclosure - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SummaryofSignificantAccountingPoliciesTables</Role>
      <ShortName>Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/SummaryofSignificantAccountingPolicies</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>230083002 - Disclosure - Segment and Related Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SegmentandRelatedInformationTables</Role>
      <ShortName>Segment and Related Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/SegmentandRelatedInformation</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>230133003 - Disclosure - Revenue from Contracts with Customers (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RevenuefromContractswithCustomersTables</Role>
      <ShortName>Revenue from Contracts with Customers (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/RevenuefromContractswithCustomers</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>230203004 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/EarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/EarningsPerShare</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>230233005 - Disclosure - Income and Other Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/IncomeandOtherTaxesTables</Role>
      <ShortName>Income and Other Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/IncomeandOtherTaxes</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>230303006 - Disclosure - Utility Rate Regulation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/UtilityRateRegulationTables</Role>
      <ShortName>Utility Rate Regulation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/UtilityRateRegulation</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>230373007 - Disclosure - Financing Activities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FinancingActivitiesTables</Role>
      <ShortName>Financing Activities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/FinancingActivities</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>230443008 - Disclosure - Acquisitions, Development and Divestures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AcquisitionsDevelopmentandDivesturesTables</Role>
      <ShortName>Acquisitions, Development and Divestures (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/AcquisitionsDevelopmentandDivestitures</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>230473009 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/LeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/Leases</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>230513010 - Disclosure - Stock-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/StockBasedCompensationTables</Role>
      <ShortName>Stock-Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/StockBasedCompensation</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>230543011 - Disclosure - Retirement and Postemployment Benefits (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RetirementandPostemploymentBenefitsTables</Role>
      <ShortName>Retirement and Postemployment Benefits (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/RetirementandPostemploymentBenefits</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>230603012 - Disclosure - Jointly Owned Utility Facilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/JointlyOwnedUtilityFacilitiesTables</Role>
      <ShortName>Jointly Owned Utility Facilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>230633013 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CommitmentsandContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/CommitmentsandContingencies</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>230683014 - Disclosure - Related Party Transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RelatedPartyTransactionsTables</Role>
      <ShortName>Related Party Transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/RelatedPartyTransactions</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>230713015 - Disclosure - Other Income (Expense) - net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/OtherIncomeExpensenetTables</Role>
      <ShortName>Other Income (Expense) - net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/OtherIncomeExpensenet</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>230753016 - Disclosure - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FairValueMeasurementsTables</Role>
      <ShortName>Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/FairValueMeasurements</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>230803017 - Disclosure - Derivative Instruments and Hedging Activities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesTables</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivities</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>230873018 - Disclosure - Goodwill and Other Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/GoodwillandOtherIntangibleAssetsTables</Role>
      <ShortName>Goodwill and Other Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/GoodwillandOtherIntangibleAssets</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>230923019 - Disclosure - Asset Retirement Obligations (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AssetRetirementObligationsTables</Role>
      <ShortName>Asset Retirement Obligations (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/AssetRetirementObligations</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>230953020 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AccumulatedOtherComprehensiveIncomeLossTables</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://pplweb.com/role/AccumulatedOtherComprehensiveIncome</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>240044001 - Disclosure - Summary of Significant Accounting Policies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SummaryofSignificantAccountingPoliciesDetails</Role>
      <ShortName>Summary of Significant Accounting Policies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/SummaryofSignificantAccountingPoliciesTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>240054002 - Disclosure - Accounting Policies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AccountingPoliciesDetails</Role>
      <ShortName>Accounting Policies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>240064003 - Disclosure - New Accounting Guidance Adopted (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/NewAccountingGuidanceAdoptedDetails</Role>
      <ShortName>New Accounting Guidance Adopted (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>240094004 - Disclosure - Segment and Related Information (Income Statement and Balance Sheet Data) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SegmentandRelatedInformationIncomeStatementandBalanceSheetDataDetails</Role>
      <ShortName>Segment and Related Information (Income Statement and Balance Sheet Data) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/SegmentandRelatedInformationTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>240104005 - Disclosure - Segment and Related Information (Geographic Data) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/SegmentandRelatedInformationGeographicDataDetails</Role>
      <ShortName>Segment and Related Information (Geographic Data) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/SegmentandRelatedInformationTables</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>240144006 - Disclosure - Revenue from Contracts with Customers (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RevenuefromContractswithCustomersDetails</Role>
      <ShortName>Revenue from Contracts with Customers (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/RevenuefromContractswithCustomersTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>240154007 - Disclosure - Revenue, Remaining Performance Obligation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RevenueRemainingPerformanceObligationDetails</Role>
      <ShortName>Revenue, Remaining Performance Obligation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>240164008 - Disclosure - Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DisaggregationofRevenueDetails</Role>
      <ShortName>Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>240184009 - Disclosure - Preferred Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/PreferredSecuritiesDetails</Role>
      <ShortName>Preferred Securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/PreferredSecurities</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>240214010 - Disclosure - Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/EarningsPerShareDetails</Role>
      <ShortName>Earnings Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/EarningsPerShareTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>240244011 - Disclosure - Income and Other Taxes (Tax Reform) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/IncomeandOtherTaxesTaxReformDetails</Role>
      <ShortName>Income and Other Taxes (Tax Reform) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/IncomeandOtherTaxesTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>240254012 - Disclosure - Income and Other Taxes (Deferred Tax Assets and Liabilities and Loss Carryforwards) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/IncomeandOtherTaxesDeferredTaxAssetsandLiabilitiesandLossCarryforwardsDetails</Role>
      <ShortName>Income and Other Taxes (Deferred Tax Assets and Liabilities and Loss Carryforwards) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/IncomeandOtherTaxesTables</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>240264013 - Disclosure - Income and Other Taxes (Credit Carryforwards and Valuation Allowances and Reserves) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/IncomeandOtherTaxesCreditCarryforwardsandValuationAllowancesandReservesDetails</Role>
      <ShortName>Income and Other Taxes (Credit Carryforwards and Valuation Allowances and Reserves) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/IncomeandOtherTaxesTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>240274014 - Disclosure - Income and Other Taxes (Income Tax Expense and Reconciliation of Income Tax Expense) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/IncomeandOtherTaxesIncomeTaxExpenseandReconciliationofIncomeTaxExpenseDetails</Role>
      <ShortName>Income and Other Taxes (Income Tax Expense and Reconciliation of Income Tax Expense) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/IncomeandOtherTaxesTables</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>240284015 - Disclosure - Income and Other Taxes (Unrecognized to End) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/IncomeandOtherTaxesUnrecognizedtoEndDetails</Role>
      <ShortName>Income and Other Taxes (Unrecognized to End) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/IncomeandOtherTaxesTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>240314016 - Disclosure - Utility Rate Regulation (Regulatory Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/UtilityRateRegulationRegulatoryAssetsDetails</Role>
      <ShortName>Utility Rate Regulation (Regulatory Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/UtilityRateRegulationTables</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>240324017 - Disclosure - Utility Rate Regulation (Regulatory Liabilities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/UtilityRateRegulationRegulatoryLiabilitiesDetails</Role>
      <ShortName>Utility Rate Regulation (Regulatory Liabilities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/UtilityRateRegulationTables</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>240334018 - Disclosure - Utility Rate Regulation (Regulatory Assets and Liabilities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/UtilityRateRegulationRegulatoryAssetsandLiabilitiesDetails</Role>
      <ShortName>Utility Rate Regulation (Regulatory Assets and Liabilities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/UtilityRateRegulationTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>240344019 - Disclosure - Utility Rate Regulation (Regulatory Matters) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/UtilityRateRegulationRegulatoryMattersDetails</Role>
      <ShortName>Utility Rate Regulation (Regulatory Matters) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/UtilityRateRegulationTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>240354020 - Disclosure - Utility Rate Regulation (Other) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/UtilityRateRegulationOtherDetails</Role>
      <ShortName>Utility Rate Regulation (Other) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/UtilityRateRegulationTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>240384021 - Disclosure - Financing Activities - Credit Arrangements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FinancingActivitiesCreditArrangementsDetails</Role>
      <ShortName>Financing Activities - Credit Arrangements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>240394022 - Disclosure - Financing Activities - Short-term Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FinancingActivitiesShorttermDebtDetails</Role>
      <ShortName>Financing Activities - Short-term Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>240404023 - Disclosure - Financing Activities - Long-term Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FinancingActivitiesLongtermDebtDetails</Role>
      <ShortName>Financing Activities - Long-term Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>240414024 - Disclosure - Financing Activities Financing Activities- Equity Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FinancingActivitiesFinancingActivitiesEquitySecuritiesDetails</Role>
      <ShortName>Financing Activities Financing Activities- Equity Securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>240424025 - Disclosure - Financing Activities - Distributions and Capital Contributions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FinancingActivitiesDistributionsandCapitalContributionsDetails</Role>
      <ShortName>Financing Activities - Distributions and Capital Contributions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>240454026 - Disclosure - Acquisitions, Development and Divestures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AcquisitionsDevelopmentandDivesturesDetails</Role>
      <ShortName>Acquisitions, Development and Divestures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/AcquisitionsDevelopmentandDivesturesTables</ParentRole>
      <Position>81</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>240484027 - Disclosure - Leases - Lessee (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/LeasesLesseeDetails</Role>
      <ShortName>Leases - Lessee (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>240494028 - Disclosure - Leases Leases - Lessor (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/LeasesLeasesLessorDetails</Role>
      <ShortName>Leases Leases - Lessor (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>240524029 - Disclosure - Stock-Based Compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/StockBasedCompensationDetails</Role>
      <ShortName>Stock-Based Compensation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/StockBasedCompensationTables</ParentRole>
      <Position>84</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>240554030 - Disclosure - Retirement and Postemployment Benefits (Net Period Defined Benefit Costs (Credits) and Other Changes in Plan Assets and Benefit Obligations) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RetirementandPostemploymentBenefitsNetPeriodDefinedBenefitCostsCreditsandOtherChangesinPlanAssetsandBenefitObligationsDetails</Role>
      <ShortName>Retirement and Postemployment Benefits (Net Period Defined Benefit Costs (Credits) and Other Changes in Plan Assets and Benefit Obligations) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/RetirementandPostemploymentBenefitsTables</ParentRole>
      <Position>85</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>240564031 - Disclosure - Retirement and Postemployment Benefits (Weighted-Average Assumptions, Cost Trend Rates and Funded Status) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RetirementandPostemploymentBenefitsWeightedAverageAssumptionsCostTrendRatesandFundedStatusDetails</Role>
      <ShortName>Retirement and Postemployment Benefits (Weighted-Average Assumptions, Cost Trend Rates and Funded Status) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/RetirementandPostemploymentBenefitsTables</ParentRole>
      <Position>86</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>240574032 - Disclosure - Retirement and Postemployment Benefits (Plan Assets and Expected Cash Flows) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RetirementandPostemploymentBenefitsPlanAssetsandExpectedCashFlowsDetails</Role>
      <ShortName>Retirement and Postemployment Benefits (Plan Assets and Expected Cash Flows) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/RetirementandPostemploymentBenefitsTables</ParentRole>
      <Position>87</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>240584033 - Disclosure - Retirement and Postemployment Benefits (Savings Plans and Employee Stock Ownership Plan) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RetirementandPostemploymentBenefitsSavingsPlansandEmployeeStockOwnershipPlanDetails</Role>
      <ShortName>Retirement and Postemployment Benefits (Savings Plans and Employee Stock Ownership Plan) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/RetirementandPostemploymentBenefitsTables</ParentRole>
      <Position>88</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>240614034 - Disclosure - Jointly Owned Facilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/JointlyOwnedFacilitiesDetails</Role>
      <ShortName>Jointly Owned Facilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/JointlyOwnedFacilities</ParentRole>
      <Position>89</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>240644035 - Disclosure - Commitments and Contingencies (Energy Purchases, Energy Sales, Other Commitments and Legal Matters) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CommitmentsandContingenciesEnergyPurchasesEnergySalesOtherCommitmentsandLegalMattersDetails</Role>
      <ShortName>Commitments and Contingencies (Energy Purchases, Energy Sales, Other Commitments and Legal Matters) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/CommitmentsandContingenciesTables</ParentRole>
      <Position>90</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>240654036 - Disclosure - Commitments and Contingencies (Environmental Matter and Other) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CommitmentsandContingenciesEnvironmentalMatterandOtherDetails</Role>
      <ShortName>Commitments and Contingencies (Environmental Matter and Other) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/CommitmentsandContingenciesTables</ParentRole>
      <Position>91</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>240664037 - Disclosure - Commitments and Contingencies (Guarantees and Other Assurances) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/CommitmentsandContingenciesGuaranteesandOtherAssurancesDetails</Role>
      <ShortName>Commitments and Contingencies (Guarantees and Other Assurances) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/CommitmentsandContingenciesTables</ParentRole>
      <Position>92</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>240694038 - Disclosure - Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/RelatedPartyTransactionsDetails</Role>
      <ShortName>Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/RelatedPartyTransactionsTables</ParentRole>
      <Position>93</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>240724039 - Disclosure - Other Income (Expense) - net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/OtherIncomeExpensenetDetails</Role>
      <ShortName>Other Income (Expense) - net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/OtherIncomeExpensenetTables</ParentRole>
      <Position>94</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>240764040 - Disclosure - Fair Value Measurements (Assets and Liabilities Measured on Recurring Basis Table) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredonRecurringBasisTableDetails</Role>
      <ShortName>Fair Value Measurements (Assets and Liabilities Measured on Recurring Basis Table) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/FairValueMeasurementsTables</ParentRole>
      <Position>95</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>240774041 - Disclosure - Fair Value Measurements (Financial Instruments Not Recorded at Fair Value) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/FairValueMeasurementsFinancialInstrumentsNotRecordedatFairValueDetails</Role>
      <ShortName>Fair Value Measurements (Financial Instruments Not Recorded at Fair Value) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/FairValueMeasurementsTables</ParentRole>
      <Position>96</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>240814042 - Disclosure - Derivative Instruments and Hedging Activities (Intro) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesIntroDetails</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Intro) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>97</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>240824043 - Disclosure - Derivative Instruments and Hedging Activities (Risk Disclosures) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesRiskDisclosuresDetails</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Risk Disclosures) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>98</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>240834044 - Disclosure - Derivative Instruments and Hedging Activities (Fair Values) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesFairValuesDetails</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Fair Values) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>99</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>240844045 - Disclosure - Derivative Instruments and Hedging Activities (Gains and Losses) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesGainsandLossesDetails</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Gains and Losses) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>100</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>240854046 - Disclosure - Derivative Instruments and Hedging Activities (Offsetting Derivative Instruments and Credit Risk-Related Features) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesOffsettingDerivativeInstrumentsandCreditRiskRelatedFeaturesDetails</Role>
      <ShortName>Derivative Instruments and Hedging Activities (Offsetting Derivative Instruments and Credit Risk-Related Features) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/DerivativeInstrumentsandHedgingActivitiesTables</ParentRole>
      <Position>101</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>240884047 - Disclosure - Goodwill and Other Intangible Assets (Goodwill) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/GoodwillandOtherIntangibleAssetsGoodwillDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets (Goodwill) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/GoodwillandOtherIntangibleAssetsTables</ParentRole>
      <Position>102</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>240894048 - Disclosure - Goodwill and Other Intangible Assets (Other Intangibles - Finite-Lived) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/GoodwillandOtherIntangibleAssetsOtherIntangiblesFiniteLivedDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets (Other Intangibles - Finite-Lived) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/GoodwillandOtherIntangibleAssetsTables</ParentRole>
      <Position>103</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>240904049 - Disclosure - Goodwill and Other Intangible Assets (Other Intangibles - Indefinite-Lived) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/GoodwillandOtherIntangibleAssetsOtherIntangiblesIndefiniteLivedDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets (Other Intangibles - Indefinite-Lived) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/GoodwillandOtherIntangibleAssetsTables</ParentRole>
      <Position>104</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>240934050 - Disclosure - Asset Retirement Obligations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AssetRetirementObligationsDetails</Role>
      <ShortName>Asset Retirement Obligations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/AssetRetirementObligationsTables</ParentRole>
      <Position>105</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>240964051 - Disclosure - Accumulated Other Comprehensive Income (Loss) (After-tax Changes by Component) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AccumulatedOtherComprehensiveIncomeLossAftertaxChangesbyComponentDetails</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) (After-tax Changes by Component) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/AccumulatedOtherComprehensiveIncomeLossTables</ParentRole>
      <Position>106</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>240974052 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Income (Expense) Effect of Reclassifications) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/AccumulatedOtherComprehensiveIncomeLossIncomeExpenseEffectofReclassificationsDetails</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) (Income (Expense) Effect of Reclassifications) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://pplweb.com/role/AccumulatedOtherComprehensiveIncomeLossTables</ParentRole>
      <Position>107</Position>
    </Report>
    <Report instance="ppl-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>241004053 - Disclosure - New Accounting Guidance Pending Adoption New Accounting Guidance Pending Adoption (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://pplweb.com/role/NewAccountingGuidancePendingAdoptionNewAccountingGuidancePendingAdoptionDetails</Role>
      <ShortName>New Accounting Guidance Pending Adoption New Accounting Guidance Pending Adoption (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>108</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-K" original="ppl-20211231.htm">ppl-20211231.htm</File>
    <File>exhibit10a-8.htm</File>
    <File>exhibit10dd-1.htm</File>
    <File>exhibit10dd-2.htm</File>
    <File>exhibit10ee.htm</File>
    <File>exhibit10ff.htm</File>
    <File>exhibit10g-2.htm</File>
    <File>exhibit10gg.htm</File>
    <File>exhibit10n-9.htm</File>
    <File>ppl-12312021ex21.htm</File>
    <File>ppl-12312021ex23a.htm</File>
    <File>ppl-12312021ex23b.htm</File>
    <File>ppl-12312021ex23c.htm</File>
    <File>ppl-12312021ex23d.htm</File>
    <File>ppl-12312021ex24.htm</File>
    <File>ppl-12312021ex31a.htm</File>
    <File>ppl-12312021ex31b.htm</File>
    <File>ppl-12312021ex31c.htm</File>
    <File>ppl-12312021ex31d.htm</File>
    <File>ppl-12312021ex31e.htm</File>
    <File>ppl-12312021ex31f.htm</File>
    <File>ppl-12312021ex31g.htm</File>
    <File>ppl-12312021ex31h.htm</File>
    <File>ppl-12312021ex32a.htm</File>
    <File>ppl-12312021ex32b.htm</File>
    <File>ppl-12312021ex32c.htm</File>
    <File>ppl-12312021ex32d.htm</File>
    <File>ppl-12312021ex99a.htm</File>
    <File>ppl-20211231.xsd</File>
    <File>ppl-20211231_cal.xml</File>
    <File>ppl-20211231_def.xml</File>
    <File>ppl-20211231_lab.xml</File>
    <File>ppl-20211231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="4263">http://fasb.org/us-gaap/2021-01-31</BaseTaxonomy>
    <BaseTaxonomy items="116">http://xbrl.sec.gov/dei/2021q4</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
