XML 87 R65.htm IDEA: XBRL DOCUMENT
v3.20.2

Fair Value Measurements - Financial Instruments Not Recorded at Fair Value (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Carrying Amount [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | $ 22,768 | $ 21,893
Fair Value [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 28,085 | 25,481
PPL Electric Utilities Corp [Member] | Carrying Amount [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 3,587 | 3,985
PPL Electric Utilities Corp [Member] | Fair Value [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 5,030 | 4,589
LG And E And KU Energy LLC [Member] | Carrying Amount [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 6,073 | 6,002
LG And E And KU Energy LLC [Member] | Fair Value [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 7,588 | 6,766
Louisville Gas And Electric Co [Member] | Carrying Amount [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 2,006 | 2,005
Louisville Gas And Electric Co [Member] | Fair Value [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 2,490 | 2,278
Kentucky Utilities Co [Member] | Carrying Amount [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | 2,617 | 2,623
Kentucky Utilities Co [Member] | Fair Value [Member] |  |
Fair Value of Financial Instruments Not Recorded at Fair Value - Other |  |
Debt Instrument, Fair Value Disclosure | $ 3,310 | $ 3,003

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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