XML 156 R92.htm IDEA: XBRL DOCUMENT
v3.25.4

Fair Value Measurements (Assets and Liabilities Measured on Recurring Basis Table) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024
Recurring [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | $ 1,071 | $ 306
Restricted cash and cash equivalents | 15 | 33
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 1,086 | 339
Money market fund | 1 | 1
Commingled debt fund measured at NAV | 5 | 10
Commingled equity fund measured at NAV | 5 | 8
Total special use funds | 11 | 19
Gas Purchase Contract, Fair Value Disclosure | 6 | 9
Total Assets | 1,103 | 367
Interest rate swaps | 5 | 3
Gas contracts, Liability | 10 | 13
Liability value | 15 | 16
Recurring [Member] | PPL Electric Utilities Corp [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 30 | 24
Total Assets | 30 | 24
Recurring [Member] | LOUISVILLE GAS And ELECTRIC CO [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 162 | 8
Restricted cash and cash equivalents | 7 | 16
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 169 | 24
Total Assets | 169 | 24
Interest rate swaps | 5 | 3
Liability value | 5 | 3
Recurring [Member] | Kentucky Utilities Co [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 10 | 13
Restricted cash and cash equivalents | 7 | 16
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 17 | 29
Total Assets | 17 | 29
Recurring [Member] | Level 1 [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 1,071 | 306
Restricted cash and cash equivalents | 15 | 33
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 1,086 | 339
Money market fund | 1 | 1
Total special use funds | 1 | 1
Gas Purchase Contract, Fair Value Disclosure | 0 | 0
Total Assets | 1,087 | 340
Interest rate swaps | 0 | 0
Gas contracts, Liability | 0 | 0
Liability value | 0 | 0
Recurring [Member] | Level 1 [Member] | PPL Electric Utilities Corp [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 30 | 24
Total Assets | 30 | 24
Recurring [Member] | Level 1 [Member] | LOUISVILLE GAS And ELECTRIC CO [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 162 | 8
Restricted cash and cash equivalents | 7 | 16
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 169 | 24
Total Assets | 169 | 24
Interest rate swaps | 0 | 0
Liability value | 0 | 0
Recurring [Member] | Level 1 [Member] | Kentucky Utilities Co [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 10 | 13
Restricted cash and cash equivalents | 7 | 16
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 17 | 29
Total Assets | 17 | 29
Recurring [Member] | Level 2 [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Restricted cash and cash equivalents | 0 | 0
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 0 | 0
Money market fund | 0 | 0
Total special use funds | 0 | 0
Gas Purchase Contract, Fair Value Disclosure | 2 | 4
Total Assets | 2 | 4
Interest rate swaps | 5 | 3
Gas contracts, Liability | 6 | 10
Liability value | 11 | 13
Recurring [Member] | Level 2 [Member] | PPL Electric Utilities Corp [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Total Assets | 0 | 0
Recurring [Member] | Level 2 [Member] | LOUISVILLE GAS And ELECTRIC CO [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Restricted cash and cash equivalents | 0 | 0
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 0 | 0
Total Assets | 0 | 0
Interest rate swaps | 5 | 3
Liability value | 5 | 3
Recurring [Member] | Level 2 [Member] | Kentucky Utilities Co [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Restricted cash and cash equivalents | 0 | 0
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 0 | 0
Total Assets | 0 | 0
Recurring [Member] | Level 3 [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Restricted cash and cash equivalents | 0 | 0
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 0 | 0
Money market fund | 0 | 0
Total special use funds | 0 | 0
Gas Purchase Contract, Fair Value Disclosure | 4 | 5
Total Assets | 4 | 5
Interest rate swaps | 0 | 0
Gas contracts, Liability | 4 | 3
Liability value | 4 | 3
Recurring [Member] | Level 3 [Member] | Gas Contracts |  |
Price risk management liabilities: |  |
Gas Contracts, Liability, Purchases | (2) |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | 0 | 2
Recurring [Member] | Level 3 [Member] | PPL Electric Utilities Corp [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Total Assets | 0 | 0
Recurring [Member] | Level 3 [Member] | LOUISVILLE GAS And ELECTRIC CO [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Restricted cash and cash equivalents | 0 | 0
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 0 | 0
Total Assets | 0 | 0
Interest rate swaps | 0 | 0
Liability value | 0 | 0
Recurring [Member] | Level 3 [Member] | Kentucky Utilities Co [Member] |  |
Price risk management liabilities: |  |
Cash and cash equivalents | 0 | 0
Restricted cash and cash equivalents | 0 | 0
Total Cash, Cash Equivalents and Restricted Cash, Fair Value | 0 | 0
Total Assets | 0 | 0
Carrying Amount [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | 18,894 | 16,503
Carrying Amount [Member] | PPL Electric Utilities Corp [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | 5,707 | 5,214
Carrying Amount [Member] | LOUISVILLE GAS And ELECTRIC CO [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | 2,865 | 2,471
Carrying Amount [Member] | Kentucky Utilities Co [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | 3,510 | 3,066
Fair Value [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | 18,488 | 15,562
Fair Value [Member] | PPL Electric Utilities Corp [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | 5,473 | 4,862
Fair Value [Member] | LOUISVILLE GAS And ELECTRIC CO [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | 2,784 | 2,295
Fair Value [Member] | Kentucky Utilities Co [Member] |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Long-term debt | $ 3,304 | $ 2,750

X
- Definition The combined current and noncurrent carrying amounts of special use funds that are limited in use which are invested in money markets. + References No definition available. + Details
Name: | ppl_FairValueAssetMeasuredOnRecurringBasisLimitedToUseMoneyMarket
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The combined current and noncurrent carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. + References No definition available. + Details
Name: | ppl_FairValueAssetsMeasuredOnRecurringBasisRestrictedCashAndCashEquivalents
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The combined current and noncurrent asset amounts that have been measured at their fair value using net asset value as of the measurement date that are invested in commingled debt funds. + References No definition available. + Details
Name: | ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledDebtFund
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The combined current and noncurrent asset amounts that have been measured at their fair value using net asset value as of the measurement date that are invested in commingled equity funds. + References No definition available. + Details
Name: | ppl_FairValueAssetsMeasuredUsingNetAssetValueLimitedToUseCommingledEquityFund
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value in a liability position of Gas contracts for purchase + References No definition available. + Details
Name: | ppl_GasContractsLiability
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total healthcare trust fund assets that are limited in use. + References No definition available. + Details
Name: | ppl_HealthCareTrustFundAssetsLimitedToUse
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Total fair value of cash, cash equivalents and restricted cash as of the period ended. + References No definition available. + Details
Name: | ppl_TotalCashCashEquivalentsAndRestrictedCashFairValue
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-7A Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-22 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-21 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-20 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483444/210-20-55-15 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483466/210-20-50-3 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (c)(2) -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481326/860-20-50-4D + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 10 -SubTopic 10 -Topic 825 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482881/825-10-55-10 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-13 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482881/825-10-55-12 + Details
Name: | us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 + Details
Name: | us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of contract to purchase gas. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E + Details
Name: | us-gaap_GasPurchaseContractFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. + References No definition available. + Details
Name: | us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
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_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: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=ppl_GasContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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: |