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Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
PPL Electric Utilities Corp [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes receivable from affiliate | $ 296 |  | $ 499
PPL Electric Utilities Corp [Member] | PPL Services [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | 61 | $ 10 |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
VEBA Funds Receivable |  |  | 11
PPL Electric Utilities Corp [Member] | PPL EU Services [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | 0 | 50 |
PPL Electric Utilities Corp [Member] | PPL Energy Funding [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany note with affiliate maximum borrowing capacity | 1,200 |  |
Notes receivable from affiliate | 296 |  | 499
PPL Electric Utilities Corp [Member] | Accounts receivable from affiliates [Member] | PPL Services [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
VEBA Funds Receivable | 8 |  |
Louisville Gas And Electric Co [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes receivable from affiliate | 4 |  | 0
Notes Payable, Related Parties, Current | 0 |  | 324
Louisville Gas And Electric Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Maximum Borrowing Capacity | 325 |  |
Notes Payable, Related Parties, Current | 0 |  |
Intercompany Borrowings Outstanding | 324 |  |
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | 39 | 42 |
Kentucky Utilities Co [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Notes Payable, Related Parties, Current | 4 |  | $ 294
Intercompany Borrowings Outstanding | 4 |  |
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |
Intercompany Money Pool Agreement Maximum Borrowing Capacity | 300 |  |
Intercompany Borrowings Outstanding | 294 |  |
Kentucky Utilities Co [Member] | LKS [Member] |  |  |
Support Costs (Details) [Abstract] |  |  |
Related Party Transaction, Amounts of Transaction | $ 44 | $ 44 |

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- Definition Maximum borrowing capacity under the money pool agreement with an affiliate of the reporting entity. + References No definition available. + Details
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- Definition Intercompany receivable related to IRS private letter ruling permitting a transfer of excess funds from the PPL Bargaining Unite Retiree Health Plan VEBA to a new subaccount within the VEBA to be used to pay medical claims of active bargaining unit employees + References No definition available. + Details
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- Definition The amount for notes payable (written promise to pay), due to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)(5)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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