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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Summary Of Significant Accounting Policies [Line Items] |  |
Goodwill | $ 2,247 | $ 2,247
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow Statement [Line Items] |  |
Cash and cash equivalents | 276 | 331
Restricted Cash, Current | 45 | 1
Cash, Cash Equivalents and Restricted Cash | 321 | 332
PPL Electric Utilities Corp [Member] |  |
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow Statement [Line Items] |  |
Cash and cash equivalents | 21 | 51
Louisville Gas And Electric Co [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Goodwill | 389 | 389
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow Statement [Line Items] |  |
Cash and cash equivalents | 8 | 18
Kentucky Utilities Co [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Goodwill | 607 | 607
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow Statement [Line Items] |  |
Cash and cash equivalents | $ 12 | $ 14

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