v3.26.1
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
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 332 1,071
Restricted Cash, Current 42 1
Cash, Cash Equivalents and Restricted Cash 374 1,072
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 33 30
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 11 162
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 $ 10