New Accounting Guidance Adopted (Details) $ in Millions	Dec. 31, 2024 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of Use Asset	$ 0
Lease Liability - Current	0
Lease Liability - Noncurrent	0
Louisville Gas And Electric Co [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of Use Asset
Lease Liability - Current
Lease Liability - Noncurrent
Kentucky Utilities Co [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of Use Asset
Lease Liability - Current
Lease Liability - Noncurrent