Asset Retirement Obligations (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	$ 158
Accretion	4
New Obligation s Incurred	9
Changes in estimated timing or cost	0
Obligations settled	(10)
Balance at End of Period	161
Louisville Gas And Electric Co [Member]
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	85
Accretion	2
New Obligation s Incurred	3
Changes in estimated timing or cost	1
Obligations settled	(6)
Balance at End of Period	85
Kentucky Utilities Co [Member]
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	66
Accretion	2
New Obligation s Incurred	6
Changes in estimated timing or cost	(1)
Obligations settled	(4)
Balance at End of Period	$ 69