Asset Retirement Obligations (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	$ 158
Accretion	6
New Obligation s Incurred	8
Changes in estimated timing or cost	1
Obligations settled	(15)
Asset Retirement Obligations, Period Change, Miscellaneous	2
Balance at End of Period	160
Louisville Gas And Electric Co [Member]
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	85
Accretion	3
New Obligation s Incurred	3
Changes in estimated timing or cost	1
Obligations settled	(8)
Asset Retirement Obligations, Period Change, Miscellaneous	0
Balance at End of Period	84
Kentucky Utilities Co [Member]
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	66
Accretion	3
New Obligation s Incurred	5
Changes in estimated timing or cost	(1)
Obligations settled	(7)
Asset Retirement Obligations, Period Change, Miscellaneous	0
Balance at End of Period	$ 66