Asset Retirement Obligations (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	$ 177
Accretion	4
New Obligation s Incurred	2
Changes in estimated timing or cost	(1)
Obligations settled	(16)
Asset Retirement Obligations, Period Change, Miscellaneous	(5)
Balance at End of Period	161
Louisville Gas And Electric Co [Member]
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	86
Accretion	2
New Obligation s Incurred	1
Changes in estimated timing or cost	1
Obligations settled	(6)
Asset Retirement Obligations, Period Change, Miscellaneous	(6)
Balance at End of Period	78
Kentucky Utilities Co [Member]
Asset Retirement Obligation [Roll Forward]
Balance at Beginning of Period	82
Accretion	2
New Obligation s Incurred	1
Changes in estimated timing or cost	0
Obligations settled	(10)
Asset Retirement Obligations, Period Change, Miscellaneous	0
Balance at End of Period	$ 75