Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2023

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

The changes in the carrying amounts of AROs were as follows:

	PPL				LG&E				KU
	2023		2022		2023		2022		2023		2022
ARO at beginning of period	$	177	$	189	$	86	$	84	$	82	$	105
Acquisition of RIE	—		10		—		—		—		—
Accretion	9		6		4		3		5		3
Obligations incurred	2		2		1		2		1		—
Changes in estimated timing or cost	15		15		11		12		6		4
Obligations settled	(39)		(45)		(11)		(15)		(28)		(30)
Other	(6)		—		(6)		—		—		—
ARO at end of period	$	158	$	177	$	85	$	86	$	66	$	82

Louisville Gas And Electric Co [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

The changes in the carrying amounts of AROs were as follows:

	PPL				LG&E				KU
	2023		2022		2023		2022		2023		2022
ARO at beginning of period	$	177	$	189	$	86	$	84	$	82	$	105
Acquisition of RIE	—		10		—		—		—		—
Accretion	9		6		4		3		5		3
Obligations incurred	2		2		1		2		1		—
Changes in estimated timing or cost	15		15		11		12		6		4
Obligations settled	(39)		(45)		(11)		(15)		(28)		(30)
Other	(6)		—		(6)		—		—		—
ARO at end of period	$	158	$	177	$	85	$	86	$	66	$	82

Kentucky Utilities Co [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

The changes in the carrying amounts of AROs were as follows:

	PPL				LG&E				KU
	2023		2022		2023		2022		2023		2022
ARO at beginning of period	$	177	$	189	$	86	$	84	$	82	$	105
Acquisition of RIE	—		10		—		—		—		—
Accretion	9		6		4		3		5		3
Obligations incurred	2		2		1		2		1		—
Changes in estimated timing or cost	15		15		11		12		6		4
Obligations settled	(39)		(45)		(11)		(15)		(28)		(30)
Other	(6)		—		(6)		—		—		—
ARO at end of period	$	158	$	177	$	85	$	86	$	66	$	82