Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2022

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
	2022		2021		2022		2021		2022		2021
ARO at beginning of period	$	189	$	182	$	84	$	67	$	105	$	115
Acquisition of RIE (a)	10		—		—		—		—		—
Accretion	6		16		3		5		3		11
Obligations incurred	2		—		2		—		—		—
Changes in estimated timing or cost	15		56		12		40		4		16
Obligations settled	(45)		(65)		(15)		(28)		(30)		(37)
ARO at end of period	$	177	$	189	$	86	$	84	$	82	$	105

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
	2022		2021		2022		2021		2022		2021
ARO at beginning of period	$	189	$	182	$	84	$	67	$	105	$	115
Acquisition of RIE (a)	10		—		—		—		—		—
Accretion	6		16		3		5		3		11
Obligations incurred	2		—		2		—		—		—
Changes in estimated timing or cost	15		56		12		40		4		16
Obligations settled	(45)		(65)		(15)		(28)		(30)		(37)
ARO at end of period	$	177	$	189	$	86	$	84	$	82	$	105

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
	2022		2021		2022		2021		2022		2021
ARO at beginning of period	$	189	$	182	$	84	$	67	$	105	$	115
Acquisition of RIE (a)	10		—		—		—		—		—
Accretion	6		16		3		5		3		11
Obligations incurred	2		—		2		—		—		—
Changes in estimated timing or cost	15		56		12		40		4		16
Obligations settled	(45)		(65)		(15)		(28)		(30)		(37)
ARO at end of period	$	177	$	189	$	86	$	84	$	82	$	105