Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 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
Balance at December 31, 2021	$	189	$	84	$	105
Accretion	4		1		3
Changes in estimated timing or cost	1		1		—
Obligations settled	(13)		(7)		(6)
Balance at March 31, 2022	$	181	$	79	$	102

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
Balance at December 31, 2021	$	189	$	84	$	105
Accretion	4		1		3
Changes in estimated timing or cost	1		1		—
Obligations settled	(13)		(7)		(6)
Balance at March 31, 2022	$	181	$	79	$	102

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
Balance at December 31, 2021	$	189	$	84	$	105
Accretion	4		1		3
Changes in estimated timing or cost	1		1		—
Obligations settled	(13)		(7)		(6)
Balance at March 31, 2022	$	181	$	79	$	102