Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2021

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, 2020	$	182	$	67	$	115
Accretion	12		4		8
Changes in estimated timing or cost	50		34		16
Obligations settled	(43)		(16)		(27)
Balance at September 30, 2021	$	201	$	89	$	112

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, 2020	$	182	$	67	$	115
Accretion	12		4		8
Changes in estimated timing or cost	50		34		16
Obligations settled	(43)		(16)		(27)
Balance at September 30, 2021	$	201	$	89	$	112

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, 2020	$	182	$	67	$	115
Accretion	12		4		8
Changes in estimated timing or cost	50		34		16
Obligations settled	(43)		(16)		(27)
Balance at September 30, 2021	$	201	$	89	$	112