Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2017

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

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

	PPL			LKE			LG&E			KU
Balance at December 31, 2016	$	488		$	433		$	145		$	288
Accretion	5			5			2			3
Obligations settled	(6		)	(6		)	(4		)	(2		)
Balance at March 31, 2017	$	487		$	432		$	143		$	289

LG And E And KU Energy LLC [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

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

	PPL			LKE			LG&E			KU
Balance at December 31, 2016	$	488		$	433		$	145		$	288
Accretion	5			5			2			3
Obligations settled	(6		)	(6		)	(4		)	(2		)
Balance at March 31, 2017	$	487		$	432		$	143		$	289

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			LKE			LG&E			KU
Balance at December 31, 2016	$	488		$	433		$	145		$	288
Accretion	5			5			2			3
Obligations settled	(6		)	(6		)	(4		)	(2		)
Balance at March 31, 2017	$	487		$	432		$	143		$	289

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			LKE			LG&E			KU
Balance at December 31, 2016	$	488		$	433		$	145		$	288
Accretion	5			5			2			3
Obligations settled	(6		)	(6		)	(4		)	(2		)
Balance at March 31, 2017	$	487		$	432		$	143		$	289