Asset Retirement Obligations

6 Months Ended

Jun. 30, 2016

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

Asset Retirement Obligations

(PPL, LKE, LG&E and KU)

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

	PPL			LKE			LG&E			KU
Balance at December 31, 2015	$	586		$	535		$	175		$	360
Accretion	13			12			4			8
Effect of foreign currency exchange rates	(2		)	—			—			—
Obligations settled	(8		)	(8		)	(6		)	(2		)
Balance at June 30, 2016	$	589		$	539		$	173		$	366

LKE's, LG&E's and KU's ARO liabilities are primarily related to CCR closure costs. See Note 10 for information on the final CCR rule and Note 6 for information on the rate recovery applications with the KPSC. LG&E's and KU's accretion and ARO-related depreciation expense are recorded as a regulatory asset, such that there is no net earnings impact.

LG And E And KU Energy LLC [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

Asset Retirement Obligations

(PPL, LKE, LG&E and KU)

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

	PPL			LKE			LG&E			KU
Balance at December 31, 2015	$	586		$	535		$	175		$	360
Accretion	13			12			4			8
Effect of foreign currency exchange rates	(2		)	—			—			—
Obligations settled	(8		)	(8		)	(6		)	(2		)
Balance at June 30, 2016	$	589		$	539		$	173		$	366

LKE's, LG&E's and KU's ARO liabilities are primarily related to CCR closure costs. See Note 10 for information on the final CCR rule and Note 6 for information on the rate recovery applications with the KPSC. LG&E's and KU's accretion and ARO-related depreciation expense are recorded as a regulatory asset, such that there is no net earnings impact.

Louisville Gas And Electric Co [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

Asset Retirement Obligations

(PPL, LKE, LG&E and KU)

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

	PPL			LKE			LG&E			KU
Balance at December 31, 2015	$	586		$	535		$	175		$	360
Accretion	13			12			4			8
Effect of foreign currency exchange rates	(2		)	—			—			—
Obligations settled	(8		)	(8		)	(6		)	(2		)
Balance at June 30, 2016	$	589		$	539		$	173		$	366

LKE's, LG&E's and KU's ARO liabilities are primarily related to CCR closure costs. See Note 10 for information on the final CCR rule and Note 6 for information on the rate recovery applications with the KPSC. LG&E's and KU's accretion and ARO-related depreciation expense are recorded as a regulatory asset, such that there is no net earnings impact.

Kentucky Utilities Co [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

Asset Retirement Obligations

(PPL, LKE, LG&E and KU)

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

	PPL			LKE			LG&E			KU
Balance at December 31, 2015	$	586		$	535		$	175		$	360
Accretion	13			12			4			8
Effect of foreign currency exchange rates	(2		)	—			—			—
Obligations settled	(8		)	(8		)	(6		)	(2		)
Balance at June 30, 2016	$	589		$	539		$	173		$	366

LKE's, LG&E's and KU's ARO liabilities are primarily related to CCR closure costs. See Note 10 for information on the final CCR rule and Note 6 for information on the rate recovery applications with the KPSC. LG&E's and KU's accretion and ARO-related depreciation expense are recorded as a regulatory asset, such that there is no net earnings impact.