Asset Retirement Obligations

6 Months Ended

Jun. 30, 2012

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

16. Asset Retirement Obligations
(PPL, PPL Energy Supply, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		17		13		3		1		2
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(6)		(5)		(1)		(1)
Balance at June 30, 2012		$	510	$	369	$	120	$	57	$	63

Substantially all of the ARO balances are classified as noncurrent at June 30, 2012 and December 31, 2011.

(PPL, LKE, LG&E and KU)

Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no earnings impact.

(PPL and PPL Energy Supply)

The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $304million and $292 million at June 30, 2012 and December 31, 2011.

Assets in the NDT funds are legally restricted for purposes of settling PPL's and PPL Energy Supply's ARO related to the decommissioning of the PPL Susquehanna nuclearplant. The aggregate fair value of these assets was $681 million and $640 million at June 30, 2012 and December 31, 2011, and is included in "Nuclear plant decommissioning trust funds" on the Balance Sheets. See Notes 13 and 17 for additional information on these assets.

PPL Energy Supply LLC [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

16. Asset Retirement Obligations
(PPL, PPL Energy Supply, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		17		13		3		1		2
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(6)		(5)		(1)		(1)
Balance at June 30, 2012		$	510	$	369	$	120	$	57	$	63

Substantially all of the ARO balances are classified as noncurrent at June 30, 2012 and December 31, 2011.

(PPL, LKE, LG&E and KU)

Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no earnings impact.

(PPL and PPL Energy Supply)

The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $304million and $292 million at June 30, 2012 and December 31, 2011.

Assets in the NDT funds are legally restricted for purposes of settling PPL's and PPL Energy Supply's ARO related to the decommissioning of the PPL Susquehanna nuclearplant. The aggregate fair value of these assets was $681 million and $640 million at June 30, 2012 and December 31, 2011, and is included in "Nuclear plant decommissioning trust funds" on the Balance Sheets. See Notes 13 and 17 for additional information on these assets.

LG And E And KU Energy LLC [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

16. Asset Retirement Obligations
(PPL, PPL Energy Supply, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		17		13		3		1		2
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(6)		(5)		(1)		(1)
Balance at June 30, 2012		$	510	$	369	$	120	$	57	$	63

Substantially all of the ARO balances are classified as noncurrent at June 30, 2012 and December 31, 2011.

(PPL, LKE, LG&E and KU)

Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no earnings impact.

(PPL and PPL Energy Supply)

The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $304million and $292 million at June 30, 2012 and December 31, 2011.

Assets in the NDT funds are legally restricted for purposes of settling PPL's and PPL Energy Supply's ARO related to the decommissioning of the PPL Susquehanna nuclearplant. The aggregate fair value of these assets was $681 million and $640 million at June 30, 2012 and December 31, 2011, and is included in "Nuclear plant decommissioning trust funds" on the Balance Sheets. See Notes 13 and 17 for additional information on these assets.

Louisville Gas And Electric Co [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

16. Asset Retirement Obligations
(PPL, PPL Energy Supply, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		17		13		3		1		2
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(6)		(5)		(1)		(1)
Balance at June 30, 2012		$	510	$	369	$	120	$	57	$	63

Substantially all of the ARO balances are classified as noncurrent at June 30, 2012 and December 31, 2011.

(PPL, LKE, LG&E and KU)

Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no earnings impact.

(PPL and PPL Energy Supply)

The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $304million and $292 million at June 30, 2012 and December 31, 2011.

Assets in the NDT funds are legally restricted for purposes of settling PPL's and PPL Energy Supply's ARO related to the decommissioning of the PPL Susquehanna nuclearplant. The aggregate fair value of these assets was $681 million and $640 million at June 30, 2012 and December 31, 2011, and is included in "Nuclear plant decommissioning trust funds" on the Balance Sheets. See Notes 13 and 17 for additional information on these assets.

Kentucky Utilities Co [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligations

16. Asset Retirement Obligations
(PPL, PPL Energy Supply, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		17		13		3		1		2
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(6)		(5)		(1)		(1)
Balance at June 30, 2012		$	510	$	369	$	120	$	57	$	63

Substantially all of the ARO balances are classified as noncurrent at June 30, 2012 and December 31, 2011.

(PPL, LKE, LG&E and KU)

Accretion and depreciation expense recorded by LG&E and KU is offset with a regulatory credit on the income statement, such that there is no earnings impact.

(PPL and PPL Energy Supply)

The most significant ARO recorded by PPL and PPL Energy Supply relates to the decommissioning of the Susquehanna nuclear plant. The accrued nuclear decommissioning obligation was $304million and $292 million at June 30, 2012 and December 31, 2011.

Assets in the NDT funds are legally restricted for purposes of settling PPL's and PPL Energy Supply's ARO related to the decommissioning of the PPL Susquehanna nuclearplant. The aggregate fair value of these assets was $681 million and $640 million at June 30, 2012 and December 31, 2011, and is included in "Nuclear plant decommissioning trust funds" on the Balance Sheets. See Notes 13 and 17 for additional information on these assets.