Asset Retirement Obligations

3 Months Ended

Mar. 31, 2012

PPL Corp [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
ARO at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		9		6		2		1		1
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(4)		(4)
ARO at March 31, 2012		$	504	$	363	$	120	$	58	$	62

Substantially all of the ARO balances are classified as noncurrent at March 31, 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 $298million and $292 million at March 31, 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 Susquehanna plant. The aggregate fair value of these assets was $693 million and $640 million at March 31, 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 [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
ARO at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		9		6		2		1		1
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(4)		(4)
ARO at March 31, 2012		$	504	$	363	$	120	$	58	$	62

Substantially all of the ARO balances are classified as noncurrent at March 31, 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 $298million and $292 million at March 31, 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 Susquehanna plant. The aggregate fair value of these assets was $693 million and $640 million at March 31, 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.

LKE [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
ARO at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		9		6		2		1		1
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(4)		(4)
ARO at March 31, 2012		$	504	$	363	$	120	$	58	$	62

Substantially all of the ARO balances are classified as noncurrent at March 31, 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 $298million and $292 million at March 31, 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 Susquehanna plant. The aggregate fair value of these assets was $693 million and $640 million at March 31, 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.

LGE [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
ARO at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		9		6		2		1		1
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(4)		(4)
ARO at March 31, 2012		$	504	$	363	$	120	$	58	$	62

Substantially all of the ARO balances are classified as noncurrent at March 31, 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 $298million and $292 million at March 31, 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 Susquehanna plant. The aggregate fair value of these assets was $693 million and $640 million at March 31, 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.

KU [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
ARO at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		9		6		2		1		1
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(4)		(4)
ARO at March 31, 2012		$	504	$	363	$	120	$	58	$	62

Substantially all of the ARO balances are classified as noncurrent at March 31, 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 $298million and $292 million at March 31, 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 Susquehanna plant. The aggregate fair value of these assets was $693 million and $640 million at March 31, 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.