Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2012

Asset Retirement Obligations [Line Items]

Asset Retirement Obligation Roll Forward

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

PPL Energy Supply LLC [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligation Roll Forward

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

LG And E And KU Energy LLC [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligation Roll Forward

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

Louisville Gas And Electric Co [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligation Roll Forward

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

Kentucky Utilities Co [Member]

Asset Retirement Obligations [Line Items]

Asset Retirement Obligation Roll Forward

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