Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 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		27		21		5		2		3
	Obligations incurred		3		3
	Changes in estimated cash flow or settlement date		(7)		(7)
	Obligations settled		(7)		(5)		(2)		(2)
Balance at September 30, 2012		$	513	$	371	$	121	$	57	$	64

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		27		21		5		2		3
	Obligations incurred		3		3
	Changes in estimated cash flow or settlement date		(7)		(7)
	Obligations settled		(7)		(5)		(2)		(2)
Balance at September 30, 2012		$	513	$	371	$	121	$	57	$	64

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		27		21		5		2		3
	Obligations incurred		3		3
	Changes in estimated cash flow or settlement date		(7)		(7)
	Obligations settled		(7)		(5)		(2)		(2)
Balance at September 30, 2012		$	513	$	371	$	121	$	57	$	64

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		27		21		5		2		3
	Obligations incurred		3		3
	Changes in estimated cash flow or settlement date		(7)		(7)
	Obligations settled		(7)		(5)		(2)		(2)
Balance at September 30, 2012		$	513	$	371	$	121	$	57	$	64

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		27		21		5		2		3
	Obligations incurred		3		3
	Changes in estimated cash flow or settlement date		(7)		(7)
	Obligations settled		(7)		(5)		(2)		(2)
Balance at September 30, 2012		$	513	$	371	$	121	$	57	$	64