Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2013

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(All Registrants except PPL Electric)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		27		22		4		2		2
	Obligations incurred		6		6
	Changes in estimated cash flow or settlement date		123		1		122		17		105
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(12)		(6)		(6)		(6)
Balance at September 30, 2013		$	694	$	398	$	251	$	75	$	176

PPL Energy Supply LLC [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(All Registrants except PPL Electric)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		27		22		4		2		2
	Obligations incurred		6		6
	Changes in estimated cash flow or settlement date		123		1		122		17		105
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(12)		(6)		(6)		(6)
Balance at September 30, 2013		$	694	$	398	$	251	$	75	$	176

LG And E And KU Energy LLC [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(All Registrants except PPL Electric)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		27		22		4		2		2
	Obligations incurred		6		6
	Changes in estimated cash flow or settlement date		123		1		122		17		105
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(12)		(6)		(6)		(6)
Balance at September 30, 2013		$	694	$	398	$	251	$	75	$	176

Louisville Gas And Electric Co [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(All Registrants except PPL Electric)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		27		22		4		2		2
	Obligations incurred		6		6
	Changes in estimated cash flow or settlement date		123		1		122		17		105
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(12)		(6)		(6)		(6)
Balance at September 30, 2013		$	694	$	398	$	251	$	75	$	176

Kentucky Utilities Co [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(All Registrants except PPL Electric)
The changes in the carrying amounts of AROs were as follows.
				PPL
		PPL		Energy Supply		LKE		LG&E		KU
Balance at December 31, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		27		22		4		2		2
	Obligations incurred		6		6
	Changes in estimated cash flow or settlement date		123		1		122		17		105
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(12)		(6)		(6)		(6)
Balance at September 30, 2013		$	694	$	398	$	251	$	75	$	176