Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2013

Asset Retirement Obligation [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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		18		14		3		1		2
	Changes in estimated cash flow or settlement date				(1)		1		1
	Effect of foreign currency exchange rates		(3)
	Obligations settled		(6)		(3)		(3)		(3)
Balance at June 30, 2013		$	561	$	385	$	132	$	61	$	71

PPL Energy Supply LLC [Member]

Asset Retirement Obligation [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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		18		14		3		1		2
	Changes in estimated cash flow or settlement date				(1)		1		1
	Effect of foreign currency exchange rates		(3)
	Obligations settled		(6)		(3)		(3)		(3)
Balance at June 30, 2013		$	561	$	385	$	132	$	61	$	71

LG And E And KU Energy LLC [Member]

Asset Retirement Obligation [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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		18		14		3		1		2
	Changes in estimated cash flow or settlement date				(1)		1		1
	Effect of foreign currency exchange rates		(3)
	Obligations settled		(6)		(3)		(3)		(3)
Balance at June 30, 2013		$	561	$	385	$	132	$	61	$	71

Louisville Gas And Electric Co [Member]

Asset Retirement Obligation [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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		18		14		3		1		2
	Changes in estimated cash flow or settlement date				(1)		1		1
	Effect of foreign currency exchange rates		(3)
	Obligations settled		(6)		(3)		(3)		(3)
Balance at June 30, 2013		$	561	$	385	$	132	$	61	$	71

Kentucky Utilities Co [Member]

Asset Retirement Obligation [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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		18		14		3		1		2
	Changes in estimated cash flow or settlement date				(1)		1		1
	Effect of foreign currency exchange rates		(3)
	Obligations settled		(6)		(3)		(3)		(3)
Balance at June 30, 2013		$	561	$	385	$	132	$	61	$	71