Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2013

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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		9		7		2		1		1
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(3)		(2)		(1)		(1)
Balance at March 31, 2013		$	556	$	380	$	132	$	62	$	70

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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		9		7		2		1		1
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(3)		(2)		(1)		(1)
Balance at March 31, 2013		$	556	$	380	$	132	$	62	$	70

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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		9		7		2		1		1
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(3)		(2)		(1)		(1)
Balance at March 31, 2013		$	556	$	380	$	132	$	62	$	70

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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		9		7		2		1		1
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(3)		(2)		(1)		(1)
Balance at March 31, 2013		$	556	$	380	$	132	$	62	$	70

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, 2012		$	552	$	375	$	131	$	62	$	69
	Accretion expense		9		7		2		1		1
	Effect of foreign currency exchange rates		(2)
	Obligations settled		(3)		(2)		(1)		(1)
Balance at March 31, 2013		$	556	$	380	$	132	$	62	$	70