Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2015

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(PPL, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
		PPL		LKE		LG&E		KU
Balance at December 31, 2014		$	336	$	285	$	74	$	211
	Accretion		14		13		4		9
	Changes in estimated cash flow or settlement date		221		221		83		138
	Effect of foreign currency exchange rates		(1)
	Obligations settled		(5)		(5)		(4)		(1)
Balance at September 30, 2015		$	565	$	514	$	157	$	357

LG And E And KU Energy LLC [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(PPL, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
		PPL		LKE		LG&E		KU
Balance at December 31, 2014		$	336	$	285	$	74	$	211
	Accretion		14		13		4		9
	Changes in estimated cash flow or settlement date		221		221		83		138
	Effect of foreign currency exchange rates		(1)
	Obligations settled		(5)		(5)		(4)		(1)
Balance at September 30, 2015		$	565	$	514	$	157	$	357

Louisville Gas And Electric Co [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(PPL, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
		PPL		LKE		LG&E		KU
Balance at December 31, 2014		$	336	$	285	$	74	$	211
	Accretion		14		13		4		9
	Changes in estimated cash flow or settlement date		221		221		83		138
	Effect of foreign currency exchange rates		(1)
	Obligations settled		(5)		(5)		(4)		(1)
Balance at September 30, 2015		$	565	$	514	$	157	$	357

Kentucky Utilities Co [Member]

Asset Retirement Obligation [Line Items]

Asset Retirement Obligation Roll Forward

16. Asset Retirement Obligations
(PPL, LKE, LG&E and KU)
The changes in the carrying amounts of AROs were as follows.
		PPL		LKE		LG&E		KU
Balance at December 31, 2014		$	336	$	285	$	74	$	211
	Accretion		14		13		4		9
	Changes in estimated cash flow or settlement date		221		221		83		138
	Effect of foreign currency exchange rates		(1)
	Obligations settled		(5)		(5)		(4)		(1)
Balance at September 30, 2015		$	565	$	514	$	157	$	357