Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2012

Asset Retirement Obligations [Abstract]

Asset Retirement Obligation Roll Forward

The changes in the carrying amounts of AROs were as follows.

				PPL
		PPL		Energy Supply		LKE		LG&E		KU
ARO at December 31, 2011		$	497	$	359	$	118	$	57	$	61
	Accretion expense		9		6		2		1		1
	Changes in estimated cash flow or settlement date		2		2
	Obligations settled		(4)		(4)
ARO at March 31, 2012		$	504	$	363	$	120	$	58	$	62