Defined Benefits (Tables)

3 Months Ended

Mar. 31, 2012

Defined Benefits [Abstract]

Schedule Of Net Periodic Defined Benefit Costs (Credits)

Following are the net periodic defined benefit costs (credits) of the plans sponsored byPPL, PPL Energy Supply, LKE and LG&E for the three months ended March 31.

										Other Postretirement
		Pension Benefits								Benefits
		U.S.				U.K.
		2012		2011		2012		2011		2012		2011
PPL
Service cost		$	26	$	24	$	13	$	5	$	3	$	3
Interest cost			56		55		84		39		8		8
Expected return on plan assets			(66)		(62)		(111)		(52)		(6)		(6)
Amortization of:
	Transition obligation										1
	Prior service cost		6		6		1		1
	Actuarial (gain) loss		10		6		20		14		1		2
Net periodic defined benefit costs (credits)		$	32	$	29	$	7	$	7	$	7	$	7
PPL Energy Supply
Service cost		$	1	$	1
Interest cost			2		2
Expected return on plan assets			(2)		(2)
Amortization of:
	Actuarial (gain) loss		1
Net periodic defined benefit costs (credits)		$	2	$	1