Available-for-Sale Securities (Tables)

12 Months Ended

Dec. 31, 2012

Available-for-Sale Securities [Line Items]

The following table shows the amortized cost, the gross unrealized gains and losses recorded in AOCI and the fair value of available-for-sale securities.

					December 31, 2012								December 31, 2011
							Gross		Gross						Gross		Gross
					Amortized		Unrealized		Unrealized				Amortized		Unrealized		Unrealized
					Cost		Gains		Losses		Fair Value		Cost		Gains		Losses		Fair Value
PPL
	NDT funds:
		Cash and cash equivalents			$	11					$	11	$	12					$	12
		Equity securities:
			U.S. large-cap			222	$	190				412		211	$	146				357
			U.S. mid/small-cap			30		30				60		29		23				52
		Debt securities:
			U.S. Treasury			86		9				95		76		10				86
			U.S. government sponsored
				agency		8		1				9		9		1				10
			Municipality			78		5	$	1		82		80		4	$	1		83
			Investment-grade corporate			36		4				40		35		3				38
			Other			3						3		2						2
		Total NDT funds				474		239		1		712		454		187		1		640
	Auction rate securities					20				1		19		25				1		24
	Total				$	494	$	239	$	2	$	731	$	479	$	187	$	2	$	664

PPL Energy Supply
	NDT funds:
		Cash and cash equivalents			$	11					$	11	$	12					$	12
		Equity securities:
			U.S. large-cap			222	$	190				412		211	$	146				357
			U.S. mid/small-cap			30		30				60		29		23				52
		Debt securities:
			U.S. Treasury			86		9				95		76		10				86
			U.S. government sponsored
				agency		8		1				9		9		1				10
			Municipality			78		5	$	1		82		80		4	$	1		83
			Investment-grade corporate			36		4				40		35		3				38
			Other			3						3		2						2
		Total NDT funds				474		239		1		712		454		187		1		640
	Auction rate securities					17				1		16		20				1		19
	Total				$	491	$	239	$	2	$	728	$	474	$	187	$	2	$	659

Scheduled Maturity Dates of Debt Securities

The following table shows the scheduled maturity dates of debt securities held at December 31, 2012.

	Maturity		Maturity		Maturity		Maturity
	Less Than		1-5		6-10		in Excess
	1 Year		Years		Years		of 10 Years		Total
PPL
Amortized cost	$	12	$	79	$	62	$	78	$	231
Fair value		12		83		68		85		248

PPL Energy Supply
Amortized cost	$	12	$	79	$	62	$	75	$	228
Fair value		12		83		68		82		245

Proceeds From and Realized Gains and Losses on Sales of Available-for-sale Securities

The following table shows proceeds from and realized gains and losses on sales of available-for-sale securities.

	2012		2011		2010
PPL
Proceeds from sales of NDT securities (a)	$	139	$	156	$	114
Other proceeds from sales		5		163
Gross realized gains (b)		29		28		13
Gross realized losses (b)		21		16		5

PPL Energy Supply
Proceeds from sales of NDT securities (a)	$	139	$	156	$	114
Other proceeds from sales		3
Gross realized gains (b)		29		28		13
Gross realized losses (b)		21		16		5

(a) These proceeds are used to pay income taxes and fees related to managing the trust. Remaining proceeds are reinvested in the trust.

(b) Excludes the impact of other-than-temporary impairment charges recognized on the Statements of Income.

PPL Energy Supply LLC [Member]