Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation [Line Items]

Stock-Based Compensation, Plan Award Limits

The following table details the award limits under each of the plans.

		Annual Grant Limit		Annual Grant Limit
		Total As % of		For Individual Participants -
	Total Plan	Outstanding	Annual Grant	Performance Based Awards
	Award	PPL Common Stock	Limit	For awards	For awards
	Limit	On First Day of	Options	denominated in	denominated in
Plan	(Shares)	Each Calendar Year	(Shares)	shares (Shares)	cash (in dollars)
ICP(a)	15,769,431	2%	3,000,000
SIP	10,000,000		2,000,000	750,000	$	15,000,000
ICPKE	14,199,796	2%	3,000,000

(a)       Applicable to outstanding awards granted from January 27, 2006 to January 26, 2012. During 2012, the total plan award limit was reached and the ICP was replaced by the SIP.

Restricted Stock and Restricted Stock Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of restricted stock and restricted stock units granted was:

	2012		2011		2010
PPL	$	28.35	$	25.25	$	28.93
PPL Energy Supply		28.29		25.14		29.49
PPL Electric		28.51		25.09		29.40
LKE		28.34				26.31

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock and restricted stock unit activity for 2012 was:

			Weighted-
			Average
		Restricted	Grant Date Fair
		Shares/Units	Value Per Share
PPL
Nonvested, beginning of period		2,040,035	$	27.03
	Granted	1,487,556		28.35
	Vested	(1,002,229)		27.23
	Forfeited	(21,592)		27.69
Nonvested, end of period		2,503,770		27.73
PPL Energy Supply
Nonvested, beginning of period		665,180	$	27.30
	Transferred	62,320		28.66
	Granted	564,020		28.29
	Vested	(219,124)		27.04
	Forfeited	(11,710)		27.97
Nonvested, end of period		1,060,686		27.95
PPL Electric
Nonvested, beginning of period		251,595	$	27.10
	Transferred	(54,460)		28.93
	Granted	133,530		28.51
	Vested	(61,995)		27.63
	Forfeited	(7,442)		27.46
Nonvested, end of period		261,228		27.30
LKE
Nonvested, beginning of period		145,210	$	26.31
	Granted	144,340		28.34
	Vested	(149,910)		26.38
Nonvested, end of period		139,640		28.34

Restricted Stock and Restricted Stock Units, Total Fair Value Vested at Year End

The total fair value of restricted stock and restricted stock units vesting for the years ended December 31 was:

	2012		2011		2010
PPL	$	27	$	19	$	15
PPL Energy Supply		6		6		7
PPL Electric		2		2		2
LKE		4		1

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:

	2012	2011	2010
Risk-free interest rate	0.30%	1.00%	1.41%
Expected stock volatility	19.30%	23.40%	34.70%
Expected life	3 years	3 years	3 years

Performance Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of performance units granted was:

	2012		2011		2010
PPL	$	31.41	$	29.67	$	34.06
PPL Energy Supply		31.40		29.68		34.16
PPL Electric		31.37		29.57		33.54
LKE		31.30		29.20

Performance Units, Activity Rollforward

Performance unit activity for 2012 was:

				Weighted-
				Average Grant
		Performance		Date Fair Value
		Units		Per Share
PPL
Nonvested, beginning of period			398,609	$	33.31
	Granted		322,771		31.41
	Forfeited		(127,177)		38.61
Nonvested, end of period			594,203		31.14
PPL Energy Supply
Nonvested, beginning of period			75,067	$	33.00
	Transferred		12,719		34.15
	Granted		71,572		31.40
	Forfeited		(35,169)		38.90
Nonvested, end of period			124,189		31.26
PPL Electric
Nonvested, beginning of period			32,808	$	33.11
	Transferred		(12,719)		34.15
	Granted		16,234		31.37
	Forfeited		(10,240)		34.17
Nonvested, end of period			26,083		31.10
LKE
Nonvested, beginning of period			26,893	$	29.20
	Granted		55,857		31.30
Nonvested, end of period			82,750		30.62

Stock Options, Valuation Assumptions

The assumptions used in the model were:

	2012		2011		2010
Risk-free interest rate		1.13%		2.34%		2.52%
Expected option life		6.17 years		5.71 years		5.43 years
Expected stock volatility		20.60%		21.60%		28.57%
Dividend yield		5.00%		5.93%		5.61%

Stock Options, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of options granted was:

	2012		2011		2010
PPL	$	2.48	$	2.47	$	4.70
PPL Energy Supply		2.51		2.47		4.73
PPL Electric		2.50		2.47		4.62
LKE		2.51		2.47

Stock Options, Activity Rollforward

Stock option activity for 2012 was:

						Weighted-
				Weighted		Average
				Average		Remaining		Aggregate
		Number		Exercise		Contractual		Total Intrinsic
		of Options		Price Per Share		Term		Value
PPL
Outstanding at beginning of period			7,530,198	$	30.65
	Granted		1,948,550		28.19
	Exercised		(263,094)		23.22
	Forfeited		(81,109)		28.43
Outstanding at end of period			9,134,545		30.36		6.3	$	9
Options exercisable at end of period			6,134,265		31.70		5.7		6
PPL Energy Supply
Outstanding at beginning of period			1,690,153	$	30.79
	Transferred		176,070		31.90
	Granted		483,740		28.19
	Exercised		(36,358)		24.35
	Forfeited		(48,482)		29.34
Outstanding at end of period			2,265,123		30.45		6.1	$	2
Options exercisable at end of period			1,529,711		31.80		4.9		1
PPL Electric
Outstanding at beginning of period			460,510	$	31.05
	Transferred		(176,070)		31.90
	Granted		100,590		28.22
	Exercised		(11,873)		25.67
	Forfeited		(32,627)		27.07
Outstanding at end of period			340,530		30.35		7.0
Options exercisable at end of period			193,355		32.43		5.8
LKE
Outstanding at beginning of period			329,600	$	25.77
	Granted		354,490		28.17
	Exercised		(49,243)		25.74
Outstanding at end of period			634,847		27.11		8.6	$	1
Options exercisable at end of period			144,260		26.62		8.4

Compensation Costs for Restricted Stock, Restricted Stock Units, Performance Units and Stock Options

Compensation expense for restricted stock, restricted stock units, performance units and stock options accounted for as equity awards was as follows:

	2012		2011		2010
PPL	$	49	$	36	$	26
PPL Energy Supply		23		16		20
PPL Electric		11		8		6
LKE		8		5

The income tax benefit related to above compensation expense was as follows:

	2012		2011		2010
PPL	$	20	$	15	$	11
PPL Energy Supply		10		6		8
PPL Electric		4		3		3
LKE		4		2

Unrecognized Compensation Cost, Nonvested Restricted Stock, Restricted Stock Units, Performance Units and Stock Option Awards

At December 31, 2012, unrecognized compensation expense related to nonvested restricted stock, restricted stock units, performance units and stock option awards was:

			Weighted-
	Unrecognized		Average
	Compensation		Period for
	Expense		Recognition
PPL	$	27		2.1 years
PPL Energy Supply		11		2.4 years
PPL Electric		2		2.2 years
LKE		2		1.8 years

PPL Energy Supply LLC [Member]

Stock-Based Compensation [Line Items]

Stock-Based Compensation, Plan Award Limits

The following table details the award limits under each of the plans.

		Annual Grant Limit		Annual Grant Limit
		Total As % of		For Individual Participants -
	Total Plan	Outstanding	Annual Grant	Performance Based Awards
	Award	PPL Common Stock	Limit	For awards	For awards
	Limit	On First Day of	Options	denominated in	denominated in
Plan	(Shares)	Each Calendar Year	(Shares)	shares (Shares)	cash (in dollars)
ICP(a)	15,769,431	2%	3,000,000
SIP	10,000,000		2,000,000	750,000	$	15,000,000
ICPKE	14,199,796	2%	3,000,000

(a)       Applicable to outstanding awards granted from January 27, 2006 to January 26, 2012. During 2012, the total plan award limit was reached and the ICP was replaced by the SIP.

Restricted Stock and Restricted Stock Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of restricted stock and restricted stock units granted was:

	2012		2011		2010
PPL	$	28.35	$	25.25	$	28.93
PPL Energy Supply		28.29		25.14		29.49
PPL Electric		28.51		25.09		29.40
LKE		28.34				26.31

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock and restricted stock unit activity for 2012 was:

			Weighted-
			Average
		Restricted	Grant Date Fair
		Shares/Units	Value Per Share
PPL
Nonvested, beginning of period		2,040,035	$	27.03
	Granted	1,487,556		28.35
	Vested	(1,002,229)		27.23
	Forfeited	(21,592)		27.69
Nonvested, end of period		2,503,770		27.73
PPL Energy Supply
Nonvested, beginning of period		665,180	$	27.30
	Transferred	62,320		28.66
	Granted	564,020		28.29
	Vested	(219,124)		27.04
	Forfeited	(11,710)		27.97
Nonvested, end of period		1,060,686		27.95
PPL Electric
Nonvested, beginning of period		251,595	$	27.10
	Transferred	(54,460)		28.93
	Granted	133,530		28.51
	Vested	(61,995)		27.63
	Forfeited	(7,442)		27.46
Nonvested, end of period		261,228		27.30
LKE
Nonvested, beginning of period		145,210	$	26.31
	Granted	144,340		28.34
	Vested	(149,910)		26.38
Nonvested, end of period		139,640		28.34

Restricted Stock and Restricted Stock Units, Total Fair Value Vested at Year End

The total fair value of restricted stock and restricted stock units vesting for the years ended December 31 was:

	2012		2011		2010
PPL	$	27	$	19	$	15
PPL Energy Supply		6		6		7
PPL Electric		2		2		2
LKE		4		1

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:

	2012	2011	2010
Risk-free interest rate	0.30%	1.00%	1.41%
Expected stock volatility	19.30%	23.40%	34.70%
Expected life	3 years	3 years	3 years

Performance Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of performance units granted was:

	2012		2011		2010
PPL	$	31.41	$	29.67	$	34.06
PPL Energy Supply		31.40		29.68		34.16
PPL Electric		31.37		29.57		33.54
LKE		31.30		29.20

Performance Units, Activity Rollforward

Performance unit activity for 2012 was:

				Weighted-
				Average Grant
		Performance		Date Fair Value
		Units		Per Share
PPL
Nonvested, beginning of period			398,609	$	33.31
	Granted		322,771		31.41
	Forfeited		(127,177)		38.61
Nonvested, end of period			594,203		31.14
PPL Energy Supply
Nonvested, beginning of period			75,067	$	33.00
	Transferred		12,719		34.15
	Granted		71,572		31.40
	Forfeited		(35,169)		38.90
Nonvested, end of period			124,189		31.26
PPL Electric
Nonvested, beginning of period			32,808	$	33.11
	Transferred		(12,719)		34.15
	Granted		16,234		31.37
	Forfeited		(10,240)		34.17
Nonvested, end of period			26,083		31.10
LKE
Nonvested, beginning of period			26,893	$	29.20
	Granted		55,857		31.30
Nonvested, end of period			82,750		30.62

Stock Options, Valuation Assumptions

The assumptions used in the model were:

	2012		2011		2010
Risk-free interest rate		1.13%		2.34%		2.52%
Expected option life		6.17 years		5.71 years		5.43 years
Expected stock volatility		20.60%		21.60%		28.57%
Dividend yield		5.00%		5.93%		5.61%

Stock Options, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of options granted was:

	2012		2011		2010
PPL	$	2.48	$	2.47	$	4.70
PPL Energy Supply		2.51		2.47		4.73
PPL Electric		2.50		2.47		4.62
LKE		2.51		2.47

Stock Options, Activity Rollforward

Stock option activity for 2012 was:

						Weighted-
				Weighted		Average
				Average		Remaining		Aggregate
		Number		Exercise		Contractual		Total Intrinsic
		of Options		Price Per Share		Term		Value
PPL
Outstanding at beginning of period			7,530,198	$	30.65
	Granted		1,948,550		28.19
	Exercised		(263,094)		23.22
	Forfeited		(81,109)		28.43
Outstanding at end of period			9,134,545		30.36		6.3	$	9
Options exercisable at end of period			6,134,265		31.70		5.7		6
PPL Energy Supply
Outstanding at beginning of period			1,690,153	$	30.79
	Transferred		176,070		31.90
	Granted		483,740		28.19
	Exercised		(36,358)		24.35
	Forfeited		(48,482)		29.34
Outstanding at end of period			2,265,123		30.45		6.1	$	2
Options exercisable at end of period			1,529,711		31.80		4.9		1
PPL Electric
Outstanding at beginning of period			460,510	$	31.05
	Transferred		(176,070)		31.90
	Granted		100,590		28.22
	Exercised		(11,873)		25.67
	Forfeited		(32,627)		27.07
Outstanding at end of period			340,530		30.35		7.0
Options exercisable at end of period			193,355		32.43		5.8
LKE
Outstanding at beginning of period			329,600	$	25.77
	Granted		354,490		28.17
	Exercised		(49,243)		25.74
Outstanding at end of period			634,847		27.11		8.6	$	1
Options exercisable at end of period			144,260		26.62		8.4

Compensation Costs for Restricted Stock, Restricted Stock Units, Performance Units and Stock Options

Compensation expense for restricted stock, restricted stock units, performance units and stock options accounted for as equity awards was as follows:

	2012		2011		2010
PPL	$	49	$	36	$	26
PPL Energy Supply		23		16		20
PPL Electric		11		8		6
LKE		8		5

The income tax benefit related to above compensation expense was as follows:

	2012		2011		2010
PPL	$	20	$	15	$	11
PPL Energy Supply		10		6		8
PPL Electric		4		3		3
LKE		4		2

Unrecognized Compensation Cost, Nonvested Restricted Stock, Restricted Stock Units, Performance Units and Stock Option Awards

At December 31, 2012, unrecognized compensation expense related to nonvested restricted stock, restricted stock units, performance units and stock option awards was:

			Weighted-
	Unrecognized		Average
	Compensation		Period for
	Expense		Recognition
PPL	$	27		2.1 years
PPL Energy Supply		11		2.4 years
PPL Electric		2		2.2 years
LKE		2		1.8 years

PPL Electric Utilities Corp [Member]

Stock-Based Compensation [Line Items]

Stock-Based Compensation, Plan Award Limits

The following table details the award limits under each of the plans.

		Annual Grant Limit		Annual Grant Limit
		Total As % of		For Individual Participants -
	Total Plan	Outstanding	Annual Grant	Performance Based Awards
	Award	PPL Common Stock	Limit	For awards	For awards
	Limit	On First Day of	Options	denominated in	denominated in
Plan	(Shares)	Each Calendar Year	(Shares)	shares (Shares)	cash (in dollars)
ICP(a)	15,769,431	2%	3,000,000
SIP	10,000,000		2,000,000	750,000	$	15,000,000
ICPKE	14,199,796	2%	3,000,000

(a)       Applicable to outstanding awards granted from January 27, 2006 to January 26, 2012. During 2012, the total plan award limit was reached and the ICP was replaced by the SIP.

Restricted Stock and Restricted Stock Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of restricted stock and restricted stock units granted was:

	2012		2011		2010
PPL	$	28.35	$	25.25	$	28.93
PPL Energy Supply		28.29		25.14		29.49
PPL Electric		28.51		25.09		29.40
LKE		28.34				26.31

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock and restricted stock unit activity for 2012 was:

			Weighted-
			Average
		Restricted	Grant Date Fair
		Shares/Units	Value Per Share
PPL
Nonvested, beginning of period		2,040,035	$	27.03
	Granted	1,487,556		28.35
	Vested	(1,002,229)		27.23
	Forfeited	(21,592)		27.69
Nonvested, end of period		2,503,770		27.73
PPL Energy Supply
Nonvested, beginning of period		665,180	$	27.30
	Transferred	62,320		28.66
	Granted	564,020		28.29
	Vested	(219,124)		27.04
	Forfeited	(11,710)		27.97
Nonvested, end of period		1,060,686		27.95
PPL Electric
Nonvested, beginning of period		251,595	$	27.10
	Transferred	(54,460)		28.93
	Granted	133,530		28.51
	Vested	(61,995)		27.63
	Forfeited	(7,442)		27.46
Nonvested, end of period		261,228		27.30
LKE
Nonvested, beginning of period		145,210	$	26.31
	Granted	144,340		28.34
	Vested	(149,910)		26.38
Nonvested, end of period		139,640		28.34

Restricted Stock and Restricted Stock Units, Total Fair Value Vested at Year End

The total fair value of restricted stock and restricted stock units vesting for the years ended December 31 was:

	2012		2011		2010
PPL	$	27	$	19	$	15
PPL Energy Supply		6		6		7
PPL Electric		2		2		2
LKE		4		1

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:

	2012	2011	2010
Risk-free interest rate	0.30%	1.00%	1.41%
Expected stock volatility	19.30%	23.40%	34.70%
Expected life	3 years	3 years	3 years

Performance Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of performance units granted was:

	2012		2011		2010
PPL	$	31.41	$	29.67	$	34.06
PPL Energy Supply		31.40		29.68		34.16
PPL Electric		31.37		29.57		33.54
LKE		31.30		29.20

Performance Units, Activity Rollforward

Performance unit activity for 2012 was:

				Weighted-
				Average Grant
		Performance		Date Fair Value
		Units		Per Share
PPL
Nonvested, beginning of period			398,609	$	33.31
	Granted		322,771		31.41
	Forfeited		(127,177)		38.61
Nonvested, end of period			594,203		31.14
PPL Energy Supply
Nonvested, beginning of period			75,067	$	33.00
	Transferred		12,719		34.15
	Granted		71,572		31.40
	Forfeited		(35,169)		38.90
Nonvested, end of period			124,189		31.26
PPL Electric
Nonvested, beginning of period			32,808	$	33.11
	Transferred		(12,719)		34.15
	Granted		16,234		31.37
	Forfeited		(10,240)		34.17
Nonvested, end of period			26,083		31.10
LKE
Nonvested, beginning of period			26,893	$	29.20
	Granted		55,857		31.30
Nonvested, end of period			82,750		30.62

Stock Options, Valuation Assumptions

The assumptions used in the model were:

	2012		2011		2010
Risk-free interest rate		1.13%		2.34%		2.52%
Expected option life		6.17 years		5.71 years		5.43 years
Expected stock volatility		20.60%		21.60%		28.57%
Dividend yield		5.00%		5.93%		5.61%

Stock Options, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of options granted was:

	2012		2011		2010
PPL	$	2.48	$	2.47	$	4.70
PPL Energy Supply		2.51		2.47		4.73
PPL Electric		2.50		2.47		4.62
LKE		2.51		2.47

Stock Options, Activity Rollforward

Stock option activity for 2012 was:

						Weighted-
				Weighted		Average
				Average		Remaining		Aggregate
		Number		Exercise		Contractual		Total Intrinsic
		of Options		Price Per Share		Term		Value
PPL
Outstanding at beginning of period			7,530,198	$	30.65
	Granted		1,948,550		28.19
	Exercised		(263,094)		23.22
	Forfeited		(81,109)		28.43
Outstanding at end of period			9,134,545		30.36		6.3	$	9
Options exercisable at end of period			6,134,265		31.70		5.7		6
PPL Energy Supply
Outstanding at beginning of period			1,690,153	$	30.79
	Transferred		176,070		31.90
	Granted		483,740		28.19
	Exercised		(36,358)		24.35
	Forfeited		(48,482)		29.34
Outstanding at end of period			2,265,123		30.45		6.1	$	2
Options exercisable at end of period			1,529,711		31.80		4.9		1
PPL Electric
Outstanding at beginning of period			460,510	$	31.05
	Transferred		(176,070)		31.90
	Granted		100,590		28.22
	Exercised		(11,873)		25.67
	Forfeited		(32,627)		27.07
Outstanding at end of period			340,530		30.35		7.0
Options exercisable at end of period			193,355		32.43		5.8
LKE
Outstanding at beginning of period			329,600	$	25.77
	Granted		354,490		28.17
	Exercised		(49,243)		25.74
Outstanding at end of period			634,847		27.11		8.6	$	1
Options exercisable at end of period			144,260		26.62		8.4

Compensation Costs for Restricted Stock, Restricted Stock Units, Performance Units and Stock Options

Compensation expense for restricted stock, restricted stock units, performance units and stock options accounted for as equity awards was as follows:

	2012		2011		2010
PPL	$	49	$	36	$	26
PPL Energy Supply		23		16		20
PPL Electric		11		8		6
LKE		8		5

The income tax benefit related to above compensation expense was as follows:

	2012		2011		2010
PPL	$	20	$	15	$	11
PPL Energy Supply		10		6		8
PPL Electric		4		3		3
LKE		4		2

Unrecognized Compensation Cost, Nonvested Restricted Stock, Restricted Stock Units, Performance Units and Stock Option Awards

At December 31, 2012, unrecognized compensation expense related to nonvested restricted stock, restricted stock units, performance units and stock option awards was:

			Weighted-
	Unrecognized		Average
	Compensation		Period for
	Expense		Recognition
PPL	$	27		2.1 years
PPL Energy Supply		11		2.4 years
PPL Electric		2		2.2 years
LKE		2		1.8 years

LG And E And KU Energy LLC [Member]

Stock-Based Compensation [Line Items]

Stock-Based Compensation, Plan Award Limits

The following table details the award limits under each of the plans.

		Annual Grant Limit		Annual Grant Limit
		Total As % of		For Individual Participants -
	Total Plan	Outstanding	Annual Grant	Performance Based Awards
	Award	PPL Common Stock	Limit	For awards	For awards
	Limit	On First Day of	Options	denominated in	denominated in
Plan	(Shares)	Each Calendar Year	(Shares)	shares (Shares)	cash (in dollars)
ICP(a)	15,769,431	2%	3,000,000
SIP	10,000,000		2,000,000	750,000	$	15,000,000
ICPKE	14,199,796	2%	3,000,000

(a)       Applicable to outstanding awards granted from January 27, 2006 to January 26, 2012. During 2012, the total plan award limit was reached and the ICP was replaced by the SIP.

Restricted Stock and Restricted Stock Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of restricted stock and restricted stock units granted was:

	2012		2011		2010
PPL	$	28.35	$	25.25	$	28.93
PPL Energy Supply		28.29		25.14		29.49
PPL Electric		28.51		25.09		29.40
LKE		28.34				26.31

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock and restricted stock unit activity for 2012 was:

			Weighted-
			Average
		Restricted	Grant Date Fair
		Shares/Units	Value Per Share
PPL
Nonvested, beginning of period		2,040,035	$	27.03
	Granted	1,487,556		28.35
	Vested	(1,002,229)		27.23
	Forfeited	(21,592)		27.69
Nonvested, end of period		2,503,770		27.73
PPL Energy Supply
Nonvested, beginning of period		665,180	$	27.30
	Transferred	62,320		28.66
	Granted	564,020		28.29
	Vested	(219,124)		27.04
	Forfeited	(11,710)		27.97
Nonvested, end of period		1,060,686		27.95
PPL Electric
Nonvested, beginning of period		251,595	$	27.10
	Transferred	(54,460)		28.93
	Granted	133,530		28.51
	Vested	(61,995)		27.63
	Forfeited	(7,442)		27.46
Nonvested, end of period		261,228		27.30
LKE
Nonvested, beginning of period		145,210	$	26.31
	Granted	144,340		28.34
	Vested	(149,910)		26.38
Nonvested, end of period		139,640		28.34

Restricted Stock and Restricted Stock Units, Total Fair Value Vested at Year End

The total fair value of restricted stock and restricted stock units vesting for the years ended December 31 was:

	2012		2011		2010
PPL	$	27	$	19	$	15
PPL Energy Supply		6		6		7
PPL Electric		2		2		2
LKE		4		1

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:

	2012	2011	2010
Risk-free interest rate	0.30%	1.00%	1.41%
Expected stock volatility	19.30%	23.40%	34.70%
Expected life	3 years	3 years	3 years

Performance Units, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of performance units granted was:

	2012		2011		2010
PPL	$	31.41	$	29.67	$	34.06
PPL Energy Supply		31.40		29.68		34.16
PPL Electric		31.37		29.57		33.54
LKE		31.30		29.20

Performance Units, Activity Rollforward

Performance unit activity for 2012 was:

				Weighted-
				Average Grant
		Performance		Date Fair Value
		Units		Per Share
PPL
Nonvested, beginning of period			398,609	$	33.31
	Granted		322,771		31.41
	Forfeited		(127,177)		38.61
Nonvested, end of period			594,203		31.14
PPL Energy Supply
Nonvested, beginning of period			75,067	$	33.00
	Transferred		12,719		34.15
	Granted		71,572		31.40
	Forfeited		(35,169)		38.90
Nonvested, end of period			124,189		31.26
PPL Electric
Nonvested, beginning of period			32,808	$	33.11
	Transferred		(12,719)		34.15
	Granted		16,234		31.37
	Forfeited		(10,240)		34.17
Nonvested, end of period			26,083		31.10
LKE
Nonvested, beginning of period			26,893	$	29.20
	Granted		55,857		31.30
Nonvested, end of period			82,750		30.62

Stock Options, Valuation Assumptions

The assumptions used in the model were:

	2012		2011		2010
Risk-free interest rate		1.13%		2.34%		2.52%
Expected option life		6.17 years		5.71 years		5.43 years
Expected stock volatility		20.60%		21.60%		28.57%
Dividend yield		5.00%		5.93%		5.61%

Stock Options, Weighted Average Grant Date Fair Value

The weighted-average grant date fair value of options granted was:

	2012		2011		2010
PPL	$	2.48	$	2.47	$	4.70
PPL Energy Supply		2.51		2.47		4.73
PPL Electric		2.50		2.47		4.62
LKE		2.51		2.47

Stock Options, Activity Rollforward

Stock option activity for 2012 was:

						Weighted-
				Weighted		Average
				Average		Remaining		Aggregate
		Number		Exercise		Contractual		Total Intrinsic
		of Options		Price Per Share		Term		Value
PPL
Outstanding at beginning of period			7,530,198	$	30.65
	Granted		1,948,550		28.19
	Exercised		(263,094)		23.22
	Forfeited		(81,109)		28.43
Outstanding at end of period			9,134,545		30.36		6.3	$	9
Options exercisable at end of period			6,134,265		31.70		5.7		6
PPL Energy Supply
Outstanding at beginning of period			1,690,153	$	30.79
	Transferred		176,070		31.90
	Granted		483,740		28.19
	Exercised		(36,358)		24.35
	Forfeited		(48,482)		29.34
Outstanding at end of period			2,265,123		30.45		6.1	$	2
Options exercisable at end of period			1,529,711		31.80		4.9		1
PPL Electric
Outstanding at beginning of period			460,510	$	31.05
	Transferred		(176,070)		31.90
	Granted		100,590		28.22
	Exercised		(11,873)		25.67
	Forfeited		(32,627)		27.07
Outstanding at end of period			340,530		30.35		7.0
Options exercisable at end of period			193,355		32.43		5.8
LKE
Outstanding at beginning of period			329,600	$	25.77
	Granted		354,490		28.17
	Exercised		(49,243)		25.74
Outstanding at end of period			634,847		27.11		8.6	$	1
Options exercisable at end of period			144,260		26.62		8.4

Compensation Costs for Restricted Stock, Restricted Stock Units, Performance Units and Stock Options

Compensation expense for restricted stock, restricted stock units, performance units and stock options accounted for as equity awards was as follows:

	2012		2011		2010
PPL	$	49	$	36	$	26
PPL Energy Supply		23		16		20
PPL Electric		11		8		6
LKE		8		5

The income tax benefit related to above compensation expense was as follows:

	2012		2011		2010
PPL	$	20	$	15	$	11
PPL Energy Supply		10		6		8
PPL Electric		4		3		3
LKE		4		2

Unrecognized Compensation Cost, Nonvested Restricted Stock, Restricted Stock Units, Performance Units and Stock Option Awards

At December 31, 2012, unrecognized compensation expense related to nonvested restricted stock, restricted stock units, performance units and stock option awards was:

			Weighted-
	Unrecognized		Average
	Compensation		Period for
	Expense		Recognition
PPL	$	27		2.1 years
PPL Energy Supply		11		2.4 years
PPL Electric		2		2.2 years
LKE		2		1.8 years