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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]

Stock-Based Compensation, Plan Award Limits

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

Total Plan

Annual Grant Limit
Total As % of
Outstanding

Annual Grant

Annual Grant Limit
For Individual Participants -
Performance Based Awards

Award
Limit

PPL Common Stock
On First Day of

Limit
Options

For awards
denominated in

Plan

(Shares)

Each Calendar Year

(Shares)

shares (Shares)

cash (in dollars)

SIP

15,000,000

2,000,000

750,000

15,000,000

ICPKE

14,199,796

3,000,000

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

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


	2020		2019		2018
PPL	$	35.30	$	31.95	$	30.58
PPL Electric	35.37		32.33		30.00
LKE	35.31		30.65		30.98

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock unit activity for 2020 was:


	Restricted Shares/Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	1,137,685	$	32.76
Granted	331,160	35.30
Vested	(562,848)	34.57
Forfeited	(9,661)	32.97
Nonvested, end of period	896,336	32.56

PPL Electric
Nonvested, beginning of period	229,860	$	32.61
Transfer between registrants	(1,197)	32.23
Granted	65,356	35.37
Vested	(79,313)	34.55
Forfeited	(3,986)	32.65
Nonvested, end of period	210,720	32.73

LKE
Nonvested, beginning of period	166,445	$	32.09
Transfer between registrants	(1,598)	30.57
Granted	50,402	35.31
Vested	(60,571)	34.88
Forfeited	(1,550)	30.36
Nonvested, end of period	153,128	32.08

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

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


	2020		2019		2018
PPL	$	19	$	13	$	16
PPL Electric	3		2		2
LKE	2		1		5

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:


	2020	2019	2018
Expected stock volatility	15.64%	17.57%	17.60%
Expected life	3 years	3 years	3 years

Performance Units, Weighted Average Grant Date Fair Value

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


	2020		2019		2018
PPL	$	37.63	$	35.83	$	38.26
PPL Electric	38.64		35.68		38.37
LKE	37.73		35.93		38.32

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


	2020		2019		2018
PPL	$	34.95	$	30.89	$	32.21
PPL Electric	35.59		30.76		32.32
LKE	34.81		30.99		32.28

Performance Units, Activity Rollforward

TSR performance unit activity for 2020 was:


	TSR Performance Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	739,392	$	37.50
Granted	261,891	37.63

Forfeited (a)	(375,029)	38.46
Nonvested, end of period	626,254	36.98

PPL Electric
Nonvested, beginning of period	66,799	$	37.43

Granted	21,416	38.64

Forfeited (a)	(26,408)	38.37
Nonvested, end of period	61,807	37.44

LKE
Nonvested, beginning of period	130,533	$	37.60

Granted	35,538	37.73

Forfeited (a)	(66,459)	38.23
Nonvested, end of period	99,612	37.23

(a)Primarily related to the forfeiture of 2017 performance units as performance during the period was below the minimum established performance threshold, which resulted in no payout.

ROE performance unit activity for 2020 was:


	ROE Performance Unit	Weighted- Average Grant Date Fair Value Per Share
PPL

Nonvested, beginning of period	570,765	$	32.02
Granted	374,878	34.95
Vested	(216,979)	34.42

Nonvested, end of period	728,664	32.81

PPL Electric
Nonvested, beginning of period	49,194	$	31.92

Granted	30,426	35.59
Vested	(17,813)	34.41

Nonvested, end of period	61,807	33.01

LKE
Nonvested, beginning of period	107,805	$	32.20

Granted	60,286	34.81
Vested	(46,384)	34.29

Nonvested, end of period	121,707	32.70

Stock Options, Activity Rollforward

Stock option activity for 2020 was:


	Number of Options	Weighted Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (years)	Aggregate Total Intrinsic Value
PPL
Outstanding at beginning of period	1,330,943	$	26.20
Exercised	(227,927)	26.10

Outstanding and exercisable at end of period	1,103,016	26.22		1.7	$	2

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


	2020		2019		2018
PPL	$	28	$	35	$	25
PPL Electric	10		12		10
LKE	11		9		8

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


	2020		2019		2018
PPL	$	8	$	10	$	10
PPL Electric	3		3		3
LKE	3		2		2

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

At December 31, 2020, unrecognized compensation expense related to nonvested stock awards was:


	Unrecognized Compensation Expense		Weighted- Average Period for Recognition
PPL	$	16	1.7
PPL Electric	3		1.8
LKE	1		1.4

Share-based Compensation Arrangements by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest

The total fair value of ROE performance units vesting for the years ended December 31 was:


	2020
PPL	$	8
PPL Electric	1
LKE	2

PPL Electric Utilities Corp [Member]

Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]

Stock-Based Compensation, Plan Award Limits

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

Total Plan

Annual Grant Limit
Total As % of
Outstanding

Annual Grant

Annual Grant Limit
For Individual Participants -
Performance Based Awards

Award
Limit

PPL Common Stock
On First Day of

Limit
Options

For awards
denominated in

Plan

(Shares)

Each Calendar Year

(Shares)

shares (Shares)

cash (in dollars)

SIP

15,000,000

2,000,000

750,000

15,000,000

ICPKE

14,199,796

3,000,000

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

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


	2020		2019		2018
PPL	$	35.30	$	31.95	$	30.58
PPL Electric	35.37		32.33		30.00
LKE	35.31		30.65		30.98

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock unit activity for 2020 was:


	Restricted Shares/Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	1,137,685	$	32.76
Granted	331,160	35.30
Vested	(562,848)	34.57
Forfeited	(9,661)	32.97
Nonvested, end of period	896,336	32.56

PPL Electric
Nonvested, beginning of period	229,860	$	32.61
Transfer between registrants	(1,197)	32.23
Granted	65,356	35.37
Vested	(79,313)	34.55
Forfeited	(3,986)	32.65
Nonvested, end of period	210,720	32.73

LKE
Nonvested, beginning of period	166,445	$	32.09
Transfer between registrants	(1,598)	30.57
Granted	50,402	35.31
Vested	(60,571)	34.88
Forfeited	(1,550)	30.36
Nonvested, end of period	153,128	32.08

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

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


	2020		2019		2018
PPL	$	19	$	13	$	16
PPL Electric	3		2		2
LKE	2		1		5

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:


	2020	2019	2018
Expected stock volatility	15.64%	17.57%	17.60%
Expected life	3 years	3 years	3 years

Performance Units, Weighted Average Grant Date Fair Value

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


	2020		2019		2018
PPL	$	37.63	$	35.83	$	38.26
PPL Electric	38.64		35.68		38.37
LKE	37.73		35.93		38.32

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


	2020		2019		2018
PPL	$	34.95	$	30.89	$	32.21
PPL Electric	35.59		30.76		32.32
LKE	34.81		30.99		32.28

Performance Units, Activity Rollforward

TSR performance unit activity for 2020 was:


	TSR Performance Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	739,392	$	37.50
Granted	261,891	37.63

Forfeited (a)	(375,029)	38.46
Nonvested, end of period	626,254	36.98

PPL Electric
Nonvested, beginning of period	66,799	$	37.43

Granted	21,416	38.64

Forfeited (a)	(26,408)	38.37
Nonvested, end of period	61,807	37.44

LKE
Nonvested, beginning of period	130,533	$	37.60

Granted	35,538	37.73

Forfeited (a)	(66,459)	38.23
Nonvested, end of period	99,612	37.23

(a)Primarily related to the forfeiture of 2017 performance units as performance during the period was below the minimum established performance threshold, which resulted in no payout.

ROE performance unit activity for 2020 was:


	ROE Performance Unit	Weighted- Average Grant Date Fair Value Per Share
PPL

Nonvested, beginning of period	570,765	$	32.02
Granted	374,878	34.95
Vested	(216,979)	34.42

Nonvested, end of period	728,664	32.81

PPL Electric
Nonvested, beginning of period	49,194	$	31.92

Granted	30,426	35.59
Vested	(17,813)	34.41

Nonvested, end of period	61,807	33.01

LKE
Nonvested, beginning of period	107,805	$	32.20

Granted	60,286	34.81
Vested	(46,384)	34.29

Nonvested, end of period	121,707	32.70

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


	2020		2019		2018
PPL	$	28	$	35	$	25
PPL Electric	10		12		10
LKE	11		9		8

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


	2020		2019		2018
PPL	$	8	$	10	$	10
PPL Electric	3		3		3
LKE	3		2		2

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

At December 31, 2020, unrecognized compensation expense related to nonvested stock awards was:


	Unrecognized Compensation Expense		Weighted- Average Period for Recognition
PPL	$	16	1.7
PPL Electric	3		1.8
LKE	1		1.4

Share-based Compensation Arrangements by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest

The total fair value of ROE performance units vesting for the years ended December 31 was:


	2020
PPL	$	8
PPL Electric	1
LKE	2

LG And E And KU Energy LLC [Member]

Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]

Stock-Based Compensation, Plan Award Limits

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

Total Plan

Annual Grant Limit
Total As % of
Outstanding

Annual Grant

Annual Grant Limit
For Individual Participants -
Performance Based Awards

Award
Limit

PPL Common Stock
On First Day of

Limit
Options

For awards
denominated in

Plan

(Shares)

Each Calendar Year

(Shares)

shares (Shares)

cash (in dollars)

SIP

15,000,000

2,000,000

750,000

15,000,000

ICPKE

14,199,796

3,000,000

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

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


	2020		2019		2018
PPL	$	35.30	$	31.95	$	30.58
PPL Electric	35.37		32.33		30.00
LKE	35.31		30.65		30.98

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock unit activity for 2020 was:


	Restricted Shares/Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	1,137,685	$	32.76
Granted	331,160	35.30
Vested	(562,848)	34.57
Forfeited	(9,661)	32.97
Nonvested, end of period	896,336	32.56

PPL Electric
Nonvested, beginning of period	229,860	$	32.61
Transfer between registrants	(1,197)	32.23
Granted	65,356	35.37
Vested	(79,313)	34.55
Forfeited	(3,986)	32.65
Nonvested, end of period	210,720	32.73

LKE
Nonvested, beginning of period	166,445	$	32.09
Transfer between registrants	(1,598)	30.57
Granted	50,402	35.31
Vested	(60,571)	34.88
Forfeited	(1,550)	30.36
Nonvested, end of period	153,128	32.08

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

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


	2020		2019		2018
PPL	$	19	$	13	$	16
PPL Electric	3		2		2
LKE	2		1		5

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:


	2020	2019	2018
Expected stock volatility	15.64%	17.57%	17.60%
Expected life	3 years	3 years	3 years

Performance Units, Weighted Average Grant Date Fair Value

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


	2020		2019		2018
PPL	$	37.63	$	35.83	$	38.26
PPL Electric	38.64		35.68		38.37
LKE	37.73		35.93		38.32

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


	2020		2019		2018
PPL	$	34.95	$	30.89	$	32.21
PPL Electric	35.59		30.76		32.32
LKE	34.81		30.99		32.28

Performance Units, Activity Rollforward

TSR performance unit activity for 2020 was:


	TSR Performance Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	739,392	$	37.50
Granted	261,891	37.63

Forfeited (a)	(375,029)	38.46
Nonvested, end of period	626,254	36.98

PPL Electric
Nonvested, beginning of period	66,799	$	37.43

Granted	21,416	38.64

Forfeited (a)	(26,408)	38.37
Nonvested, end of period	61,807	37.44

LKE
Nonvested, beginning of period	130,533	$	37.60

Granted	35,538	37.73

Forfeited (a)	(66,459)	38.23
Nonvested, end of period	99,612	37.23

(a)Primarily related to the forfeiture of 2017 performance units as performance during the period was below the minimum established performance threshold, which resulted in no payout.

ROE performance unit activity for 2020 was:


	ROE Performance Unit	Weighted- Average Grant Date Fair Value Per Share
PPL

Nonvested, beginning of period	570,765	$	32.02
Granted	374,878	34.95
Vested	(216,979)	34.42

Nonvested, end of period	728,664	32.81

PPL Electric
Nonvested, beginning of period	49,194	$	31.92

Granted	30,426	35.59
Vested	(17,813)	34.41

Nonvested, end of period	61,807	33.01

LKE
Nonvested, beginning of period	107,805	$	32.20

Granted	60,286	34.81
Vested	(46,384)	34.29

Nonvested, end of period	121,707	32.70

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


	2020		2019		2018
PPL	$	28	$	35	$	25
PPL Electric	10		12		10
LKE	11		9		8

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


	2020		2019		2018
PPL	$	8	$	10	$	10
PPL Electric	3		3		3
LKE	3		2		2

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

At December 31, 2020, unrecognized compensation expense related to nonvested stock awards was:


	Unrecognized Compensation Expense		Weighted- Average Period for Recognition
PPL	$	16	1.7
PPL Electric	3		1.8
LKE	1		1.4

Share-based Compensation Arrangements by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest

The total fair value of ROE performance units vesting for the years ended December 31 was:


	2020
PPL	$	8
PPL Electric	1
LKE	2