Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

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	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	2	%	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:

	2021		2020		2019
PPL	$	28.00	$	35.30	$	31.95
PPL Electric	27.96		35.37		32.33

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock unit activity for 2021 was:

	Restricted Shares/Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	896,336	$	32.56
Granted	458,610	28.00
Vested	(303,890)	30.57
Forfeited	(46,473)	30.23
Nonvested, end of period	1,004,583	31.19
PPL Electric
Nonvested, beginning of period	210,720	$	32.73
Transfer between registrants	(92,596)	32.99
Granted	51,587	27.96
Vested	(32,266)	29.98
Forfeited	(6,158)	32.16
Nonvested, end of period	131,287	31.50

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:

	2021		2020		2019
PPL	$	8	$	19	$	13
PPL Electric	1		3		2

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:

	2021	2020	2019
Expected stock volatility	27.81%	15.64%	17.57%
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:

	2021		2020		2019
PPL	$	32.44	$	37.63	$	35.83
PPL Electric	32.92		38.64		35.68

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

	2021		2020		2019
PPL	$	30.08	$	34.95	$	30.89
PPL Electric	29.39		35.59		30.76

Performance Units, Activity Rollforward

TSR performance unit activity for 2021 was:

	TSR Performance Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	626,254	$	36.98
Granted	306,009	32.44
Vested	(53,340)	34.47
Forfeited (a)	(245,150)	37.75
Nonvested, end of period	633,773	34.68

	TSR Performance Units	Weighted- Average Grant Date Fair Value Per Share
PPL Electric
Nonvested, beginning of period	61,807	$	37.44
Transfer between registrants	(53,663)	37.42
Granted	10,010	32.92
Forfeited (a)	(2,800)	38.47
Nonvested, end of period	15,354	34.36

(a)Primarily related to the forfeiture of 2018 domestic performance units as performance during the period was below the minimum established performance threshold, which resulted in no payout.

ROE performance unit activity for 2021 was:

	ROE Performance Unit	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	728,664	$	32.81
Granted	572,571	30.08
Vested	(570,722)	32.02
Forfeited	(8,160)	30.44
Nonvested, end of period	722,353	31.28
PPL Electric
Nonvested, beginning of period	61,807	$	33.01
Transfer between registrants	(53,663)	33.00
Granted	12,895	29.39
Vested	(5,685)	32.27
Nonvested, end of period	15,354	30.27

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:

	2021		2020
PPL	$	16	$	8
PPL Electric	—		1

Stock Options, Activity Rollforward

Stock option activity for 2021 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	1,103,016	$	26.22
Exercised	(337,014)	25.42
Outstanding and exercisable at end of period	766,002	26.57		1	$	3

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, which for PPL Electric includes an allocation of PPL Services' expense, was:

	2021		2020		2019
PPL	$	34	$	28	$	35
PPL Electric	11		10		12

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

	2021		2020		2019
PPL	$	10	$	8	$	10
PPL Electric	3		3		3

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

At December 31, 2021, unrecognized compensation expense related to nonvested stock awards was:

	Unrecognized Compensation Expense		Weighted- Average Period for Recognition
PPL	$	19	1.7
PPL Electric	2		1.8

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	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	2	%	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:

	2021		2020		2019
PPL	$	28.00	$	35.30	$	31.95
PPL Electric	27.96		35.37		32.33

Restricted Stock and Restricted Stock Units, Activity Rollforward

Restricted stock unit activity for 2021 was:

	Restricted Shares/Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	896,336	$	32.56
Granted	458,610	28.00
Vested	(303,890)	30.57
Forfeited	(46,473)	30.23
Nonvested, end of period	1,004,583	31.19
PPL Electric
Nonvested, beginning of period	210,720	$	32.73
Transfer between registrants	(92,596)	32.99
Granted	51,587	27.96
Vested	(32,266)	29.98
Forfeited	(6,158)	32.16
Nonvested, end of period	131,287	31.50

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:

	2021		2020		2019
PPL	$	8	$	19	$	13
PPL Electric	1		3		2

Performance Units, Valuation Assumptions

The weighted-average assumptions used in the model were:

	2021	2020	2019
Expected stock volatility	27.81%	15.64%	17.57%
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:

	2021		2020		2019
PPL	$	32.44	$	37.63	$	35.83
PPL Electric	32.92		38.64		35.68

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

	2021		2020		2019
PPL	$	30.08	$	34.95	$	30.89
PPL Electric	29.39		35.59		30.76

Performance Units, Activity Rollforward

TSR performance unit activity for 2021 was:

	TSR Performance Units	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	626,254	$	36.98
Granted	306,009	32.44
Vested	(53,340)	34.47
Forfeited (a)	(245,150)	37.75
Nonvested, end of period	633,773	34.68

	TSR Performance Units	Weighted- Average Grant Date Fair Value Per Share
PPL Electric
Nonvested, beginning of period	61,807	$	37.44
Transfer between registrants	(53,663)	37.42
Granted	10,010	32.92
Forfeited (a)	(2,800)	38.47
Nonvested, end of period	15,354	34.36

(a)Primarily related to the forfeiture of 2018 domestic performance units as performance during the period was below the minimum established performance threshold, which resulted in no payout.

ROE performance unit activity for 2021 was:

	ROE Performance Unit	Weighted- Average Grant Date Fair Value Per Share
PPL
Nonvested, beginning of period	728,664	$	32.81
Granted	572,571	30.08
Vested	(570,722)	32.02
Forfeited	(8,160)	30.44
Nonvested, end of period	722,353	31.28
PPL Electric
Nonvested, beginning of period	61,807	$	33.01
Transfer between registrants	(53,663)	33.00
Granted	12,895	29.39
Vested	(5,685)	32.27
Nonvested, end of period	15,354	30.27

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:

	2021		2020
PPL	$	16	$	8
PPL Electric	—		1

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, which for PPL Electric includes an allocation of PPL Services' expense, was:

	2021		2020		2019
PPL	$	34	$	28	$	35
PPL Electric	11		10		12

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

	2021		2020		2019
PPL	$	10	$	8	$	10
PPL Electric	3		3		3

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

At December 31, 2021, unrecognized compensation expense related to nonvested stock awards was:

	Unrecognized Compensation Expense		Weighted- Average Period for Recognition
PPL	$	19	1.7
PPL Electric	2		1.8