Retirement and Postemployment Benefits (Weighted-Average Assumptions, Cost Trend Rates and Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan [Member]
Weighted Average Assumptions Used in the Valuation of the Benefit Obligations (Details) [Abstract]
Benefit obligations valuation discount rate	5.93%	5.52%
Benefit obligations valuation rate of compensation increase	3.43%	3.43%
Weighted Average Assumptions Used to Determine the Net Periodic Benefit Costs (Details) [Abstract]
Net periodic benefit costs discount rate	5.52%	5.52%	3.35%
Net periodic benefit costs rate of compensation increase	3.43%	3.43%	3.74%
Net periodic benefit costs expected return on plan assets	8.25%	8.25%	7.25%
Assumed Health Care Cost Trend Rates (Details) [Abstract]
Health care cost trend rate assumed for next year, obligations	7.00%	6.25%	6.50%
Health care cost trend rate assumed for next year, cost	6.25%	6.50%	6.25%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate), obligations	5.00%	5.00%	5.00%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate), cost	5.00%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate, obligations	2033	2029	2029
Year that the rate reaches the ultimate trend rate, cost	2029	2029	2027
Change in Benefit Obligation [Roll Forward]
Benefit Obligation, beginning of period	$ 3,454	$ 3,333
Service cost	35	34	$ 51
Interest cost	183	188	144
Participant contributions	0	0
Plan Amendments	(13)	3
Actuarial (gain) loss	(131)	179
Settlements	0	(3)
Gross benefits paid	(284)	(280)
Benefit Obligation, end of period	3,244	3,454	3,333
Change in Plan Assets [Roll Forward]
Balance at beginning of period	3,176	3,149
Actual return on plan assets	34	297
Employer contributions	10	13
Participant contributions	0	0
Settlements	0	(3)
Gross benefits paid	(284)	(280)
Balance at end of period	2,936	3,176	$ 3,149
Funded Status, end of period	(308)	(278)
Amounts recognized in the Balance Sheets consist of: [Abstract]
Noncurrent asset	19	7
Current liability	(10)	(10)
Noncurrent liability	(317)	(275)
Net amount recognized, end of period	(308)	(278)
Amounts recognized in AOCI and regulatory assets/liabilities (pre-tax): [Abstract]
Prior service cost (credit)	(6)	11
Net actuarial (gain) loss	1,164	1,017
Total	1,158	1,028
Total accumulated benefit obligation for defined benefit pension plans	3,116	3,312
Changes in Plan Assets and Benefit Obligations Recognized in AOCI and Regulatory Assets/Liabilities by Type (Details) [Abstract]
AOCI	283	235
Regulatory assets/liabilities	875	793
Total	1,158	1,028
Pension Plans Where the Projected or Accumulated Benefit Obligation Exceed the Fair Value of Plan Assets (Details) [Abstract]
Projected benefit obligations	2,719	2,891
Fair value of plan assets where the projected benefit obligations exceed the value of plan assets	2,392	2,606
Accumulated benefit obligation	2,618	1,773
Fair value of plan assets where the accumulated benefit obligations exceed the value of plan assets	2,392	1,594
Pension Plan [Member] | U.S. [Member]
Change in Benefit Obligation [Roll Forward]
Federal subsidy	0	0
Change in Plan Assets [Roll Forward]
Transfer out	$ 0	$ 0
Other Postretirement Benefits Plan [Member]
Weighted Average Assumptions Used in the Valuation of the Benefit Obligations (Details) [Abstract]
Benefit obligations valuation discount rate	5.91%	5.54%
Benefit obligations valuation rate of compensation increase	3.44%	3.43%
Weighted Average Assumptions Used to Determine the Net Periodic Benefit Costs (Details) [Abstract]
Net periodic benefit costs discount rate	5.54%	5.54%	3.54%
Net periodic benefit costs rate of compensation increase	3.43%	3.43%	2.84%
Net periodic benefit costs expected return on plan assets	7.28%	7.38%	6.52%
Change in Benefit Obligation [Roll Forward]
Benefit Obligation, beginning of period	$ 538	$ 534
Service cost	6	6	$ 7
Interest cost	29	30	20
Participant contributions	8	9
Plan Amendments	0	0
Actuarial (gain) loss	(4)	18
Settlements	0	0
Gross benefits paid	(56)	(59)
Federal subsidy	2	0
Benefit Obligation, end of period	523	538	534
Change in Plan Assets [Roll Forward]
Balance at beginning of period	438	417
Actual return on plan assets	25	54
Employer contributions	14	16
Participant contributions	7	7
Transfer out	(13)	0
Settlements	0	0
Gross benefits paid	(54)	(56)
Balance at end of period	417	438	$ 417
Funded Status, end of period	(106)	(100)
Amounts recognized in the Balance Sheets consist of: [Abstract]
Noncurrent asset	8	10
Current liability	(13)	(14)
Noncurrent liability	(101)	(96)
Net amount recognized, end of period	(106)	(100)
Amounts recognized in AOCI and regulatory assets/liabilities (pre-tax): [Abstract]
Prior service cost (credit)	9	10
Net actuarial (gain) loss	(90)	(96)
Total	(81)	(86)
Changes in Plan Assets and Benefit Obligations Recognized in AOCI and Regulatory Assets/Liabilities by Type (Details) [Abstract]
AOCI	16	14
Regulatory assets/liabilities	(97)	(100)
Total	(81)	(86)
PPL Electric Utilities Corp [Member] | Pension Plan [Member] | PPL Services Funded Status Allocation [Member]
Change in Plan Assets [Roll Forward]
Funded Status, end of period	(83)	(65)
PPL Electric Utilities Corp [Member] | Other Postretirement Benefits Plan [Member] | PPL Services Funded Status Allocation [Member]
Change in Plan Assets [Roll Forward]
Funded Status, end of period	(60)	(55)
Louisville Gas And Electric Co [Member] | Pension Plan [Member] | LKE Funded Status Allocation [Member]
Change in Plan Assets [Roll Forward]
Funded Status, end of period	29	34
Louisville Gas And Electric Co [Member] | Other Postretirement Benefits Plan [Member] | LKE Funded Status Allocation [Member]
Change in Plan Assets [Roll Forward]
Funded Status, end of period	(44)	(44)
Kentucky Utilities Co [Member] | Pension Plan [Member] | LKE Funded Status Allocation [Member]
Change in Plan Assets [Roll Forward]
Funded Status, end of period	46	51
Kentucky Utilities Co [Member] | Other Postretirement Benefits Plan [Member] | LKE Funded Status Allocation [Member]
Change in Plan Assets [Roll Forward]
Funded Status, end of period	$ (8)	$ (9)