Retirement and Postemployment Benefits (Weighted-Average Assumptions, Cost Trend Rates and Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plan [Member]
Weighted Average Assumptions Used in the Valuation of the Benefit Obligations (Details) [Abstract]
Benefit obligations valuation discount rate	5.80%	3.15%
Benefit obligations valuation rate of compensation increase	3.77%	3.76%
Weighted Average Assumptions Used to Determine the Net Periodic Benefit Costs (Details) [Abstract]
Net periodic benefit costs discount rate	3.35%	2.92%	3.64%
Net periodic benefit costs rate of compensation increase	3.74%	3.76%	3.79%
Net periodic benefit costs expected return on plan assets	7.25%	7.25%	7.25%
Assumed Health Care Cost Trend Rates (Details) [Abstract]
Health care cost trend rate assumed for next year, obligations	6.50%	6.25%	6.50%
Health care cost trend rate assumed for next year, cost	6.25%	6.50%	6.60%
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	2029	2027	2027
Year that the rate reaches the ultimate trend rate, cost	2027	2027	2024
Change in Benefit Obligation [Roll Forward]
Benefit Obligation, beginning of period	$ 3,989	$ 4,251
Service cost	51	56	$ 56
Interest cost	144	121	146
Participant contributions	0	0
Plan Amendments	0	2
Actuarial (gain) loss	(1,026)	(88)
Acquisition	553	0
Settlements	(111)	(106)
Gross benefits paid	(267)	(247)
Benefit Obligation, end of period	3,333	3,989	4,251
Change in Plan Assets [Roll Forward]
Balance at beginning of period	3,887	4,068
Actual return on plan assets	(992)	125
Employer contributions	9	47
Participant contributions	0	0
Acquisition	623	0
Settlements	(111)	(106)
Gross benefits paid	(267)	(247)
Balance at end of period	3,149	3,887	$ 4,068
Funded Status, end of period	(184)	(102)
Amounts recognized in the Balance Sheets consist of: [Abstract]
Noncurrent asset	33	91
Current liability	(10)	(10)
Noncurrent liability	(207)	(183)
Net amount recognized, end of period	(184)	(102)
Amounts recognized in AOCI and regulatory assets/liabilities (pre-tax): [Abstract]
Prior service cost (credit)	14	22
Net actuarial (gain) loss	827	626
Total	841	648
Total accumulated benefit obligation for defined benefit pension plans	3,197	3,786
Changes in Plan Assets and Benefit Obligations Recognized in AOCI and Regulatory Assets/Liabilities by Type (Details) [Abstract]
AOCI	183	239
Regulatory assets/liabilities	658	409
Total	841	648
Pension Plans Where the Projected or Accumulated Benefit Obligation Exceed the Fair Value of Plan Assets (Details) [Abstract]
Projected benefit obligations	2,818	193
Fair value of plan assets where the projected benefit obligations exceed the value of plan assets	2,601	0
Accumulated benefit obligation	1,720	177
Fair value of plan assets where the accumulated benefit obligations exceed the value of plan assets	$ 1,581	$ 0
Other Postretirement Benefits Plan [Member]
Weighted Average Assumptions Used in the Valuation of the Benefit Obligations (Details) [Abstract]
Benefit obligations valuation discount rate	5.81%	3.13%
Benefit obligations valuation rate of compensation increase	3.78%	3.77%
Weighted Average Assumptions Used to Determine the Net Periodic Benefit Costs (Details) [Abstract]
Net periodic benefit costs discount rate	3.54%	2.84%	3.60%
Net periodic benefit costs rate of compensation increase	2.84%	3.75%	3.76%
Net periodic benefit costs expected return on plan assets	6.52%	6.48%	6.44%
Change in Benefit Obligation [Roll Forward]
Benefit Obligation, beginning of period	$ 504	$ 573
Service cost	7	6	$ 6
Interest cost	20	16	19
Participant contributions	9	14
Plan Amendments	0	0
Actuarial (gain) loss	(114)	(50)
Acquisition	163	0
Settlements	0	0
Gross benefits paid	(55)	(55)
Benefit Obligation, end of period	534	504	573
Change in Plan Assets [Roll Forward]
Balance at beginning of period	367	367
Actual return on plan assets	(86)	25
Employer contributions	19	18
Participant contributions	7	11
Acquisition	160	0
Settlements	0	0
Gross benefits paid	(50)	(54)
Balance at end of period	417	367	$ 367
Funded Status, end of period	(117)	(137)
Amounts recognized in the Balance Sheets consist of: [Abstract]
Noncurrent asset	9	0
Current liability	(14)	(15)
Noncurrent liability	(112)	(122)
Net amount recognized, end of period	(117)	(137)
Amounts recognized in AOCI and regulatory assets/liabilities (pre-tax): [Abstract]
Prior service cost (credit)	11	12
Net actuarial (gain) loss	(95)	(51)
Total	(84)	(39)
Changes in Plan Assets and Benefit Obligations Recognized in AOCI and Regulatory Assets/Liabilities by Type (Details) [Abstract]
AOCI	13	(2)
Regulatory assets/liabilities	(97)	(37)
Total	(84)	(39)
PPL Electric Utilities Corp [Member]
Amounts recognized in the Balance Sheets consist of: [Abstract]
Noncurrent asset	0	50
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	(34)	42
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)	(78)
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	41	85
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	(41)	(51)
Kentucky Utilities Co [Member] | Pension Plan [Member] | LKE Funded Status Allocation [Member]
Change in Plan Assets [Roll Forward]
Funded Status, end of period	44	75
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	$ (9)	$ (6)