Income and Other Taxes (Income Tax Expense and Reconciliation of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Expense (Benefit)
Current - Federal	$ (175)	$ (2)	$ (1)
Current - State	37	24	36
Current - Foreign	0	0	(1)
Total Current Expense	(138)	22	34
Deferred - Federal	286	122	28
Deferred - State	48	68	105
Deferred - Foreign	0	0	383
Total Deferred Expense (Benefit), excluding operating loss carry forwards	334	190	516
Amortization of investment tax credit	(3)	(3)	(3)
Tax expense (benefit) of operating loss carryforwards [Abstract]
Deferred - Federal	3	2	12
Deferred - State	(12)	(10)	(56)
Total Tax Expense (Benefit) of Operating Loss Carryforwards	(9)	(8)	(44)
Total income tax from continuing operations	184	201	503
Income tax expense [Abstract]
Total income tax expense - Federal	111	119	36
Total income tax expense - State	73	82	85
Total income tax expense - Foreign	0	0	382
Total income tax from continuing operations	184	201	503
Income Tax Expense (Benefit) Excluded From Income Taxes [Abstract]
Income tax related to other comprehensive income	(14)	11	150
Valuation allowance on state deferred taxes recorded to other comprehensive income	(1)	0	0
Total income tax expense (benefits) excluded from income taxes from continuing operations	(15)	(31)	1,569
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	194	192	109
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	58	68	23
Valuation allowance adjustments	12	9	48
Income tax credits	(22)	(3)	(2)
Impact of the United Kingdom Finance Acts on deferred tax balances	0	0	383
Depreciation and other items not normalized	(10)	(8)	(5)
Amortization of excess deferred federal and state income taxes	(48)	(54)	(54)
Other	(1)	(8)	(5)
Total increase (decrease)	(10)	9	394
Total income tax from continuing operations	$ 184	$ 201	$ 503
Effective income tax rate	19.90%	22.00%	96.50%
Expense related to increased Pennsylvania net operating loss carryforwards expected to be unutilized	$ 11	$ 5	$ 15
Taxes, other than income
State gross receipts	195	175	113
Domestic property and other	197	157	94
Total	392	332	207
Deferred Tax Assets, Valuation Allowances	245	213
Reclassification from AOCI due to sale of UK utility business	0	0	660
Nondeductible officers salary	1	5	6
Renewable Tax Credits Utilized	250
WPD [Member]
Taxes, other than income
Income tax related to Discontinued Operations	0	(42)	759
PPL Electric Utilities Corp [Member]
Income Tax Expense (Benefit)
Current - Federal	91	63	40
Current - State	31	20	35
Total Current Expense	122	83	75
Deferred - Federal	28	60	59
Deferred - State	18	31	20
Total Deferred Expense (Benefit), excluding operating loss carry forwards	46	91	79
Tax expense (benefit) of operating loss carryforwards [Abstract]
Total income tax from continuing operations	168	174	154
Income tax expense [Abstract]
Total income tax expense - Federal	119	123	99
Total income tax expense - State	49	51	55
Total income tax from continuing operations	168	174	154
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	144	147	126
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	49	54	46
Depreciation and other items not normalized	(9)	(7)	(5)
Amortization of excess deferred federal and state income taxes	(11)	(12)	(14)
Other	(5)	1	1
Total increase (decrease)	24	27	28
Total income tax from continuing operations	$ 168	$ 174	$ 154
Effective income tax rate	24.50%	24.90%	25.70%
Taxes, other than income
State gross receipts	$ 136	$ 142	$ 113
Domestic property and other	7	7	7
Total	143	149	120
Effective Income Tax Rate Reconciliation, Change in Enacted State Tax Rate, Amount	0	(9)	0
PPL Electric Utilities Corp [Member] | Deferred Tax Benefit
Taxes, other than income
Effective Income Tax Rate Reconciliation, Change in Enacted State Tax Rate, Amount		9
Louisville Gas And Electric Co [Member]
Income Tax Expense (Benefit)
Current - Federal	70	60	41
Current - State	13	9	5
Total Current Expense	83	69	46
Deferred - Federal	(15)	(10)	1
Deferred - State	2	5	8
Total Deferred Expense (Benefit), excluding operating loss carry forwards	(13)	(5)	9
Amortization of investment tax credit	(1)	(1)	(1)
Tax expense (benefit) of operating loss carryforwards [Abstract]
Total income tax from continuing operations	69	63	54
Income tax expense [Abstract]
Total income tax expense - Federal	54	49	41
Total income tax expense - State	15	14	13
Total income tax from continuing operations	69	63	54
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	70	70	64
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	13	13	12
Amortization of excess deferred federal and state income taxes	(13)	(18)	(20)
Other	(1)	(2)	(2)
Total increase (decrease)	(1)	(7)	(10)
Total income tax from continuing operations	$ 69	$ 63	$ 54
Effective income tax rate	20.60%	18.80%	17.80%
Taxes, other than income
Domestic property and other	$ 48	$ 48	$ 46
Total	48	48	46
Deferred Tax Assets, Valuation Allowances	8	9
Kentucky Utilities Co [Member]
Income Tax Expense (Benefit)
Current - Federal	73	63	58
Current - State	13	11	8
Total Current Expense	86	74	66
Deferred - Federal	(11)	(3)	(4)
Deferred - State	4	7	7
Total Deferred Expense (Benefit), excluding operating loss carry forwards	(7)	4	3
Amortization of investment tax credit	(2)	(2)	(2)
Tax expense (benefit) of operating loss carryforwards [Abstract]
Total income tax from continuing operations	77	76	67
Income tax expense [Abstract]
Total income tax expense - Federal	60	58	52
Total income tax expense - State	17	18	15
Total income tax from continuing operations	77	76	67
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	82	84	76
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	15	16	14
Amortization of investment tax credit	(2)	(2)	(2)
Amortization of excess deferred federal and state income taxes	(17)	(21)	(20)
Other	(1)	(1)	(1)
Total increase (decrease)	(5)	(8)	(9)
Total income tax from continuing operations	$ 77	$ 76	$ 67
Effective income tax rate	19.80%	19.10%	18.40%
Taxes, other than income
Domestic property and other	$ 45	$ 45	$ 41
Total	45	45	$ 41
Deferred Tax Assets, Valuation Allowances	$ 2	$ 3