Income and Other Taxes (Income Tax Expense and Reconciliation of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Expense (Benefit)
Current - Federal	$ 23	$ (175)	$ (2)
Current - State	9	37	24
Total Current Expense	32	(138)	22
Deferred - Federal	137	286	122
Deferred - State	64	48	68
Total Deferred Expense (Benefit), excluding operating loss carry forwards	201	334	190
Amortization of investment tax credit	(3)	(3)	(3)
Tax expense (benefit) of operating loss carryforwards [Abstract]
Deferred - Federal	1	3	2
Deferred - State	(3)	(12)	(10)
Total Tax Expense (Benefit) of Operating Loss Carryforwards	(2)	(9)	(8)
Total income tax from continuing operations	228	184	201
Income tax expense [Abstract]
Total income tax expense - Federal	158	111	119
Total income tax expense - State	70	73	82
Total income tax from continuing operations	228	184	201
Income Tax Expense (Benefit) Excluded From Income Taxes [Abstract]
Income tax related to other comprehensive income	(8)	(14)	11
Valuation allowance on state deferred taxes recorded to other comprehensive income	0	(1)	0
Total income tax expense (benefits) excluded from income taxes from continuing operations	(8)	(15)	(31)
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	234	194	192
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	65	58	68
Valuation allowance adjustments	2	12	9
Income tax credits	(8)	(22)	(3)
Depreciation and other items not normalized	(21)	(10)	(8)
Amortization of excess deferred federal and state income taxes	(45)	(48)	(54)
Other	1	0	(3)
Total increase (decrease)	(6)	(10)	9
Total income tax from continuing operations	$ 228	$ 184	$ 201
Effective income tax rate	20.40%	19.90%	22.00%
Expense related to increased Pennsylvania net operating loss carryforwards expected to be unutilized	$ 3	$ 11	$ 5
Taxes, other than income
State gross receipts	167	195	175
Domestic property and other	207	197	157
Total	374	392	332
Deferred Tax Assets, Valuation Allowances	224	245
Renewable Tax Credits Utilized		250
Renewable Tax Credits Purchased		300
WPD [Member]
Taxes, other than income
Income tax related to Discontinued Operations	0	0	(42)
PPL Electric Utilities Corp [Member]
Income Tax Expense (Benefit)
Current - Federal	44	91	63
Current - State	4	31	20
Total Current Expense	48	122	83
Deferred - Federal	86	28	60
Deferred - State	42	18	31
Total Deferred Expense (Benefit), excluding operating loss carry forwards	128	46	91
Tax expense (benefit) of operating loss carryforwards [Abstract]
Total income tax from continuing operations	176	168	174
Income tax expense [Abstract]
Total income tax expense - Federal	130	119	123
Total income tax expense - State	46	49	51
Total income tax from continuing operations	176	168	174
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	158	144	147
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	47	49	54
Depreciation and other items not normalized	(16)	(9)	(7)
Amortization of excess deferred federal and state income taxes	(10)	(11)	(12)
Other	(3)	(5)	1
Total increase (decrease)	18	24	27
Total income tax from continuing operations	$ 176	$ 168	$ 174
Effective income tax rate	23.50%	24.50%	24.90%
Taxes, other than income
State gross receipts	$ 122	$ 136	$ 142
Domestic property and other	9	7	7
Total	131	143	149
Effective Income Tax Rate Reconciliation, Change in Enacted State Tax Rate, Amount	0	0	(9)
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	60	70	60
Current - State	11	13	9
Total Current Expense	71	83	69
Deferred - Federal	1	(15)	(10)
Deferred - State	6	2	5
Total Deferred Expense (Benefit), excluding operating loss carry forwards	7	(13)	(5)
Amortization of investment tax credit	(1)	(1)	(1)
Tax expense (benefit) of operating loss carryforwards [Abstract]
Total income tax from continuing operations	77	69	63
Income tax expense [Abstract]
Total income tax expense - Federal	60	54	49
Total income tax expense - State	17	15	14
Total income tax from continuing operations	77	69	63
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	79	70	70
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	14	13	13
Amortization of excess deferred federal and state income taxes	(13)	(13)	(18)
Other	(3)	(1)	(2)
Total increase (decrease)	(2)	(1)	(7)
Total income tax from continuing operations	$ 77	$ 69	$ 63
Effective income tax rate	20.60%	20.60%	18.80%
Taxes, other than income
Domestic property and other	$ 49	$ 48	$ 48
Total	49	48	48
Deferred Tax Assets, Valuation Allowances	6	8
Kentucky Utilities Co [Member]
Income Tax Expense (Benefit)
Current - Federal	87	73	63
Current - State	17	13	11
Total Current Expense	104	86	74
Deferred - Federal	(15)	(11)	(3)
Deferred - State	2	4	7
Total Deferred Expense (Benefit), excluding operating loss carry forwards	(13)	(7)	4
Amortization of investment tax credit	(2)	(2)	(2)
Tax expense (benefit) of operating loss carryforwards [Abstract]
Total income tax from continuing operations	89	77	76
Income tax expense [Abstract]
Total income tax expense - Federal	70	60	58
Total income tax expense - State	19	17	18
Total income tax from continuing operations	89	77	76
Reconciliation of Income Tax Expense
Federal income tax on Income Before Income Taxes at statutory tax rate	93	82	84
Increase (decrease) due to:
State income taxes, net of federal income tax benefit	16	15	16
Amortization of investment tax credit	(2)	(2)	(2)
Amortization of excess deferred federal and state income taxes	(17)	(17)	(21)
Other	(1)	(1)	(1)
Total increase (decrease)	(4)	(5)	(8)
Total income tax from continuing operations	$ 89	$ 77	$ 76
Effective income tax rate	20.00%	19.80%	19.10%
Taxes, other than income
Domestic property and other	$ 49	$ 45	$ 45
Total	49	45	$ 45
Deferred Tax Assets, Valuation Allowances	$ 2	$ 2