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Income and Other Taxes (Income Tax Expense and Reconciliation of Income Tax Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
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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 |

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- Definition The component of total income tax expense for the period comprised of the net change in the entity's state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws specific to operating loss carryforwards. + References No definition available. + Details
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