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Income and Other Taxes (Income Tax Expense and Reconciliation of Income Tax Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Expense (Benefit) |  |  |
Current - Federal | $ (9) | $ (10) | $ (19)
Current - State | 24 | 19 | 17
Current - Foreign | 85 | 91 | 104
Total Current Expense | 100 | 100 | 102
Deferred - Federal | 123 | 139 | 203
Deferred - State | 94 | 76 | 100
Deferred - Foreign | 215 | 123 | 107
Total Deferred Expense (Benefit), excluding operating loss carry forwards | 432 | 338 | 410
Amortization of investment tax credit | (3) | (3) | (3)
Tax expense (benefit) of operating loss carryforwards [Abstract] |  |  |
Deferred - Federal | 6 | 7 | (20)
Deferred - State | (33) | (33) | (31)
Total Tax Expense (Benefit) of Operating Loss Carryforwards | (27) | (26) | (51)
Total income tax from continuing operations | 502 | 409 | 458
Income tax expense [Abstract] |  |  |
Total income tax expense - Federal | 117 | 133 | 161
Total income tax expense - State | 85 | 62 | 86
Total income tax expense - Foreign | 300 | 214 | 211
Total income tax from continuing operations | 502 | 409 | 458
Income Tax Expense (Benefit) Excluded From Income Taxes [Abstract] |  |  |
Other comprehensive income | (19) | (93) | (6)
Total income tax expense (benefits) excluded from incomes taxes from continuing operations | (19) | (93) | (6)
Reconciliation of Income Tax Expense |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate | 414 | 453 | 480
Increase (decrease) due to: |  |  |
State income taxes, net of federal income tax benefit | 48 | 45 | 40
Valuation allowance adjustments | 26 | 22 | 21
Impact of lower U.K. income tax rates | (26) | (25) | (25)
U.S. income tax on foreign earnings - net of foreign tax credit | 11 | 2 | 3
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount | (9) | 1 | 0
Impact of the United Kingdom Finance Acts on deferred tax balances | 101 | (14) | (13)
Depreciation and other items not normalized | (5) | (10) | (11)
Amortization of excess deferred federal and state income taxes | (43) | (40) | (37)
Interest benefit on United Kingdom financing entities | (12) | (12) | (17)
Deferred tax impact of Kentucky tax reform | 0 | 0 | 9
Kentucky recycling credit, net of federal income tax expense | 0 | (18) | 0
Other | (3) | 5 | 8
Total increase (decrease) | 88 | (44) | (22)
Total income tax from continuing operations | $ 502 | $ 409 | $ 458
Effective income tax rate | 25.50% | 19.00% | 20.00%
Expense related to increased Pennsylvania net operating loss carryforwards expected to be unutilized | $ 24 | $ 25 | $ 24
Taxes, other than income |  |  |
State gross receipts | 100 | 107 | 103
Foreign property | 127 | 127 | 134
Domestic property and other | 80 | 79 | 75
Total | 307 | 313 | 312
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, U.K. Finance Act 2020, Amount | 106 |  |
Foreign Tax Authority [Member] |  |  |
Income Tax Expense (Benefit) |  |  |
Deferred - Foreign | 106 |  |
PPL Electric Utilities Corp [Member] |  |  |
Income Tax Expense (Benefit) |  |  |
Current - Federal | 61 | 44 | 2
Current - State | 23 | 15 | 9
Total Current Expense | 84 | 59 | 11
Deferred - Federal | 45 | 51 | 96
Deferred - State | 38 | 39 | 37
Total Deferred Expense (Benefit), excluding operating loss carry forwards | 83 | 90 | 133
Tax expense (benefit) of operating loss carryforwards [Abstract] |  |  |
Deferred - Federal | 0 | 0 | (8)
Total Tax Expense (Benefit) of Operating Loss Carryforwards | 0 | 0 | (8)
Total income tax from continuing operations | 167 | 149 | 136
Income tax expense [Abstract] |  |  |
Total income tax expense - Federal | 106 | 95 | 90
Total income tax expense - State | 61 | 54 | 46
Total income tax from continuing operations | 167 | 149 | 136
Reconciliation of Income Tax Expense |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate | 139 | 127 | 119
Increase (decrease) due to: |  |  |
State income taxes, net of federal income tax benefit | 52 | 47 | 43
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount | (4) | 1 | 0
Depreciation and other items not normalized | (5) | (10) | (11)
Amortization of excess deferred federal and state income taxes | (16) | (18) | (17)
Other | 1 | 2 | 2
Total increase (decrease) | 28 | 22 | 17
Total income tax from continuing operations | $ 167 | $ 149 | $ 136
Effective income tax rate | 25.20% | 24.60% | 24.00%
Taxes, other than income |  |  |
State gross receipts | $ 100 | $ 107 | $ 103
Domestic property and other | 7 | 5 | 6
Total | 107 | 112 | 109
LG And E And KU Energy LLC [Member] |  |  |
Income Tax Expense (Benefit) |  |  |
Current - Federal | 41 | 20 | 31
Current - State | 1 | 0 | 4
Total Current Expense | 42 | 20 | 35
Deferred - Federal | 43 | 81 | 65
Deferred - State | 24 | 5 | 34
Total Deferred Expense (Benefit), excluding operating loss carry forwards | 67 | 86 | 99
Amortization of investment tax credit | (3) | (3) | (3)
Tax expense (benefit) of operating loss carryforwards [Abstract] |  |  |
Deferred - Federal | 0 | 0 | (2)
Total Tax Expense (Benefit) of Operating Loss Carryforwards | 0 | 0 | (2)
Total income tax from continuing operations | 106 | 103 | 129
Income tax expense [Abstract] |  |  |
Total income tax expense - Federal | 81 | 98 | 91
Total income tax expense - State | 25 | 5 | 38
Total income tax from continuing operations | 106 | 103 | 129
Income Tax Expense (Benefit) Excluded From Income Taxes [Abstract] |  |  |
Other comprehensive income | 2 | (1) | 5
Reconciliation of Income Tax Expense |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate | 117 | 120 | 121
Increase (decrease) due to: |  |  |
State income taxes, net of federal income tax benefit | 22 | 23 | 22
Valuation allowance adjustments | (28) | (23) | (20)
Amortization of investment tax credit | (3) | (3) | (3)
Deferred tax impact of Kentucky tax reform | 0 | 0 | 9
Kentucky recycling credit, net of federal income tax expense | 0 | (18) | 0
Other | (2) | 4 | 0
Total increase (decrease) | (11) | (17) | 8
Total income tax from continuing operations | $ 106 | $ 103 | $ 129
Effective income tax rate | 19.10% | 18.00% | 22.50%
Taxes, other than income |  |  |
Domestic property and other | $ 77 | $ 74 | $ 70
Total | 77 | 74 | 70
Louisville Gas And Electric Co [Member] |  |  |
Income Tax Expense (Benefit) |  |  |
Current - Federal | 53 | 4 | 0
Current - State | 7 | 4 | 4
Total Current Expense | 60 | 8 | 4
Deferred - Federal | (4) | 46 | 51
Deferred - State | 7 | 10 | 10
Total Deferred Expense (Benefit), excluding operating loss carry forwards | 3 | 56 | 61
Amortization of investment tax credit | (1) | (1) | (1)
Tax expense (benefit) of operating loss carryforwards [Abstract] |  |  |
Total income tax from continuing operations | 62 | 63 | 64
Income tax expense [Abstract] |  |  |
Total income tax expense - Federal | 48 | 49 | 50
Total income tax expense - State | 14 | 14 | 14
Total income tax from continuing operations | 62 | 63 | 64
Reconciliation of Income Tax Expense |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate | 64 | 62 | 62
Increase (decrease) due to: |  |  |
State income taxes, net of federal income tax benefit | 12 | 12 | 11
Valuation allowance adjustments | 0 | 14 | 0
Amortization of excess deferred federal and state income taxes | (11) | (10) | (8)
Kentucky recycling credit, net of federal income tax expense | 0 | (14) | 0
Other | (3) | (1) | (1)
Total increase (decrease) | (2) | 1 | 2
Total income tax from continuing operations | $ 62 | $ 63 | $ 64
Effective income tax rate | 20.30% | 21.40% | 21.50%
Taxes, other than income |  |  |
Domestic property and other | $ 40 | $ 39 | $ 36
Total | 40 | 39 | 36
Kentucky Utilities Co [Member] |  |  |
Income Tax Expense (Benefit) |  |  |
Current - Federal | 40 | 35 | 22
Current - State | 3 | 5 | 6
Total Current Expense | 43 | 40 | 28
Deferred - Federal | 11 | 28 | 40
Deferred - State | 11 | 13 | 10
Total Deferred Expense (Benefit), excluding operating loss carry forwards | 22 | 41 | 50
Amortization of investment tax credit | (2) | (2) | (2)
Tax expense (benefit) of operating loss carryforwards [Abstract] |  |  |
Total income tax from continuing operations | 63 | 79 | 76
Income tax expense [Abstract] |  |  |
Total income tax expense - Federal | 49 | 61 | 60
Total income tax expense - State | 14 | 18 | 16
Total income tax from continuing operations | 63 | 79 | 76
Reconciliation of Income Tax Expense |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate | 72 | 78 | 76
Increase (decrease) due to: |  |  |
State income taxes, net of federal income tax benefit | 14 | 15 | 13
Valuation allowance adjustments | 0 | 4 | 0
Amortization of investment tax credit | (2) | (2) | (2)
Amortization of excess deferred federal and state income taxes | (17) | (13) | (12)
Kentucky recycling credit, net of federal income tax expense | 0 | (4) | 0
Other | (4) | 1 | 1
Total increase (decrease) | (9) | 1 | 0
Total income tax from continuing operations | $ 63 | $ 79 | $ 76
Effective income tax rate | 18.40% | 21.20% | 21.00%
Taxes, other than income |  |  |
Domestic property and other | $ 37 | $ 35 | $ 34
Total | $ 37 | $ 35 | $ 34

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- Definition The portion of the difference between total income tax expense (benefit) as reported in the Income Statement for the current period and the expected income tax expense (benefit) computed attributable to the amortization of excess deferred income taxes due to a change in the federal corporate income tax rate. + References No definition available. + Details
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- Definition The component of total income tax expense for the period comprised of the net change during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law specific to operating loss carryforwards. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations specific to operating loss carryforwards. + References No definition available. + Details
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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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- Definition The portion of the difference between total income tax expense (benefit) as reported in the Income Statement and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the state regulatory treatment of depreciation-related timing differences. + References No definition available. + Details
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- Definition Income Tax Expense (Benefit) Excluded From Income Taxes [Abstract] + References No definition available. + Details
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- Definition The portion of the difference between total income tax expense (benefit) as reported in the Income Statement and the expected income tax expense (benefit) computed attributable to changes in the amount of foreign income tax benefits related to interest expense on intercompany loans for which there was no domestic income tax expense. + References No definition available. + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expenses (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to recycling tax credits. + References No definition available. + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increased net operating loss carryforwards expected to be unutilized. + References No definition available. + Details
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- Definition The portion of the difference between total income tax expense (benefit) as reported in the Income Statement for the current period and the expected income tax expense (benefit) computed attributable due to the reduction in the future estimated state tax rate that was impacted by a state tax change + References No definition available. + Details
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- Definition Federal, state, and foreign tax expense (benefits) recorded to other comprehensive income is not a component of income tax expense from continuing operations on the Statement of Income. + References No definition available. + Details
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- Definition The total of increases (decreases) to federal income tax on income from continuing operations before income taxes at statutory tax rate. + References No definition available. + Details
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