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Income and Other Taxes (Tables) | 12 Months Ended
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Dec. 31, 2024
Income Taxes [Line Items] |
Components of Deferred Tax Assets and Liabilities | Significant components of PPL's deferred income tax assets and liabilities were as follows:
| 2024 |  | 2023
Deferred Tax Assets |  |  |
Deferred investment tax credits | 28 |  |  | 28 |
Regulatory liabilities | 133 |  |  | 123 |
Income taxes due to customers | 418 |  |  | 436 |
Accrued pension and postretirement costs | 112 |  |  | 101 |
State loss carryforwards | 224 |  |  | 253 |
Federal and state tax credit carryforwards | 24 |  |  | 67 |
Internal Revenue Code Section 197 intangibles | 72 |  |  | 78 |
Contributions in aid of construction | 163 |  |  | 149 |
Bad debt | 37 |  |  | 28 |
Other | 114 |  |  | 111 |
Valuation allowances | (224) |  |  | (245) |
Total deferred tax assets | 1,101 |  |  | 1,129 |
Deferred Tax Liabilities |  |  |
Plant - net | 3,898 |  |  | 3,749 |
Regulatory assets | 432 |  |  | 376 |
Prepayments | 39 |  |  | 47 |
Goodwill | 38 |  |  | 22 |
Other | 38 |  |  | 30 |
Total deferred tax liabilities | 4,445 |  |  | 4,224 |
Net deferred tax liability | $ | 3,344 |  |  | $ | 3,095 |
Summary of Operating Loss Carryforwards and Tax Credit Carryforwards | At December 31, 2024, PPL had the following loss and tax credit carryforwards, related deferred tax assets and valuation allowances recorded against the deferred tax assets:
| Gross |  | Deferred Tax Asset |  | Valuation Allowance |  | Expiration
Loss and other carryforwards |  |  |  |  |  |  |
State net operating losses | $ | 5,011 |  |  | $ | 224 |  |  | $ | (221) |  |  | 2025-2044
State charitable contributions | 10 |  |  | 1 |  |  | (1) |  |  | 2025-2029
Foreign capital loss | 8 |  |  | 2 |  |  | (2) |  |  | Indefinite
| Gross |  | Deferred Tax Asset |  | Valuation Allowance |  | Expiration
Credit carryforwards |  |  |  |  |  |  |
Federal - other |  |  | 14 |  |  | — |  |  | 2044
State recycling credit |  |  | 8 |  |  | — |  |  | 2028
State - other |  |  | 2 |  |  | — |  |  | Indefinite
Schedule of Valuation and Qualifying Accounts of Deferred Tax Assets | The changes in deferred tax valuation allowances were as follows:
|  |  | Additions |  |  |  |
| Balance at Beginning of Period |  | Charged to Income |  | Charged to Other Accounts |  | Deductions |  | Balance at End of Period
2024 | $ | 245 |  |  | $ | 3 |  |  | $ | 1 |  |  | $ | 25 |  | (a) | $ | 224 |
2023 | 213 |  |  | 54 |  | (b) | — |  |  | 22 |  | (c) | 245 |
2022 | 462 |  |  | 10 |  |  | — |  |  | 259 |  | (d) | 213 |
(a)In 2024, PPL recorded a $23 million decrease in a valuation allowance on a 2004 state net operating loss carryforward that expired in 2024. (b)PPL has a Pennsylvania net operating loss fully offset by a valuation allowance. In 2023, PPL adjusted the net operating loss and related valuation allowance to be recorded at the current estimate of the applicable rate at which each portion of the net operating loss that will expire and be written off as the rate is reduced annually by one half a percentage point until the rate reaches to 4.99% in 2031. (c)In 2023, PPL recorded a $22 million decrease in a valuation allowance on a 2003 state net operating loss carryforward that expired in 2023. (d)In 2022, PPL recorded a $36 million decrease in a valuation allowance on a 2002 state net operating loss carryforward that expired in 2022 and a $213 million decrease in the valuation allowance due to the Pennsylvania rate change. See reconciliation of income tax table below.
Components of Income Tax Expense (Benefit) | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were as follows:
| 2024 |  | 2023 |  | 2022
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal (a) | $ | 23 |  |  | $ | (175) |  |  | $ | (2) |
Current - State | 9 |  |  | 37 |  |  | 24 |
Total Current Expense (Benefit) | 32 |  |  | (138) |  |  | 22 |
Deferred - Federal (a) | 137 |  |  | 286 |  |  | 122 |
Deferred - State | 64 |  |  | 48 |  |  | 68 |
Total Deferred Expense (Benefit), excluding operating loss carryforwards | 201 |  |  | 334 |  |  | 190 |
Amortization of investment tax credit | (3) |  |  | (3) |  |  | (3) |
Tax expense (benefit) of operating loss carryforwards |  |  |  |  |
Deferred - Federal | 1 |  |  | 3 |  |  | 2 |
Deferred - State | (3) |  |  | (12) |  |  | (10) |
Total Tax Expense (Benefit) of Operating Loss Carryforwards | (2) |  |  | (9) |  |  | (8) |
Total income tax expense (benefit) | $ | 228 |  |  | $ | 184 |  |  | $ | 201 |
Total income tax expense (benefit) - Federal | $ | 158 |  |  | $ | 111 |  |  | $ | 119 |
Total income tax expense (benefit) - State | 70 |  |  | 73 |  |  | 82 |
Total income tax expense (benefit) | $ | 228 |  |  | $ | 184 |  |  | $ | 201 |
(a)In 2023, PPL purchased approximately $300 million of renewable tax credits and recorded a current tax benefit and a deferred tax expense for utilization of approximately $250 million of the credits in 2023 and prior years, per the three-year carry-back rule. In the table above, the following income tax expense (benefit) are excluded from income taxes:
| 2024 |  | 2023 |  | 2022
Discontinued operations | $ | — |  |  | $ | — |  |  | $ | (42) |
Other comprehensive income | (8) |  |  | (14) |  |  | 11 |
Valuation allowance recorded to other comprehensive income | — |  |  | (1) |  |  | — |
Total | $ | (8) |  |  | $ | (15) |  |  | $ | (31) |
Reconciliation of Income Tax Expense Derived From Statutory Tax Rate | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were as follows:
| 2024 |  | 2023 |  | 2022
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 234 |  | $ | 194 |  | $ | 192
State income taxes, net of federal income tax benefit | 65 |  | 58 |  | 68
Valuation allowance adjustments (a) | 2 |  | 12 |  | 9
Income tax credits (b) | (8) |  | (22) |  | (3)
Utility rate-making tax adjustments (c) | (21) |  | (10) |  | (8)
Amortization of excess deferred federal and state income taxes | (45) |  | (48) |  | (54)
Other | 1 |  | — |  | (3)
Total increase (decrease) | (6) |  | (10) |  | 9
Total income tax expense (benefit) | $ | 228 |  | $ | 184 |  | $ | 201
Effective income tax rate | 20.4% |  | 19.9% |  | 22.0%
(a)In 2024, 2023, and 2022, PPL recorded deferred income tax expense of $3 million, $11 million and $5 million for valuation allowances primarily related to increased Pennsylvania net operating loss carryforwards expected to be unutilized. (b)In 2023, PPL purchased approximately $300 million of renewable tax credits and recorded a current tax benefit and a deferred tax expense for utilization of approximately $250 million of the credits in 2023 and prior years, per the three-year carry-back rule. (c)Primarily consists of tax impacts of AFUDC equity and related depreciation across PPL utilities and flow through tax impacts. Flow through occurs when the regulator excludes deferred tax expense or benefit from recoverable costs when determining income tax expense.
Details of Taxes Other Than Income | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were as follows:
| 2024 |  | 2023 |  | 2022
Taxes, other than income |  |  |  |  |
State gross earnings and state gross receipts | $ | 167 |  |  | $ | 195 |  |  | $ | 175 |
Property and other | 207 |  |  | 197 |  |  | 157 |
Total | $ | 374 |  |  | $ | 392 |  |  | $ | 332 |
PPL Electric Utilities Corp [Member] |
Income Taxes [Line Items] |
Components of Deferred Tax Assets and Liabilities | Significant components of PPL Electric's deferred income tax assets and liabilities were as follows:
| 2024 |  | 2023
Deferred Tax Assets |  |  |
Accrued pension and postretirement costs | $ | 36 |  |  | $ | 30 |
Contributions in aid of construction | 120 |  |  | 105 |
Regulatory liabilities | 40 |  |  | 43 |
Income taxes due to customers | 184 |  |  | 191 |
Other | 22 |  |  | 27 |
Total deferred tax assets | 402 |  |  | 396 |
Deferred Tax Liabilities |  |  |
Electric utility plant - net | 1,934 |  |  | 1,810 |
Regulatory assets | 160 |  |  | 119 |
Prepayments | 30 |  |  | 36 |
Other | 4 |  |  | 4 |
Total deferred tax liabilities | 2,128 |  |  | 1,969 |
Net deferred tax liability | $ | 1,726 |  |  | $ | 1,573 |
Components of Income Tax Expense (Benefit) | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were as follows:
| 2024 |  | 2023 |  | 2022
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal | $ | 44 |  |  | $ | 91 |  |  | $ | 63 |
Current - State | 4 |  |  | 31 |  |  | 20 |
Total Current Expense (Benefit) | 48 |  |  | 122 |  |  | 83 |
Deferred - Federal | 86 |  |  | 28 |  |  | 60 |
Deferred - State | 42 |  |  | 18 |  |  | 31 |
Total Deferred Expense (Benefit), excluding operating loss carryforwards | 128 |  |  | 46 |  |  | 91 |
Total income tax expense (benefit) | $ | 176 |  |  | $ | 168 |  |  | $ | 174 |
Total income tax expense (benefit) - Federal | $ | 130 |  |  | $ | 119 |  |  | $ | 123 |
Total income tax expense (benefit) - State | 46 |  |  | 49 |  |  | 51 |
Total income tax expense (benefit) | $ | 176 |  |  | $ | 168 |  |  | $ | 174 |
Reconciliation of Income Tax Expense Derived From Statutory Tax Rate | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were as follows:
| 2024 |  | 2023 |  | 2022
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 158 |  | $ | 144 |  | $ | 147
Increase (decrease) due to: |  |  |  |  |
State income taxes, net of federal income tax benefit | 47 |  | 49 |  | 54
Utility rate-making tax adjustments (a) | (16) |  | (9) |  | (7)
Amortization of excess deferred federal income taxes (b) | (10) |  | (11) |  | (12)
State income tax rate change (c) | — |  | — |  | (9)
Other | (3) |  | (5) |  | 1
Total increase (decrease) | 18 |  | 24 |  | 27
Total income tax expense (benefit) | $ | 176 |  | $ | 168 |  | $ | 174
Effective income tax rate | 23.5% |  | 24.5% |  | 24.9%
(a)Primarily consists of tax impacts of AFUDC equity and related depreciation across PPL utilities and flow through tax impacts. Flow through occurs when the regulator excludes deferred tax expense or benefit from recoverable costs when determining income tax expense. (b)In 2024, 2023, and 2022, PPL Electric recorded lower income tax expense for the amortization of excess deferred taxes that primarily resulted from the U.S. federal corporate income tax rate reduction from 35% to 21% enacted by the TCJA. This amortization represents each year's refund amount, prior to a tax gross-up, to be paid to customers for previously collected deferred taxes at higher income tax rates. (c)2022 includes a deferred tax benefit of $9 million due to the corporate net income tax rate reduction.
Details of Taxes Other Than Income | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were as follows:
| 2024 |  | 2023 |  | 2022
Taxes, other than income |  |  |  |  |
State gross receipts | $ | 122 |  |  | $ | 136 |  |  | $ | 142 |
Property and other | 9 |  |  | 7 |  |  | 7 |
Total | $ | 131 |  |  | $ | 143 |  |  | $ | 149 |
Louisville Gas And Electric Co [Member] |
Income Taxes [Line Items] |
Components of Deferred Tax Assets and Liabilities | Significant components of LG&E's deferred income tax assets and liabilities were as follows:
| 2024 |  | 2023
Deferred Tax Assets |  |  |
Contributions in aid of construction | $ | 18 |  |  | $ | 18 |
Regulatory liabilities | 18 |  |  | 19 |
Accrued pension and postretirement costs | 4 |  |  | 3 |
Deferred investment tax credits | 7 |  |  | 8 |
Income taxes due to customers | 110 |  |  | 115 |
State tax credit carryforwards | 6 |  |  | 8 |
Lease liabilities | 4 |  |  | 4 |
Valuation allowances | (6) |  |  | (8) |
Other | 6 |  |  | 8 |
Total deferred tax assets | 167 |  |  | 175 |
Deferred Tax Liabilities |  |  |
Plant - net | 875 |  |  | 877 |
Regulatory assets | 88 |  |  | 67 |
Lease right-of-use assets | 4 |  |  | 3 |
Other | 3 |  |  | 4 |
Total deferred tax liabilities | 970 |  |  | 951 |
Net deferred tax liability | $ | 803 |  |  | $ | 776 |
Components of Income Tax Expense (Benefit) | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were:
| 2024 |  | 2023 |  | 2022
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal | $ | 60 |  |  | $ | 70 |  |  | $ | 60 |
Current - State | 11 |  |  | 13 |  |  | 9 |
Total Current Expense (Benefit) | 71 |  |  | 83 |  |  | 69 |
Deferred - Federal | 1 |  |  | (15) |  |  | (10) |
Deferred - State | 6 |  |  | 2 |  |  | 5 |
Total Deferred Expense (Benefit) | 7 |  |  | (13) |  |  | (5) |
Amortization of investment tax credit - Federal | (1) |  |  | (1) |  |  | (1) |
Total income tax expense (benefit) | $ | 77 |  |  | $ | 69 |  |  | $ | 63 |
Total income tax expense (benefit) - Federal | $ | 60 |  |  | $ | 54 |  |  | $ | 49 |
Total income tax expense (benefit) - State | 17 |  |  | 15 |  |  | 14 |
Total income tax expense (benefit) | $ | 77 |  |  | $ | 69 |  |  | $ | 63 |
Reconciliation of Income Tax Expense Derived From Statutory Tax Rate | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were:
| 2024 |  | 2023 |  | 2022
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 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 expense (benefit) | $ | 77 |  | $ | 69 |  | $ | 63
Effective income tax rate | 20.6% |  | 20.6% |  | 18.8%
Details of Taxes Other Than Income | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were:
| 2024 |  | 2023 |  | 2022
Taxes, other than income |  |  |  |  |
Property and other | $ | 49 |  |  | $ | 48 |  |  | $ | 48 |
Total | $ | 49 |  |  | $ | 48 |  |  | $ | 48 |
Kentucky Utilities Co [Member] |
Income Taxes [Line Items] |
Components of Deferred Tax Assets and Liabilities | Significant components of KU's deferred income tax assets and liabilities were as follows:
| 2024 |  | 2023
Deferred Tax Assets |  |  |
Contributions in aid of construction | $ | 12 |  |  | $ | 10 |
Regulatory liabilities | 29 |  |  | 23 |
Deferred investment tax credits | 20 |  |  | 21 |
Income taxes due to customers | 124 |  |  | 131 |
State tax credit carryforwards | 4 |  |  | 4 |
Lease liabilities | 6 |  |  | 5 |
Valuation allowances | (2) |  |  | (2) |
Other | 4 |  |  | 5 |
Total deferred tax assets | 197 |  |  | 197 |
Deferred Tax Liabilities |  |  |
Plant - net | 1,053 |  |  | 1,045 |
Regulatory assets | 55 |  |  | 50 |
Pension and postretirement costs | 6 |  |  | 7 |
Lease right-of-use assets | 6 |  |  | 5 |
Other | 1 |  |  | 2 |
Total deferred tax liabilities | 1,121 |  |  | 1,109 |
Net deferred tax liability | $ | 924 |  |  | $ | 912 |
Components of Income Tax Expense (Benefit) | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were:
| 2024 |  | 2023 |  | 2022
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal | $ | 87 |  |  | $ | 73 |  |  | $ | 63 |
Current - State | 17 |  |  | 13 |  |  | 11 |
Total Current Expense (Benefit) | 104 |  |  | 86 |  |  | 74 |
Deferred - Federal | (15) |  |  | (11) |  |  | (3) |
Deferred - State | 2 |  |  | 4 |  |  | 7 |
Total Deferred Expense (Benefit) | (13) |  |  | (7) |  |  | 4 |
Amortization of investment tax credit - Federal | (2) |  |  | (2) |  |  | (2) |
Total income tax expense (benefit) | $ | 89 |  |  | $ | 77 |  |  | $ | 76 |
Total income tax expense (benefit) - Federal | $ | 70 |  |  | $ | 60 |  |  | $ | 58 |
Total income tax expense (benefit) - State | 19 |  |  | 17 |  |  | 18 |
Total income tax expense (benefit) | $ | 89 |  |  | $ | 77 |  |  | $ | 76 |
Reconciliation of Income Tax Expense Derived From Statutory Tax Rate | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were:
| 2024 |  | 2023 |  | 2022
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 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 decrease | (4) |  | (5) |  | (8)
Total income tax expense (benefit) | $ | 89 |  | $ | 77 |  | $ | 76
Effective income tax rate | 20.0% |  | 19.8% |  | 19.1%
Details of Taxes Other Than Income | Details of the components of income tax expense, a reconciliation of federal income taxes derived from statutory tax rates applied to "Income Before Income Taxes" to income taxes for reporting purposes, and details of "Taxes, other than income" were:
| 2024 |  | 2023 |  | 2022
Taxes, other than income |  |  |  |  |
Property and other | $ | 49 |  |  | $ | 45 |  |  | $ | 45 |
Total | $ | 49 |  |  | $ | 45 |  |  | $ | 45 |

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