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Income and Other Taxes (Tables) | 12 Months Ended
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Dec. 31, 2022
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:
| 2022 |  | 2021
Deferred Tax Assets |  |  |
Deferred investment tax credits | $ | 29 |  |  | $ | 30 |
Regulatory liabilities | 88 |  |  | 94 |
Income taxes due to customers | 448 |  |  | 422 |
Accrued pension and postretirement costs | 86 |  |  | 75 |
State loss carryforwards | 230 |  |  | 483 |
Federal and state tax credit carryforwards | 68 |  |  | 15 |
Internal Revenue Code Section 197 intangibles (a) | 85 |  |  | — |
Leases | 15 |  |  | 67 |
Contributions in aid of construction | 114 |  |  | 120 |
Other | 72 |  |  | 84 |
Valuation allowances | (213) |  |  | (462) |
Total deferred tax assets | 1,022 |  |  | 928 |
Deferred Tax Liabilities |  |  |
Plant - net | 3,609 |  |  | 3,812 |
Regulatory assets | 337 |  |  | 180 |
Prepayments | 46 |  |  | — |
Other | 30 |  |  | 75 |
Total deferred tax liabilities | 4,022 |  |  | 4,067 |
Net deferred tax liability | $ | 3,000 |  |  | $ | 3,139 |
(a)Certain of the RIE assets acquired in 2022 are treated as intangibles for tax purposes that are amortized over a 15 year period. PPL recorded deferred tax assets on these intangibles, which will reverse as tax deductions are taken.
Summary of Operating Loss Carryforwards and Tax Credit Carryforwards | At December 31, 2022, 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 | $ | 5,830 |  |  | $ | 230 |  |  | $ | (213) |  |  | 2023-2042
| Gross |  | Deferred Tax Asset |  | Valuation Allowance |  | Expiration
Credit carryforwards |  |  |  |  |  |  |
Federal investment tax credit |  |  | 20 |  |  | — |  |  | 2042
Federal foreign tax credits |  |  | 32 |  |  | — |  |  | 2027
Federal - other |  |  | 3 |  |  | — |  |  | 2042
State recycling credit |  |  | 12 |  |  | — |  |  | 2028
State - other |  |  | 1 |  |  | — |  |  | 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
2022 | $ | 462 |  |  | $ | 10 |  |  | $ | — |  |  | $ | 259 |  | (a) | $ | 213 |
2021 | 536 |  |  | 48 |  | (b) | — |  |  | 122 |  | (c) | 462 |
2020 | 514 |  |  | 26 |  |  | — |  |  | 4 |  |  | 536 |
(a)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. (b)In 2021, PPL recorded a $31 million increase in a valuation allowance on a state net operating loss carryforward in connection with the loss on extinguishment associated with a tender offer to purchase and retire PPL Capital Funding's outstanding Senior Notes. (c)In light of the disposition of PPL's U.K. utility business, there was a decrease in the valuation allowance of approximately $113 million.
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:
| 2022 |  | 2021 |  | 2020
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal | $ | (2) |  |  | $ | (1) |  |  | $ | (8) |
Current - State | 24 |  |  | 36 |  |  | 24 |
Current - Foreign | — |  |  | (1) |  |  | (2) |
Total Current Expense (Benefit) | 22 |  |  | 34 |  |  | 14 |
Deferred - Federal | 122 |  |  | 28 |  |  | 135 |
Deferred - State | 68 |  |  | 105 |  |  | 94 |
Deferred - Foreign (a) | — |  |  | 383 |  |  | 101 |
Total Deferred Expense (Benefit), excluding operating loss carryforwards | 190 |  |  | 516 |  |  | 330 |
Amortization of investment tax credit | (3) |  |  | (3) |  |  | (3) |
Tax expense (benefit) of operating loss carryforwards |  |  |  |  |
Deferred - Federal | 2 |  |  | 12 |  |  | 6 |
Deferred - State | (10) |  |  | (56) |  |  | (33) |
Total Tax Expense (Benefit) of Operating Loss Carryforwards | (8) |  |  | (44) |  |  | (27) |
Total income tax expense (benefit) | $ | 201 |  |  | $ | 503 |  |  | $ | 314 |
Total income tax expense (benefit) - Federal | $ | 119 |  |  | $ | 36 |  |  | $ | 130 |
Total income tax expense (benefit) - State | 82 |  |  | 85 |  |  | 85 |
Total income tax expense (benefit) - Foreign | — |  |  | 382 |  |  | 99 |
Total income tax expense (benefit) | $ | 201 |  |  | $ | 503 |  |  | $ | 314 |
(a)The U.K. Finance Act 2021, formally enacted on June 10, 2021, increased the U.K. corporation tax rate from 19% to 25%, effective April 1, 2023. The primary impact of the corporation tax rate increase was an increase in deferred tax liabilities of the U.K. utility business, which was sold on June 14, 2021, and a corresponding deferred tax expense of $383 million, which was recognized in continuing operations in 2021. In 2020, the U.K. Finance Act 2020 cancelled the tax rate reduction from 19% to 17%. The primary impact of the cancellation of the corporation tax rate reduction was an increase in deferred tax liabilities and a corresponding deferred tax expense of $106 million. In the table above, the following income tax expense (benefit) are excluded from income taxes:
| 2022 |  | 2021 |  | 2020
Discontinued operations | $ | (42) |  |  | $ | 759 |  |  | $ | 188 |
Reclassification from AOCI due to sale of UK utility business | — |  |  | 660 |  |  | — |
Other comprehensive income | 11 |  |  | 150 |  |  | (19) |
Total | $ | (31) |  |  | $ | 1,569 |  |  | $ | 169 |
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:
| 2022 |  | 2021 |  | 2020
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 192 |  | $ | 109 |  | $ | 200
State income taxes, net of federal income tax benefit | 68 |  | 23 |  | 48
Valuation allowance adjustments (a) | 9 |  | 48 |  | 24
Federal and state income tax return adjustments | (1) |  | (3) |  | (9)
Impact of the U.K. Finance Acts on deferred tax balances (b) | — |  | 383 |  | 101
Depreciation and other items not normalized | (8) |  | (5) |  | (5)
Amortization of excess deferred federal and state income taxes | (54) |  | (54) |  | (43)
Non-deductible officer's salary | 5 |  | 6 |  | 7
Other | (10) |  | (4) |  | (9)
Total increase (decrease) | 9 |  | 394 |  | 114
Total income tax expense (benefit) | $ | 201 |  | $ | 503 |  | $ | 314
Effective income tax rate | 22.0% |  | 96.5% |  | 32.9%
(a)In 2021, PPL recorded a $31 million state deferred tax benefit on a net operating loss and an offsetting valuation allowance in connection with the loss on extinguishment associated with a tender offer to purchase and retire PPL Capital Funding's outstanding Senior Notes. In 2022, 2021, and 2020, PPL recorded deferred income tax expense of $5 million, $15 million and $24 million for valuation allowances primarily related to increased Pennsylvania net operating loss carryforwards expected to be unutilized. (b)In 2020, the U.K. Finance Act 2020 cancelled the tax rate reduction to 17%, thereby maintaining the corporation tax rate at 19% for financial years 2020 and 2021. The primary impact of the cancellation of the corporation tax rate reduction was an increase in deferred tax liabilities and a corresponding deferred tax expense of $106 million. The U.K. Finance Act 2021, formally enacted on June 10, 2021, increased the U.K. corporation tax rate from 19% to 25%, effective April 1, 2023. The primary impact of the corporation tax rate increase was an increase in deferred tax liabilities of the U.K. utility business, which was sold on June 14, 2021, and a corresponding deferred tax expense of $383 million, which was recognized in continuing operations in 2021.
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:
| 2022 |  | 2021 |  | 2020
Taxes, other than income |  |  |  |  |
State gross receipts (a) | $ | 175 |  |  | $ | 113 |  |  | $ | 100 |
Domestic - other (a) | 157 |  |  | 94 |  |  | 80 |
Total | $ | 332 |  |  | $ | 207 |  |  | $ | 180 |
(a)Increase primarily due to the acquisition of RIE.
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:
| 2022 |  | 2021
Deferred Tax Assets |  |  |
Accrued pension and postretirement costs | $ | 27 |  |  | $ | 14 |
Contributions in aid of construction | 87 |  |  | 95 |
Regulatory liabilities | 36 |  |  | 52 |
Income taxes due to customers | 193 |  |  | 154 |
Other | 18 |  |  | 21 |
Total deferred tax assets | 361 |  |  | 336 |
Deferred Tax Liabilities |  |  |
Electric utility plant - net | 1,745 |  |  | 1,891 |
Regulatory assets | 93 |  |  | 74 |
Prepayments | 35 |  |  | — |
Other | 2 |  |  | 39 |
Total deferred tax liabilities | 1,875 |  |  | 2,004 |
Net deferred tax liability | $ | 1,514 |  |  | $ | 1,668 |
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:
| 2022 |  | 2021 |  | 2020
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal | $ | 63 |  |  | $ | 40 |  |  | $ | 61 |
Current - State | 20 |  |  | 35 |  |  | 23 |
Total Current Expense (Benefit) | 83 |  |  | 75 |  |  | 84 |
Deferred - Federal | 60 |  |  | 59 |  |  | 45 |
Deferred - State | 31 |  |  | 20 |  |  | 38 |
Total Deferred Expense (Benefit), excluding operating loss carryforwards | 91 |  |  | 79 |  |  | 83 |
Total income tax expense (benefit) | $ | 174 |  |  | $ | 154 |  |  | $ | 167 |
Total income tax expense (benefit) - Federal | $ | 123 |  |  | $ | 99 |  |  | $ | 106 |
Total income tax expense (benefit) - State | 51 |  |  | 55 |  |  | 61 |
Total income tax expense (benefit) | $ | 174 |  |  | $ | 154 |  |  | $ | 167 |
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:
| 2022 |  | 2021 |  | 2020
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 147 |  | $ | 126 |  | $ | 139
Increase (decrease) due to: |  |  |  |  |
State income taxes, net of federal income tax benefit | 54 |  | 46 |  | 52
Federal and state income tax return adjustments | (1) |  | — |  | (4)
Depreciation and other items not normalized | (7) |  | (5) |  | (5)
Amortization of excess deferred federal income taxes (a) | (12) |  | (14) |  | (16)
State income tax rate change (b) | (9) |  | — |  | —
Other | 2 |  | 1 |  | 1
Total increase (decrease) | 27 |  | 28 |  | 28
Total income tax expense (benefit) | $ | 174 |  | $ | 154 |  | $ | 167
Effective income tax rate | 24.9% |  | 25.7% |  | 25.2%
(a)In 2022, 2021, and 2020, 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. (b)On July 8, 2022, the Governor of Pennsylvania signed into law Pennsylvania House Bill 1342 (H.B. 1342). Among other changes to the state tax code, the bill reduces the corporate net income tax rate from 9.99% to 8.99% beginning January 1, 2023, and further reduces the rate annually by half a percentage point until the rate reaches 4.99% in 2031. The income statement impact of the corporate net income tax reduction was a deferred tax benefit of $9 million.
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:
| 2022 |  | 2021 |  | 2020
Taxes, other than income |  |  |  |  |
State gross receipts | $ | 142 |  |  | $ | 113 |  |  | $ | 100 |
Property and other | 7 |  |  | 7 |  |  | 7 |
Total | $ | 149 |  |  | $ | 120 |  |  | $ | 107 |
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:
| 2022 |  | 2021
Deferred Tax Assets |  |  |
Contributions in aid of construction | $ | 17 |  |  | $ | 15 |
Regulatory liabilities | 18 |  |  | 18 |
Deferred investment tax credits | 8 |  |  | 8 |
Income taxes due to customers | 119 |  |  | 125 |
State tax credit carryforwards | 9 |  |  | 11 |
Lease liabilities | 4 |  |  | 4 |
Valuation allowances | (9) |  |  | (11) |
Other | 8 |  |  | 11 |
Total deferred tax assets | 174 |  |  | 181 |
Deferred Tax Liabilities |  |  |
Plant - net | 869 |  |  | 854 |
Regulatory assets | 69 |  |  | 65 |
Lease right-of-use assets | 3 |  |  | 4 |
Other | 4 |  |  | 9 |
Total deferred tax liabilities | 945 |  |  | 932 |
Net deferred tax liability | $ | 771 |  |  | $ | 751 |
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:
| 2022 |  | 2021 |  | 2020
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal | $ | 60 |  |  | $ | 41 |  |  | $ | 53 |
Current - State | 9 |  |  | 5 |  |  | 7 |
Total Current Expense (Benefit) | 69 |  |  | 46 |  |  | 60 |
Deferred - Federal | (10) |  |  | 1 |  |  | (4) |
Deferred - State | 5 |  |  | 8 |  |  | 7 |
Total Deferred Expense (Benefit) | (5) |  |  | 9 |  |  | 3 |
Amortization of investment tax credit - Federal | (1) |  |  | (1) |  |  | (1) |
Total income tax expense (benefit) | $ | 63 |  |  | $ | 54 |  |  | $ | 62 |
Total income tax expense (benefit) - Federal | $ | 49 |  |  | $ | 41 |  |  | $ | 48 |
Total income tax expense (benefit) - State | 14 |  |  | 13 |  |  | 14 |
Total income tax expense (benefit) | $ | 63 |  |  | $ | 54 |  |  | $ | 62 |
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:
| 2022 |  | 2021 |  | 2020
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 70 |  | $ | 64 |  | $ | 64
Increase (decrease) due to: |  |  |  |  |
State income taxes, net of federal income tax benefit | 13 |  | 12 |  | 12
Amortization of excess deferred federal and state income taxes | (18) |  | (20) |  | (11)
Other | (2) |  | (2) |  | (3)
Total increase (decrease) | (7) |  | (10) |  | (2)
Total income tax expense (benefit) | $ | 63 |  | $ | 54 |  | $ | 62
Effective income tax rate | 18.8% |  | 17.8% |  | 20.3%
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:
| 2022 |  | 2021 |  | 2020
Taxes, other than income |  |  |  |  |
Property and other | $ | 48 |  |  | $ | 46 |  |  | $ | 40 |
Total | $ | 48 |  |  | $ | 46 |  |  | $ | 40 |
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:
| 2022 |  | 2021
Deferred Tax Assets |  |  |
Contributions in aid of construction | $ | 9 |  |  | $ | 9 |
Regulatory liabilities | 23 |  |  | 23 |
Deferred investment tax credits | 21 |  |  | 22 |
Income taxes due to customers | 136 |  |  | 143 |
State tax credit carryforwards | 4 |  |  | 4 |
Lease liabilities | 5 |  |  | 7 |
Valuation allowances | (3) |  |  | (3) |
Other | 4 |  |  | 4 |
Total deferred tax assets | 199 |  |  | 209 |
Deferred Tax Liabilities |  |  |
Plant - net | 1,028 |  |  | 1,012 |
Regulatory assets | 56 |  |  | 41 |
Pension and postretirement costs | 6 |  |  | 13 |
Lease right-of-use assets | 5 |  |  | 6 |
Other | — |  |  | 2 |
Total deferred tax liabilities | 1,095 |  |  | 1,074 |
Net deferred tax liability | $ | 896 |  |  | $ | 865 |
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:
| 2022 |  | 2021 |  | 2020
Income Tax Expense (Benefit) |  |  |  |  |
Current - Federal | $ | 63 |  |  | $ | 58 |  |  | $ | 40 |
Current - State | 11 |  |  | 8 |  |  | 3 |
Total Current Expense (Benefit) | 74 |  |  | 66 |  |  | 43 |
Deferred - Federal | (3) |  |  | (4) |  |  | 11 |
Deferred - State | 7 |  |  | 7 |  |  | 11 |
Total Deferred Expense (Benefit) | 4 |  |  | 3 |  |  | 22 |
Amortization of investment tax credit - Federal | (2) |  |  | (2) |  |  | (2) |
Total income tax expense (benefit) | $ | 76 |  |  | $ | 67 |  |  | $ | 63 |
Total income tax expense (benefit) - Federal | $ | 58 |  |  | $ | 52 |  |  | $ | 49 |
Total income tax expense (benefit) - State | 18 |  |  | 15 |  |  | 14 |
Total income tax expense (benefit) | $ | 76 |  |  | $ | 67 |  |  | $ | 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:
| 2022 |  | 2021 |  | 2020
Reconciliation of Income Tax Expense (Benefit) |  |  |  |  |
Federal income tax on Income Before Income Taxes at statutory tax rate - 21% | $ | 84 |  | $ | 76 |  | $ | 72
Increase (decrease) due to: |  |  |  |  |
State income taxes, net of federal income tax benefit | 16 |  | 14 |  | 14
Amortization of investment tax credit | (2) |  | (2) |  | (2)
Amortization of excess deferred federal and state income taxes | (21) |  | (20) |  | (17)
Other | (1) |  | (1) |  | (4)
Total decrease | (8) |  | (9) |  | (9)
Total income tax expense (benefit) | $ | 76 |  | $ | 67 |  | $ | 63
Effective income tax rate | 19.1% |  | 18.4% |  | 18.4%
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:
| 2022 |  | 2021 |  | 2020
Taxes, other than income |  |  |  |  |
Property and other | $ | 45 |  |  | $ | 41 |  |  | $ | 37 |
Total | $ | 45 |  |  | $ | 41 |  |  | $ | 37 |

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