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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Accumulated Other Comprehensive Income (Loss) | The after-tax changes in AOCI by component for the years ended December 31 were as follows:
|  |  |  |  | Unrealized gains (losses) on qualifying derivatives |  |  |  | Defined benefit plans |  |
|  |  |  |  |  | Equity investees' AOCI |  | Prior service costs |  | Actuarial gain (loss) |  | Total
PPL |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2022 |  |  |  |  | $ | 3 |  |  | $ | 2 |  |  | $ | (5) |  |  | $ | (124) |  |  | $ | (124) |
Amounts arising during the year |  |  |  |  | — |  |  | 1 |  |  | — |  |  | (41) |  |  | (40) |
Reclassifications from AOCI |  |  |  |  | 3 |  |  | — |  |  | 1 |  |  | (3) |  |  | 1 |
Net OCI during the year |  |  |  |  | 3 |  |  | 1 |  |  | 1 |  |  | (44) |  |  | (39) |
December 31, 2023 |  |  |  |  | $ | 6 |  |  | $ | 3 |  |  | $ | (4) |  |  | $ | (168) |  |  | $ | (163) |
Amounts arising during the year |  |  |  |  | — |  |  | 1 |  |  | — |  |  | (22) |  |  | (21) |
Reclassifications from AOCI |  |  |  |  | 3 |  |  | — |  |  | 1 |  |  | (4) |  |  | — |
Net OCI during the year |  |  |  |  | 3 |  |  | 1 |  |  | 1 |  |  | (26) |  |  | (21) |
December 31, 2024 |  |  |  |  | $ | 9 |  |  | $ | 4 |  |  | $ | (3) |  |  | $ | (194) |  |  | $ | (184) |
Amounts arising during the year |  |  |  |  | 1 |  |  | (1) |  |  | — |  |  | (20) |  |  | (20) |
Reclassifications from AOCI |  |  |  |  | 2 |  |  | — |  |  | 1 |  |  | (1) |  |  | 2 |
Net OCI during the year |  |  |  |  | 3 |  |  | (1) |  |  | 1 |  |  | (21) |  |  | (18) |
December 31, 2025 |  |  |  |  | $ | 12 |  |  | $ | 3 |  |  | $ | (2) |  |  | $ | (215) |  |  | $ | (202) |
Reclassification out of Other Comprehensive Income (Loss) | The following table presents PPL's gains (losses) and related income taxes for reclassifications from AOCI for the years ended December 31, 2025, 2024 and 2023. The defined benefit plan components of AOCI are not reflected in their entirety in the statement of income; rather, they are included in the computation of net periodic defined benefit costs (credits) and subject to capitalization. See Note 10 for additional information.
|  | PPL |  |
Details about AOCI |  | 2025 |  | 2024 |  | 2023 |  | Affected Line Item on the Statements of Income
Qualifying derivatives |  |  |  |  |  |  |  |
Interest rate derivatives |  | $ | (3) |  |  | $ | (3) |  |  | $ | (3) |  |  | Interest Expense
Total Pre-tax |  | (3) |  |  | (3) |  |  | (3) |  |  |
Income Taxes |  | 1 |  |  | — |  |  | — |  |  |
Total After-tax |  | (2) |  |  | (3) |  |  | (3) |  |  |
Defined benefit plans |  |  |  |  |  |  |  |
Prior service costs |  | (1) |  |  | (1) |  |  | (2) |  |  |
Net actuarial loss |  | 2 |  |  | 4 |  |  | 3 |  |  |
Total Pre-tax |  | 1 |  |  | 3 |  |  | 1 |  |  |
Income Taxes |  | (1) |  |  | — |  |  | 1 |  |  |
Total After-tax |  | — |  |  | 3 |  |  | 2 |  |  |
Total reclassifications during the year |  | $ | (2) |  |  | $ | — |  |  | $ | (1) |  |  |

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