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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The after-tax changes in AOCI by component for the periods ended March 31 were as follows.
| Foreign currency translation adjustments |  |  |  | Unrealized gains (losses) on qualifying derivatives |  |  |  | Defined benefit plans |  |
|  |  |  |  | Equity investees' AOCI |  | Prior service costs |  | Actuarial gain (loss) |  | Total
PPL |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2021 | $ | — |  |  |  |  | $ | 1 |  |  | $ | — |  |  | $ | (6) |  |  | $ | (152) |  |  | $ | (157) |
Amounts arising during the period | — |  |  |  |  | — |  |  | 1 |  |  | (1) |  |  | — |  |  | — |
Reclassifications from AOCI | — |  |  |  |  | 1 |  |  | — |  |  | 1 |  |  | 3 |  |  | 5 |
Net OCI during the period | — |  |  |  |  | 1 |  |  | 1 |  |  | — |  |  | 3 |  |  | 5 |
March 31, 2022 | $ | — |  |  |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | (6) |  |  | $ | (149) |  |  | $ | (152) |
December 31, 2020 | $ | (1,158) |  |  |  |  | $ | — |  |  | $ | — |  |  | $ | (16) |  |  | $ | (3,046) |  |  | $ | (4,220) |
Amounts arising during the period | 303 |  |  |  |  | (30) |  |  | — |  |  | — |  |  | — |  |  | 273 |
Reclassifications from AOCI | — |  |  |  |  | 25 |  |  | — |  |  | — |  |  | 40 |  |  | 65 |
Net OCI during the period | 303 |  |  |  |  | (5) |  |  | — |  |  | — |  |  | 40 |  |  | 338 |
March 31, 2021 | $ | (855) |  |  |  |  | $ | (5) |  |  | $ | — |  |  | $ | (16) |  |  | $ | (3,006) |  |  | $ | (3,882) |
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 periods ended March 31.
|  |  |  | Three Months |  | Affected Line Item on the
Details about AOCI |  |  |  |  |  | 2022 |  | 2021 |  | Statements of Income
Qualifying derivatives |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  |  |  |  |  | $ | (1) |  |  | $ | (1) |  |  | Interest Expense
|  |  |  |  |  | — |  |  | (1) |  |  | Loss from Discontinued Operations (net of income taxes)
Cross-currency swaps |  |  |  |  |  | — |  |  | (37) |  |  | Loss from Discontinued Operations (net of income taxes)
Total Pre-tax |  |  |  |  |  | (1) |  |  | (39) |  |  |
Income Taxes |  |  |  |  |  | — |  |  | 14 |  |  |
Total After-tax |  |  |  |  |  | (1) |  |  | (25) |  |  |
Defined benefit plans |  |  |  |  |  |  |  |  |  |
Prior service costs (a) |  |  |  |  |  | (1) |  |  | — |  |  |
Net actuarial loss (a) |  |  |  |  |  | (4) |  |  | (62) |  |  |
Total Pre-tax |  |  |  |  |  | (5) |  |  | (62) |  |  |
Income Taxes |  |  |  |  |  | 1 |  |  | 22 |  |  |
Total After-tax |  |  |  |  |  | (4) |  |  | (40) |  |  |
Total reclassifications during the period |  |  |  |  |  | $ | (5) |  |  | $ | (65) |  |  |
(a) These AOCI components are included in the computation of net periodic defined benefit cost. See Note 9 for additional information.

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