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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) | The changes in accumulated other comprehensive loss by component for each of the fiscal years in the two-year period ended December 31, 2023 were as follows:
(Dollars and accompanying footnotes in millions) | Foreign Currency Translation Adjustments |  | Pension and Other Postretirement Benefits(1) |  | Total
Balance as of December 31, 2021 | $ | (35.6) |  |  | $ | (9.6) |  |  | $ | (45.2) |
Other comprehensive income (loss) before reclassifications | (40.0) |  |  | (0.2) |  |  | (40.2) |
Amounts reclassified to earnings | — |  |  | 0.2 |  |  | 0.2 |
Net other comprehensive income (loss) for period | (40.0) |  |  | — |  |  | (40.0) |
Balance as of December 31, 2022 | (75.6) |  |  | (9.6) |  |  | (85.2) |
Other comprehensive income (loss) before reclassifications | 18.8 |  |  | (0.4) |  |  | 18.4 |
Amounts reclassified to earnings | — |  |  | 0.4 |  |  | 0.4 |
Net other comprehensive income (loss) for period | 18.8 |  |  | — |  |  | 18.8 |
Balance as of December 31, 2023 | $ | (56.8) |  |  | $ | (9.6) |  |  | $ | (66.4) |
(1) Net of taxes of $1.8 million, $1.9 million and $2.1 million for the years ended December 31, 2023, 2022 and 2021, respectively.
Schedule of Reclassification of Accumulated Other Comprehensive Income (Loss) | The impacts to the consolidated statements of operations related to items reclassified to earnings were as follows:
|  | Years Ended December 31,
(Dollars in millions) | Financial Statement Line Item | 2023 |  | 2022
Amortization/settlement of pension and other postretirement benefits |  |  |  |
| Pension settlement charges(1) | (0.1) |  |  | — |
| Other income (expense), net(1) | (0.4) |  |  | (0.4) |
| Income tax (expense) benefit | 0.1 |  |  | 0.2 |
| Net income | $ | (0.4) |  |  | $ | (0.2) |
(1) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. For additional details, refer to “Note 8 – Pension Benefits, Other Postretirement Benefits and Employee Savings and Investment Plan.”

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