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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2024
Equity [Abstract] |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | Accumulated other comprehensive loss at the balance sheet dates is comprised of the following:
| Pension Plan Adjustments |  | Other Postretirement Employee Benefit Plan Adjustments |  | Total |
Balance at December 31, 2022 | $ | (46.5) |  |  | $ | 13.3 |  |  | $ | (33.3) |  |
Other comprehensive income (loss) before reclassifications | 4.5 |  |  | (1.7) |  |  | 2.8 |  |
Amounts reclassified from accumulated other comprehensive loss | 0.1 |  |  | (0.3) |  |  | (0.2) |  |
Other comprehensive income (loss), net of tax | 4.6 |  |  | (2.0) |  |  | 2.6 |  |
Balance at December 31, 2023 | (42.0) |  |  | 11.3 |  |  | (30.7) |  |
Other comprehensive income (loss) before reclassifications | (6.0) |  |  | 2.4 |  |  | (3.6) |  |
Amounts reclassified from accumulated other comprehensive loss | 0.1 |  |  | (0.4) |  |  | (0.3) |  |
Other comprehensive income (loss), net of tax | (5.9) |  |  | 2.1 |  |  | (3.8) |  |
Balance at December 31, 2024 | $ | (47.8) |  |  | $ | 13.4 |  |  | $ | (34.5) |  |

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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