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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | Accumulated other comprehensive loss, net of tax, is comprised of the following:
| Pension Plan Adjustments | Other Post Retirement Employee Benefit Plan Adjustments | Total
Balance at December 31, 2019 | $ | (67.8) |  | $ | 8.3 |  | $ | (59.5) |
Amounts reclassified from accumulated other comprehensive loss | 3.7 |  | — |  | 3.7 |
Balance at June 30, 2020 | $ | (64.1) |  | $ | 8.3 |  | $ | (55.8) |
Balance at December 31, 2020 | $ | (54.5) |  | $ | 0.2 |  | $ | (54.3) |
Amounts reclassified from accumulated other comprehensive loss | 3.8 |  | — |  | 3.8 |
Balance at June 30, 2021 | $ | (50.8) |  | $ | 0.2 |  | $ | (50.5) |

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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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