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Accumulated Other Comprehensive Loss (Notes) | 12 Months Ended
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Dec. 31, 2022
Accumulated Other Comprehensive Loss [Abstract] |
Accumulated Other Comprehensive Loss [Text Block] | ACCUMULATED OTHER COMPREHENSIVE LOSS The following table summarizes the changes within each component of accumulated other comprehensive loss.
| Postretirement Benefit Plans |  | Cumulative Translation Adjustment |  |  |  | Accumulated Other Comprehensive Loss
As of December 31, 2019 | $ | (133.3) |  |  | $ | (252.0) |  |  |  |  | $ | (385.3) |
Net change in postretirement benefit plans, net of tax | 77.4 |  |  | — |  |  |  |  | 77.4 |
Net foreign currency translation adjustment | — |  |  | 28.5 |  |  |  |  | 28.5 |
As of December 31, 2020 | (55.9) |  |  | (223.5) |  |  |  |  | (279.4) |
Net change in postretirement benefit plans, net of tax | 15.1 |  |  | — |  |  |  |  | 15.1 |
Net foreign currency translation adjustment | — |  |  | (57.0) |  |  |  |  | (57.0) |
As of December 31, 2021 | (40.8) |  |  | (280.5) |  |  |  |  | (321.3) |
Net change in postretirement benefit plans, net of tax | 44.4 |  |  | — |  |  |  |  | 44.4 |
Net foreign currency translation adjustment | — |  |  | (67.4) |  |  |  |  | (67.4) |
As of December 31, 2022 | $ | 3.6 |  |  | $ | (347.9) |  |  |  |  | $ | (344.3) |

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- Definition Accumulated Other Comprehensive Loss [Abstract] + References No definition available. + Details
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- Definition Accumulated Other Comprehensive Loss [Text Block] + References No definition available. + Details
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