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Pensions and Other Postretirement Benefits Changes in Plan Assets and Benefit Obligations (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Total recognized in other comprehensive (income) loss, after taxes | $ (20.7) | $ (52.2) | $ (12.3)
Pension Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Current year net actuarial loss (gain) | (8.7) | (2.6) |
Current year prior service cost (credit) | 0.0 | 0.0 |
Amortization of net actuarial (loss) gain | (16.0) | (16.4) |
Amortization of prior service (cost) credit | (0.4) | (0.5) |
Recognition of prior service cost due to curtailment | (0.3) | 0.0 |
Transfer of actuarial (loss) gain from continuing to discontinued operations | 0.0 | 0.0 |
Curtailment loss | (0.9) | (5.0) |
Settlement loss | (1.8) | (47.3) |
Foreign currency exchange rate changes on the above line items | (0.4) | 0.4 |
Total recognized in other comprehensive (income) loss, before taxes | (28.5) | (71.4) |
Total recognized in other comprehensive (income) loss, after taxes | (22.3) | (52.2) |
Other Benefits |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Current year net actuarial loss (gain) | 0.8 | 2.1 |
Current year prior service cost (credit) | (0.1) | (0.1) |
Amortization of net actuarial (loss) gain | 0.5 | 1.0 |
Amortization of prior service (cost) credit | 0.1 | 0.1 |
Recognition of prior service cost due to curtailment | 0.0 | (0.3) |
Transfer of actuarial (loss) gain from continuing to discontinued operations | (0.1) | 0.6 |
Curtailment loss | 0.0 | 0.0 |
Settlement loss | 0.0 | 0.0 |
Foreign currency exchange rate changes on the above line items | 0.0 | 0.0 |
Total recognized in other comprehensive (income) loss, before taxes | 1.2 | 3.4 |
Total recognized in other comprehensive (income) loss, after taxes | $ 0.9 | $ 2.1 |

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