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Employee Benefit Plans (Amounts Recognized in AOCI and Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Changes recognized in other comprehensive income (loss): |  |  |
Total recognized in other comprehensive income | $ (9.3) | $ (7.3) | $ (6.3)
Pension Benefits [Member] |  |  |
Amounts recognized in other comprehensive income (loss): |  |  |
Prior service costs | (0.9) | (0.8) |
Actuarial loss | (199.4) | (194.6) |
Subtotal | (200.3) | (195.4) |
Deferred taxes | 49.5 | 71.2 |
Net amount recognized | (150.8) | (124.2) |
Changes recognized in other comprehensive income (loss): |  |  |
Current year prior service costs | 0.3 | 0.1 |
Current year actuarial loss | 15.7 | 3.7 |
Effect of exchange rates | (1.1) | 1.7 |
Amortization of prior service (costs) credits | (0.1) | (0.2) |
Amortization of actuarial loss | (9.9) | (8.8) |
Total recognized in other comprehensive income | 4.9 | (3.5) |
Total recognized in net periodic benefit cost and other comprehensive income (loss) | 13.7 | $ 1.8 |
Estimated prior service (cost) credits | (0.1) |  |
Estimated actuarial gains (losses) | $ (7.9) |  |

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