Consolidated Statements of Comprehensive Income - USD ($) $ in Millions |
12 Months Ended | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|||||||||||||||||
| Comprehensive Income (Loss) [Abstract] | |||||||||||||||||||
| Net Earnings | $ 265.3 | $ 146.4 | [1],[2],[3],[4],[5] | $ 276.0 | |||||||||||||||
| Foreign Currency Translation [Abstract] | |||||||||||||||||||
| Foreign Currency Translation Adjustments | [6] | (17.3) | 20.3 | 4.5 | |||||||||||||||
| Net Foreign Currency Translation | (17.3) | 20.3 | 4.5 | ||||||||||||||||
| Defined Benefit Plans [Abstract] | |||||||||||||||||||
| Net Actuarial Losses | [6] | (3.3) | (8.1) | (10.2) | |||||||||||||||
| Amortization of Prior Service Credits | [7] | (0.5) | (0.5) | (0.4) | |||||||||||||||
| Amortization of Net Actuarial Losses | [7] | 7.9 | 69.3 | 45.3 | |||||||||||||||
| Net Defined Benefit Plans | 4.1 | 60.7 | 34.7 | ||||||||||||||||
| Derivatives [Abstract] | |||||||||||||||||||
| Net Deferred Gains (Losses) on Derivatives | [6] | 7.3 | (7.5) | 2.1 | |||||||||||||||
| Reclassification to Earnings | [7] | 2.6 | 1.3 | (1.8) | |||||||||||||||
| Net Deferred Gains (Losses) on Derivatives | 9.9 | (6.2) | 0.3 | ||||||||||||||||
| Other Comprehensive Income | (3.3) | 74.8 | 39.5 | ||||||||||||||||
| Comprehensive Income | 262.0 | 221.2 | 315.5 | ||||||||||||||||
| Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent [Abstract] | |||||||||||||||||||
| Foreign Currency Translation Adjustments, Tax Effect | 1.5 | (4.1) | (7.9) | ||||||||||||||||
| Net Actuarial Gains (Losses), Tax Effect | 1.2 | 5.4 | 5.4 | ||||||||||||||||
| Gains (Losses) on Derivatives, Tax Effect | $ (3.3) | $ 3.4 | $ (0.8) | ||||||||||||||||
| |||||||||||||||||||