Consolidated and Combined Statements of Comprehensive Income - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Statement Of Income And Comprehensive Income [Abstract] | |||
| Net earnings | $ 59.1 | $ 104.3 | $ 57.4 |
| Other comprehensive (loss) income, net of tax: | |||
| Translation adjustments | (0.1) | (7.5) | (2.9) |
| Adjustment for net periodic pension plan cost | 7.1 | 27.5 | (169.9) |
| Other comprehensive income (loss), net of tax | 7.0 | 20.0 | (172.8) |
| Comprehensive income (loss) | $ 66.1 | $ 124.3 | $ (115.4) |