Property, Plant and Equipment, net (Details) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
Dec. 31, 2017 |
|
| Property, Plant and Equipment | |||
| Cost | $ 592.5 | $ 552.0 | |
| Less accumulated depreciation | (389.1) | (369.0) | |
| Total | 203.4 | 183.0 | |
| Depreciation | 11.9 | $ 11.7 | |
| Land | |||
| Property, Plant and Equipment | |||
| Cost | 7.5 | 7.7 | |
| Buildings and improvements | |||
| Property, Plant and Equipment | |||
| Cost | 105.0 | 103.2 | |
| Machinery, equipment, and other | |||
| Property, Plant and Equipment | |||
| Cost | $ 480.0 | $ 441.1 | |