Restructuring and Other Related Charges Restructuring and Related Activities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Restructuring Cost and Reserve [Line Items] | |||
| Restructuring charges | $ 19.0 | $ 22.1 | $ 24.3 |
| Impairment charges | 2.3 | 4.8 | 12.0 |
| Employee severance related | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Restructuring charges | 14.2 | 14.7 | 11.8 |
| Facility exit and other related | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Restructuring charges | $ 2.5 | $ 2.6 | $ 0.5 |