Restructuring and Other Related Charges - Restructuring and Related Activities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 7.0	$ 18.6	$ 20.2
Impairment charges	1.1	2.3	4.8
Employee severance related
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5.0	13.8	12.8
Facility exit and other related
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.9	$ 2.5	$ 2.6