Restructuring - Schedule of Restructuring Reserve by Type of Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Reserve [Roll Forward]
December 31, 2019	$ 5.7
Charged to Earnings	3.0	$ 3.0
Release of Liability	(1.0)
Payments Made	(3.6)
March 31, 2020	4.1
Severance and related expense
Restructuring Reserve [Roll Forward]
Release of Liability	(1.0)
Restructuring Plan, 2018 | Severance and related expense
Restructuring Reserve [Roll Forward]
December 31, 2019	4.2
Charged to Earnings	2.2	2.2
Release of Liability	(0.6)
Payments Made	(2.5)
March 31, 2020	3.3
Restructuring Plan, 2018 | Other
Restructuring Reserve [Roll Forward]
December 31, 2019	1.5
Charged to Earnings	0.1	0.1
Release of Liability	(0.4)
Payments Made	(1.1)
March 31, 2020	0.1
Restructuring Plan, Other | Other
Restructuring Reserve [Roll Forward]
December 31, 2019	0.0
Charged to Earnings	0.7	$ 0.7
Release of Liability	0.0
Payments Made	0.0
March 31, 2020	$ 0.7