Restructuring and Other Charges - Roll Forward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 6.2	$ 4.5	$ 4.1
Restructuring charges	27.4	13.8	13.2
Currency translation and other adjustments	0.0	(0.7)	(0.6)
Cash payments	(11.1)	(11.4)	(12.2)
Restructuring reserve, ending balance	22.5	6.2	4.5
Americas
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.3	0.5	0.5
Restructuring charges	4.7	0.5	2.3
Currency translation and other adjustments	(0.1)	(0.1)	(0.3)
Cash payments	(2.1)	(0.6)	(2.0)
Restructuring reserve, ending balance	2.8	0.3	0.5
International
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	5.9	4.0	3.6
Restructuring charges	21.9	12.7	5.6
Currency translation and other adjustments	0.1	(0.6)	(0.3)
Cash payments	(8.6)	(10.2)	(4.9)
Restructuring reserve, ending balance	19.3	5.9	4.0
Corporate
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.0	0.0	0.0
Restructuring charges	0.8	0.6	5.3
Currency translation and other adjustments	0.0	0.0	0.0
Cash payments	(0.4)	(0.6)	(5.3)
Restructuring reserve, ending balance	$ 0.4	$ 0.0	$ 0.0