Restructuring Charges - Activity and Reserve Balance for Restructuring Charges by Segment (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 21.0	$ 22.5
Restructuring charges (releases)	2.2	16.4
Currency translation	(0.2)	(0.3)
Cash payments	(3.2)	(17.6)
Restructuring reserve, ending balance	19.8	21.0
Corporate
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.3	0.4
Restructuring charges (releases)	(0.2)	0.6
Currency translation	0.0	0.0
Cash payments	0.0	(0.7)
Restructuring reserve, ending balance	0.1	0.3
Americas
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	3.3	2.8
Restructuring charges (releases)	0.4	4.6
Currency translation	0.0	(0.1)
Cash payments	(1.1)	(4.0)
Restructuring reserve, ending balance	2.6	3.3
International
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	17.4	19.3
Restructuring charges (releases)	2.0	11.2
Currency translation	(0.2)	(0.2)
Cash payments	(2.1)	(12.9)
Restructuring reserve, ending balance	$ 17.1	$ 17.4