Restructuring Charges - Roll Forward (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 15.0	$ 21.0	$ 22.5
Restructuring charges	9.9	8.0	16.4
Currency translation and other adjustments	0.0	(1.2)	(0.3)
Cash payments / utilization	(15.1)	(12.8)	(17.6)
Restructuring reserve, ending balance	9.8	15.0	21.0
Corporate
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.5	0.3	0.4
Restructuring charges	2.1	0.6	0.6
Currency translation and other adjustments	0.0	0.0	0.0
Cash payments / utilization	(2.6)	(0.4)	(0.7)
Restructuring reserve, ending balance	0.0	0.5	0.3
Americas
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1.7	3.3	2.8
Restructuring charges	3.1	2.3	4.6
Currency translation and other adjustments	(0.1)	0.1	(0.1)
Cash payments / utilization	(3.9)	(4.0)	(4.0)
Restructuring reserve, ending balance	0.8	1.7	3.3
International
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	12.8	17.4	19.3
Restructuring charges	4.7	5.1	11.2
Currency translation and other adjustments	0.1	(1.3)	(0.2)
Cash payments / utilization	(8.6)	(8.4)	(12.9)
Restructuring reserve, ending balance	$ 9.0	$ 12.8	$ 17.4