Restructuring and Transformation Programs - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1.9	$ 1.1
Transformation costs	5.5	0.0
Total restructuring and transformation costs	7.4	1.1
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1.9	0.9
Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0.0	$ 0.2