Restructuring and Transformation Programs - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1.0	$ 4.2	$ 2.9	$ 5.3
Transformation costs	5.2	1.9	10.7	1.9
Total restructuring and transformation costs	6.2	6.1	13.6	7.2
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	0.8	4.2	2.7	5.1
Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0.2	$ 0.0	$ 0.2	$ 0.2