Restructuring and Transformation Program - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 5.3	$ 0.8	$ 10.3	$ 3.9
Transformation costs	11.8	6.0	28.8	14.5
Total restructuring and transformation costs	17.1	6.8	39.1	18.4
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	0.3	0.3	0.7	2.2
Other Transformation
Restructuring Cost and Reserve [Line Items]
Transformation costs	11.5	5.7	28.1	12.3
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	5.4	0.9	9.4	3.4
Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ (0.1)	$ (0.1)	$ 0.9	$ 0.5