Restructuring and Transformation Program - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 9.7	$ 5.0
Transformation costs	14.3	17.0
Total restructuring and transformation costs	24.0	22.0
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	0.0	0.4
Asset impairment and write-offs
Restructuring Cost and Reserve [Line Items]
Transformation costs	5.2	0.0
Other transformation costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	9.1	16.6
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	8.3	4.0
Other restructuring costs and related adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1.4	$ 1.0