Restructuring and Transformation Program - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 13.7	$ 9.7
Transformation costs	11.5	14.3
Total restructuring and transformation costs	25.2	24.0
Asset impairment and write-offs
Restructuring Cost and Reserve [Line Items]
Transformation costs	0.0	5.2
Other transformation costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	11.5	9.1
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	13.2	8.3
Other restructuring costs and related adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0.5	$ 1.4