Restructuring - Costs Included in Selling, General & Administrative expenses on Consolidated Statements of Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 6.0	$ 56.3	$ 7.4
Transformation costs	44.7	27.2	11.7
Total restructuring and transformation costs	50.7	83.5	19.1
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	6.9	3.4	0.0
Other Transformation
Restructuring Cost and Reserve [Line Items]
Transformation costs	37.8	23.8	11.7
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	8.2	17.7	7.0
Transformation Program
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(6.0)	13.0	0.4
Asset Impairment and Write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 3.8	$ 25.6	$ 0.0