Restructuring and Transformation Program - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 28.3	$ 2.7	$ 38.6	$ 6.6
Transformation costs	15.4	13.9	44.2	28.4
Total restructuring and transformation costs	43.7	16.6	82.8	35.0
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	0.0	2.9	0.7	5.1
Other Transformation
Restructuring Cost and Reserve [Line Items]
Transformation costs	15.4	11.0	43.5	23.3
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	17.4	1.1	26.8	4.5
Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 10.9	$ 1.6	$ 11.8	$ 2.1