Restructuring - Costs Included in Selling, General & Administrative expenses on Consolidated Statements of Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 7.5	$ 7.0	$ 3.9
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	4.8	4.9	3.3
Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 2.7	$ 2.1	$ 0.6