Restructuring Activities - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 0.0	$ 0.8	$ 0.0	$ 4.8
Technology Realignment Program [Member]
Restructuring Cost and Reserve [Line Items]
Expected Pre-tax charges	$ 15.0			13.4
Restructuring costs		0.8	$ 0.6	4.3	$ 4.2
Optimization Program [Member]
Restructuring Cost and Reserve [Line Items]
Expected Pre-tax charges		5.6		6.9
Restructuring costs		$ 5.6		6.9
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Expected Pre-tax charges				$ 76.1

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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