Restructuring Costs - Summary of Company's Net Pretax Restructuring Costs (Credits), Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	$ 2.1	$ 1.6	$ 17.2	$ 13.1
Aurora [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	2.1	0.5	14.1	9.4
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	$ 0.0	$ 1.1	$ 3.1	$ 3.7

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- 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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