Pension and Post-Employment Benefits - Plan Net Pension Credit (Detail) - GERMANY - German Plan [Member] - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Defined Benefit Plan Disclosure [Line Items]
Service credit/(cost)	$ 0.0	$ (1.2)	$ 0.0	$ (2.4)
Interest cost on projected benefit obligation	(0.1)	0.0	(0.2)	(0.1)
Net periodic benefit/(cost)	$ (0.1)	$ (1.2)	$ (0.2)	$ (2.5)

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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+ Details