Pension and Post-Employment Benefits - Plan Net Pension Credit (Detail) - GERMANY - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Service credit/(cost)	$ 7.6	$ (0.9)	$ 5.9	$ (2.7)
Interest cost on projected benefit obligation	(4.8)	(5.1)	(14.1)	(15.0)
Expected return on plan assets	6.5	6.5	19.3	19.0
Amortization of prior service cost	(0.1)	(0.2)	(0.4)	(0.4)
Amortization of actuarial net gains	0.1	0.6	0.2	1.6
Net periodic benefit	$ 9.3	$ 0.9	$ 10.9	$ 2.5

Defined benefit plan net periodic other benefit cost.

No definition available.

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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- Definition

Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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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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No definition available.

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- Definition

Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

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- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

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