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Pension and Post-Employment Benefits - Plan Net Pension Credit (Detail) - GERMANY - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | $ (0.6) | $ (0.5) | $ (1.8) | $ (1.4)
Interest cost on projected benefit obligation | (2.4) | (1.9) | (7.8) | (5.7)
Expected return on plan assets | 3.8 | 3.9 | 12.3 | 11.7
Amortization of prior service cost | (0.1) | (0.1) | (0.4) | (0.2)
Amortization of actuarial net losses | (0.1) | (0.6) | (0.4) | (1.9)
Net periodic benefit | $ 0.6 | $ 0.8 | $ 1.9 | $ 2.5

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