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Pension and Post-Employment Benefits - Plan Net Pension Credit (Detail) - GERMANY - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ (0.6) $ (0.5) $ (1.2) $ (0.9)
Interest cost on projected benefit obligation (2.6) (1.9) (5.4) (3.8)
Expected return on plan assets 4.2 3.9 8.5 7.8
Amortization of prior service cost (0.2) 0.0 (0.3) (0.1)
Amortization of actuarial net losses (0.2) (0.6) (0.3) (1.3)
Net periodic benefit $ 0.6 $ 0.9 $ 1.3 $ 1.7