Pension and Post-Employment Benefits - Plan Net Pension Credit (Detail) - GERMANY - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ (0.9)	$ (0.6)	$ (1.8)	$ (1.2)
Interest cost on projected benefit obligation	(5.0)	(2.6)	(9.9)	(5.4)
Expected return on plan assets	6.3	4.2	12.5	8.5
Amortization of prior service cost	(0.1)	(0.2)	(0.2)	(0.3)
Amortization of actuarial net gains/(losses)	0.5	(0.2)	1.0	(0.3)
Net periodic benefit	$ 0.8	$ 0.6	$ 1.6	$ 1.3