Long-term Employee Benefits - Schedule of Net Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Retirement Benefits [Abstract]
Service cost	$ 1.7	$ 1.8
Interest cost	2.4	2.0
Expected return on plan assets	(3.2)	(3.4)
Amortization of actuarial losses, net	0.9	1.2
Net periodic benefit cost	$ 1.8	$ 1.6