Long-term Employee Benefits - Schedule of Net Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Retirement Benefits [Abstract]
Service cost	$ 1.6	$ 2.0	$ 3.3	$ 3.8
Interest cost	2.5	1.9	4.9	3.9
Expected return on plan assets	(3.1)	(3.5)	(6.3)	(6.9)
Amortization of actuarial losses, net	0.8	1.3	1.7	2.5
Amortization of prior service cost, net	(0.1)	0.0	(0.1)	0.0
Net periodic benefit cost	$ 1.7	$ 1.7	$ 3.5	$ 3.3