Long-term Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The following table sets forth the components of net periodic benefit costs for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Components of net periodic benefit cost:
Net periodic benefit cost:
Service cost	$	2.0	$	1.8	$	5.8	$	5.5
Interest cost	1.9		2.6		5.8		7.2
Expected return on plan assets	(3.4)		(3.2)		(10.3)		(9.5)
Amortization of actuarial loss, net	1.3		0.7		3.8		2.5
Amortization of prior service cost, net	(0.1)		—		(0.1)		—
Plan curtailments	—		(0.7)		—		(2.5)
Net periodic benefit cost	$	1.7	$	1.2	$	5.0	$	3.2