Long-term Employee Benefits - Schedule of Defined Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amounts recognized in the consolidated balance sheets consist of:
Accrued pensions	$ (269.3)	$ (309.9)
Pension Plan
Change in benefit obligation:
Projected benefit obligation at beginning of year	704.0	640.7
Service cost	7.6	7.6	$ 7.2
Interest cost	7.7	9.7	13.1
Participant contributions	1.1	1.3
Actuarial (gain) loss, net	(27.5)	41.9
Plan curtailments, settlements and special termination benefits	(11.0)	(15.4)
Benefits paid	(23.9)	(22.8)
Business combinations and other adjustments	(0.2)	1.5
Foreign currency translation	(30.7)	39.5
Projected benefit obligation at end of year	627.1	704.0	640.7
Change in plan assets:
Fair value of plan assets at beginning of year	386.7	356.9
Actual return on plan assets	17.7	26.8
Employer contributions	18.4	24.1
Participant contributions	1.1	1.3
Benefits paid	(23.9)	(22.8)
Settlements	(11.3)	(16.7)
Business combinations and other adjustments	(0.1)	0.6
Foreign currency translation	(7.7)	16.5
Fair value of plan assets at end of year	380.9	386.7	$ 356.9
Funded status, net	(246.2)	(317.3)
Amounts recognized in the consolidated balance sheets consist of:
Other assets	34.9	5.5
Other accrued liabilities	(11.8)	(12.9)
Accrued pensions	(269.3)	(309.9)
Net amount recognized	$ (246.2)	$ (317.3)