XML 60 R49.htm IDEA: XBRL DOCUMENT v3.21.2
Long-term Employee Benefits - Schedule of Net Benefit Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Retirement Benefits [Abstract]        
Service cost $ 2.0 $ 1.9 $ 3.8 $ 3.7
Interest cost 1.9 2.3 3.9 4.6
Expected return on plan assets (3.5) (3.1) (6.9) (6.3)
Amortization of actuarial loss, net 1.3 0.8 2.5 1.8
Plan curtailments 0.0 (0.6) 0.0 (1.8)
Net periodic benefit cost $ 1.7 $ 1.3 $ 3.3 $ 2.0