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Long-term Employee Benefits (Tables)
 6 Months Ended
Jun. 30, 2020
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The following table sets forth the components of net periodic benefit cost for the three and six months ended June 30, 2020 and 2019:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2020
 
2019
 
2020
 
2019
Components of net periodic benefit cost:
 
 
 
 
 
 
 
 
Net periodic benefit cost:
 
 
 
 
 
 
 
 
Service cost
 
$
1.9

 
$
1.7

 
$
3.7

 
$
3.6

Interest cost
 
2.3

 
3.4

 
4.6

 
6.6

Expected return on plan assets
 
(3.1
)
 
(3.5
)
 
(6.3
)
 
(7.0
)
Amortization of actuarial loss, net
 
0.8

 
0.4

 
1.8

 
0.9

Plan curtailments
 
(0.6
)
 
—

 
(1.8
)
 
—

Net periodic benefit cost
 
$
1.3

 
$
2.0

 
$
2.0

 
$
4.1