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Long-term Employee Benefits
 9 Months Ended
Sep. 30, 2019
Retirement Benefits [Abstract]  
Long-term Employee Benefits LONG-TERM EMPLOYEE BENEFITS
Components of Net Periodic Benefit Cost
The following table sets forth the components of net periodic benefit cost for the three and nine months ended September 30, 2019 and 2018:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2019
 
2018
 
2019
 
2018
Components of net periodic benefit cost:
 
 
 
 
 
 
 
 
Net periodic benefit cost:
 
 
 
 
 
 
 
 
Service cost
 
$
1.8

 
$
2.2

 
$
5.4

 
$
6.7

Interest cost
 
3.2

 
3.2

 
9.8

 
10.0

Expected return on plan assets
 
(3.4
)
 
(3.9
)
 
(10.4
)
 
(12.2
)
Amortization of actuarial loss, net
 
0.5

 
0.3

 
1.4

 
0.9

Amortization of prior service cost, net
 
—

 
—

 
—

 
(0.1
)
Net periodic benefit cost
 
$
2.1

 
$
1.8

 
$
6.2

 
$
5.3


All non-service components of net periodic benefit cost are recorded in other (income) expense, net within the accompanying condensed consolidated statements of operations.