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Pensions and Postretirement Benefits (Tables)
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Schedule of Net Periodic Benefit Cost
The components of net periodic benefit cost for our U.S. and foreign defined benefit pension and other postretirement plans for the three months ended March 31, 2020 and 2019, are as follows:
 
Pension Benefits
 
Other Benefits
 
2020
 
2019
 
2020
 
2019
 
(in millions)
Service cost
$
1.0

 
$
1.1

 
$
—

 
$
0.1

Interest cost
2.8

 
3.0

 
—

 
—

Expected return on plan assets
(4.7
)
 
(4.0
)
 
—

 
—

Amortization of net loss (gain)
1.3

 
1.6

 
(1.1
)
 
—

Curtailment loss
0.3

 
—

 
—

 
—

Net periodic benefit cost
$
0.7

 
$
1.7

 
$
(1.1
)
 
$
0.1