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POSTRETIREMENT BENEFIT PLANS
 3 Months Ended
Mar. 31, 2019
Retirement Benefits [Abstract]  
POSTRETIREMENT BENEFIT PLANS POSTRETIREMENT BENEFIT PLANS
The following table provides the components of net periodic benefit cost for pension plans and other employee-related benefit plans for the three months ended March 31, 2019 and 2018. 
 
2019
 
2018
For the Three Months Ended March 31
Pension
 
Other
Benefits
 
Total
 
Pension
 
Other
Benefits
 
Total
Service cost
 
$
0.4

 
 
 
$
0.2

 
 
 
$
0.6

 
 
 
$
0.4

 
 
 
$
0.2

 
 
 
$
0.6

 
Interest cost
 
3.1

 
 
 
1.0

 
 
 
4.1

 
 
 
2.8

 
 
 
1.1

 
 
 
3.9

 
Expected return on plan assets
 
(3.8
)
 
 
 
—

 
 
 
(3.8
)
 
 
 
(3.4
)
 
 
 
(0.1
)
 
 
 
(3.5
)
 
Amortization of prior service cost (benefit)
 
0.2

 
 
 
(1.3
)
 
 
 
(1.1
)
 
 
 
0.2

 
 
 
(1.3
)
 
 
 
(1.1
)
 
Amortization of net actuarial loss
 
1.3

 
 
 
0.6

 
 
 
1.9

 
 
 
1.5

 
 
 
1.1

 
 
 
2.6

 
Total net periodic benefit cost
 
$
1.2

 
 
 
$
0.5

 
 
 
$
1.7

 
 
 
$
1.5

 
 
 
$
1.0

 
 
 
$
2.5

 

We made contributions to our global postretirement plans of $3.0 and $3.5 during the three months ended March 31, 2019 and 2018, respectively. We expect to make contributions of approximately $8 to $12 during the remainder of 2019, principally related to our other postretirement employee benefit plans.
Amortization from accumulated other comprehensive income into earnings related to prior service cost and net actuarial loss was $0.6 and $1.1, net of tax, during the three months ended March 31, 2019 and 2018, respectively. No other reclassifications from accumulated other comprehensive income into earnings were recognized during any of the presented periods.