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Pensions and Other Post-retirement Benefits
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Pensions and Other Post-retirement Benefits Pensions and Other Post-retirement Benefits
Components of net periodic benefit cost consisted of the following:
 
 
Pension Benefits
 
Other Benefits
(In thousands)
 
2020
 
2019
 
2020
 
2019
Three Months Ended March 31,
 
 
 
 
 
 
 
 
Service cost
 
$
3,012

 
$
2,423

 
$
99

 
$
89

Interest cost
 
3,726

 
4,705

 
179

 
249

Expected return on plan assets
 
(8,503
)
 
(9,653
)
 
—

 
—

Amortization of prior service cost (credit)
 
46

 
(4
)
 
(98
)
 
(101
)
Recognized net actuarial losses
 
3,935

 
2,577

 
286

 
217

Net periodic benefit cost (a)
 
$
2,216

 
$
48

 
$
466

 
$
454


(a) Components of net periodic benefit cost other than service cost are included in the line item "Other income, net" in the unaudited Condensed Consolidated Statement of Income.
We made contributions of $1.9 million and $1.8 million to our pension plans during the three months ended March 31, 2020 and 2019, respectively. We expect to make total contributions of approximately $7.6 million to our pension plans in 2020 which are primarily associated with our International segment.