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Pensions and Other Post-retirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
Components of net periodic benefit cost consisted of the following:
 
 
Pension Benefits
 
Other Benefits
(In thousands)
 
2019
 
2018
 
2019
 
2018
Three Months Ended June 30,
 
 
 
 
 
 
 
 
Service cost
 
$
2,736

 
$
2,891

 
$
89

 
$
83

Interest cost
 
4,721

 
4,219

 
249

 
175

Expected return on plan assets
 
(9,658
)
 
(9,096
)
 
—

 
—

Amortization of prior service cost (credit)
 
112

 
(6
)
 
(101
)
 
(125
)
Recognized net actuarial losses
 
2,534

 
3,453

 
217

 
351

Settlements
 
2,363

(b) 
27

 
—

 
141

Net periodic benefit cost (a)
 
$
2,808

 
$
1,488

 
$
454

 
$
625

 
 
 
 
 
 
 
 
 
Six Months Ended June 30,
 
 
 
 
 
 
 
 
Service cost
 
$
5,159

 
$
5,782

 
$
178

 
$
184

Interest cost
 
9,426

 
8,438

 
498

 
396

Expected return on plan assets
 
(19,311
)
 
(18,193
)
 
—

 
—

Amortization of prior service cost (credit)
 
108

 
(11
)
 
(202
)
 
(202
)
Recognized net actuarial losses
 
5,111

 
6,907

 
434

 
376

Settlements
 
2,363

(b) 
53

 
—

 
—

Net periodic benefit cost(a)
 
$
2,856

 
$
2,976

 
$
908

 
$
754


(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.
(b) Related to a non-cash charge associated with the closure of our pension plan in the U.K. and included in "Restructuring charges" on the unaudited Condensed Consolidated Statement of Income.