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Pensions and Other Post-retirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2018
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)
 
2018
 
2017
 
2018
 
2017
Three Months Ended September 30,
 
 
 
 
 
 
 
 
Service cost
 
$
2,891

 
$
2,721

 
$
92

 
$
96

Interest cost
 
4,218

 
4,572

 
199

 
204

Expected return on plan assets
 
(9,097
)
 
(8,738
)
 
—

 
—

Amortization of prior service cost
 
(4
)
 
(4
)
 
(101
)
 
(6
)
Recognized net actuarial losses
 
3,454

 
3,184

 
188

 
15

Settlements
 
26

 
34

 
—

 
—

Net periodic benefit cost (a)
 
1,488

 
1,769

 
378

 
309

 
 
 
 
 
 
 
 
 
Nine Months Ended September 30,
 
 
 
 
 
 
 
 
Service cost
 
$
8,673

 
$
8,163

 
$
276

 
$
308

Interest cost
 
12,656

 
13,716

 
595

 
678

Expected return on plan assets
 
(27,289
)
 
(26,214
)
 
—

 
—

Amortization of prior service cost
 
(16
)
 
(12
)
 
(303
)
 
(216
)
Recognized net actuarial losses
 
10,360

 
9,552

 
564

 
49

Settlement/curtailment loss (credit)
 
80

 
102

 
—

 
—

Net periodic benefit cost, excluding below
 
4,464

 
5,307

 
1,132

 
819

Special termination charge
 
—

 
11,384

(b) 
—

 
—

Net periodic benefit cost (a)
 
4,464

 
16,691

 
1,132

 
819


(a) Components of net periodic benefit cost other than service cost are included in the line item "Other income, net" in the income statement.
(b) Represents the charge for special termination benefits related to the VRIP which were paid from our over funded North America pension plan and recorded as restructuring charges on the Condensed Consolidated Statement of Income. See further details in Note 5—Restructuring Charges.