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Net Periodic Benefit Cost
 9 Months Ended
Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]  
NET PERIODIC BENEFIT COST
NET PERIODIC BENEFIT COST
Net periodic pension cost for the Company’s defined benefit pension plans and U.S. post-retirement medical plan includes the following components for the three months ended September 30:
 
U.S. Pension Benefits
 
Non-U.S. Pension Benefits
 
Other U.S. Post-retirement Benefits
 
Total
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
Service cost, net
$
123

 
$
114

 
$
4,364

 
$
3,481

 
$
54

 
$
83

 
$
4,541

 
$
3,678

Interest cost on projected benefit obligations
1,439

 
1,523

 
4,864

 
5,441

 
101

 
135

 
6,404

 
7,099

Expected return on plan assets
(1,788
)
 
(1,741
)
 
(8,650
)
 
(7,962
)
 
—

 
—

 
(10,438
)
 
(9,703
)
Recognition of prior service cost
—

 
—

 
(991
)
 
(335
)
 
22

 
—

 
(969
)
 
(335
)
Recognition of actuarial losses/(gains)
1,945

 
1,916

 
1,842

 
622

 
(247
)
 
(188
)
 
3,540

 
2,350

Net periodic pension cost/(credit)
$
1,719

 
$
1,812

 
$
1,429

 
$
1,247

 
$
(70
)
 
$
30

 
$
3,078

 
$
3,089



Net periodic pension cost for the Company’s defined benefit pension plans and U.S. post-retirement medical plan includes the following components for the nine months ended September 30:

 
U.S. Pension Benefits
 
Non-U.S. Pension Benefits
 
Other U.S. Post-retirement Benefits
 
Total
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
Service cost, net
$
370

 
$
342

 
$
12,991

 
$
10,707

 
$
162

 
$
249

 
$
13,523

 
$
11,298

Interest cost on projected benefit obligations
4,316

 
4,569

 
14,569

 
16,580

 
303

 
405

 
19,188

 
21,554

Expected return on plan assets
(5,365
)
 
(5,223
)
 
(25,912
)
 
(24,337
)
 
—

 
—

 
(31,277
)
 
(29,560
)
Recognition of prior service cost
—

 
—

 
(2,965
)
 
(1,045
)
 
65

 
—

 
(2,900
)
 
(1,045
)
Recognition of actuarial losses/(gains)
5,837

 
5,748

 
5,511

 
1,844

 
(741
)
 
(564
)
 
10,607

 
7,028

Net periodic pension cost/(credit)
$
5,158

 
$
5,436

 
$
4,194

 
$
3,749

 
$
(211
)
 
$
90

 
$
9,141

 
$
9,275



The Company expects to make employer contributions of approximately $7.7 million and $23.6 million to its U.S. pension plan and non-U.S. pension plans and employer contributions of approximately $1.1 million to its U.S. post-retirement medical plan during the year ended December 31, 2013. These estimates may change based upon several factors, including fluctuations in currency exchange rates, actual returns on plan assets and changes in legal requirements.