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Employee Benefit Plans
 6 Months Ended
Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
EMPLOYEE BENEFIT PLANS
EMPLOYEE BENEFIT PLANS

Components of net pension expense were as follows:
 
Three months ended June 30,
 
Six months ended June 30,
 
2016
 
2015
 
2016
 
2015
 
(In thousands)
 
 
 
 
 
 
 
 
Pension Benefits
 
 
 
 
 
 
 
Company-administered plans:
 
 
 
 
 
 
 
Service cost
$
3,005

 
3,566

 
$
6,405

 
7,193

Interest cost
27,093

 
22,048

 
49,332

 
43,935

Expected return on plan assets
(22,667
)
 
(25,021
)
 
(45,752
)
 
(49,921
)
Amortization of:
 
 
 
 
 
 
 
Net actuarial loss
8,600

 
7,664

 
16,565

 
15,472

Prior service cost/(credit)
2,740

 
(74
)
 
2,740

 
(150
)
 
18,771

 
8,183

 
29,290

 
16,529

Union-administered plans
2,406

 
2,113

 
4,728

 
4,285

Net pension expense
$
21,177

 
10,296

 
$
34,018

 
20,814

 
 
 
 
 
 
 
 
Company-administered plans:
 
 
 
 
 
 
 
U.S.
$
19,263

 
8,599

 
$
30,437

 
17,491

Non-U.S.
(492
)
 
(416
)
 
(1,147
)
 
(962
)
 
18,771

 
8,183

 
29,290

 
16,529

Union-administered plans
2,406

 
2,113

 
4,728

 
4,285

Net pension expense
$
21,177

 
10,296

 
$
34,018

 
20,814

 
 
 
 
 
 
 
 


During the second quarter of 2016, we determined that certain pension benefit improvements made in 2009 had not been fully reflected in our projected benefit obligation. Because the amounts were not material to our consolidated financial statements in any individual prior period, and the cumulative amount is not material to 2016 results, we recognized a one-time, non-cash charge of $7.7 million in "Selling, general and administrative expenses" and a $12.8 million pre-tax increase to “Accumulated other comprehensive loss” in our second quarter 2016 consolidated condensed financial statements to correctly state the pension benefit obligation and account for these 2009 benefit improvements.

During the six months ended June 30, 2016 we contributed $42.3 million to our pension plans. In 2016, we expect total contributions to our pension plans to be approximately $80 million. We also maintain other postretirement benefit plans that are not reflected in the above table. The amount of postretirement benefit expense was not material for the three or six months ended June 30, 2016.