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Pensions and Other Benefit Programs (Tables)
 3 Months Ended
Mar. 31, 2019
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The components of net periodic benefit (income) cost were as follows:
 
Defined Benefit Pension Plans
 
Nonpension Postretirement Benefit Plans
 
United States
 
Foreign
 
 
 
Three Months Ended
 
Three Months Ended
 
Three Months Ended
 
March 31,
 
March 31,
 
March 31,
 
2019
 
2018
 
2019
 
2018
 
2019
 
2018
Service cost
$
21

 
$
37

 
$
384

 
$
589

 
$
255

 
$
407

Interest cost
15,878

 
15,616

 
4,488

 
4,696

 
1,654

 
1,603

Expected return on plan assets
(23,179
)
 
(25,424
)
 
(8,764
)
 
(9,185
)
 
—

 
—

Amortization of transition credit
—

 
—

 
(2
)
 
(2
)
 
—

 
—

Amortization of prior service (credit) cost
(15
)
 
(15
)
 
63

 
(18
)
 
80

 
88

Amortization of net actuarial loss
7,036

 
8,076

 
1,612

 
1,912

 
511

 
934

Net periodic benefit (income) cost
$
(259
)
 
$
(1,710
)
 
$
(2,219
)
 
$
(2,008
)
 
$
2,500

 
$
3,032

Contributions to benefit plans
$
1,628

 
$
1,409

 
$
8,210

 
$
9,210

 
$
4,756

 
$
4,795