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Pensions and Other Benefit Programs
 6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Pensions and Other Benefit Programs Pensions and Other Benefit Programs
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
 
June 30,
 
June 30,
 
June 30,
 
2019
 
2018
 
2019
 
2018
 
2019
 
2018
Service cost
$
21

 
$
9

 
$
388

 
$
575

 
$
228

 
$
405

Interest cost
15,708

 
15,108

 
4,308

 
4,591

 
1,637

 
1,607

Expected return on plan assets
(23,184
)
 
(25,119
)
 
(8,505
)
 
(9,118
)
 
—

 
—

Amortization of transition credit
—

 
—

 
(1
)
 
(2
)
 
—

 
—

Amortization of prior service (credit) cost
(15
)
 
(15
)
 
60

 
(18
)
 
81

 
88

Amortization of net actuarial loss
6,037

 
7,628

 
1,572

 
1,870

 
503

 
881

Settlement (1)
801

 
—

 
397

 
—

 
—

 
—

Net periodic benefit (income) cost
$
(632
)
 
$
(2,389
)
 
$
(1,781
)
 
$
(2,102
)
 
$
2,449

 
$
2,981

Contributions to benefit plans
$
2,423

 
$
1,906

 
$
878

 
$
769

 
$
4,457

 
$
4,316

 
 
 
 
 
 
 
 
 
 
 
 
 
Defined Benefit Pension Plans
 
Nonpension Postretirement Benefit Plans
 
United States
 
Foreign
 
 
 
Six Months Ended
 
Six Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
June 30,
 
2019
 
2018
 
2019
 
2018
 
2019
 
2018
Service cost
$
42

 
$
46

 
$
772

 
$
1,164

 
$
483

 
$
811

Interest cost
31,586

 
30,724

 
8,796

 
9,287

 
3,291

 
3,210

Expected return on plan assets
(46,363
)
 
(50,543
)
 
(17,269
)
 
(18,304
)
 
—

 
—

Amortization of transition credit
—

 
—

 
(3
)
 
(3
)
 
—

 
—

Amortization of prior service (credit) cost
(30
)
 
(30
)
 
123

 
(37
)
 
161

 
176

Amortization of net actuarial loss
13,073

 
15,704

 
3,184

 
3,783

 
1,014

 
1,815

Settlement (1)
801

 
—

 
397

 
—

 
—

 
—

Net periodic benefit (income) cost
$
(891
)
 
$
(4,099
)
 
$
(4,000
)
 
$
(4,110
)
 
$
4,949

 
$
6,012

Contributions to benefit plans
$
4,051

 
$
3,194

 
$
9,088

 
$
9,979

 
$
9,213

 
$
9,111


(1) Approximately $0.7 million and $0.3 million of total settlement charges were recorded in restructuring charges and discontinued operations, respectively, for the three and six months ended June 30, 2019.