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Pension and Other Postretirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2018
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
The components of net periodic benefit cost were as follows:
 
Third quarter ended
 
Nine months ended
 
September 30,

September 30,
 
2018
 
2017

2018
 
2017
Pension benefits
 
 
 
 
 
 
 
Service cost
$
9

 
$
23

 
$
37

 
$
67

Interest cost
54

 
59

 
164

 
175

Expected return on plan assets
(76
)
 
(83
)
 
(230
)
 
(248
)
Recognized net actuarial loss
42

 
55

 
126

 
165

Amortization of prior service cost (benefit)
1

 
1

 
3

 
4

Settlements
4

 
—

 
4

 
—

Curtailments
—

 
—

 
14

 
—

Net periodic benefit cost(1)
$
34

 
$
55

 
$
118

 
$
163

 
 
 
 
 
 
 
 
Other postretirement benefits
 
 
 
 
 
 
 
Service cost
$
2

 
$
2

 
$
6

 
$
6

Interest cost
7

 
7

 
21

 
22

Recognized net actuarial loss
1

 
2

 
5

 
4

Amortization of prior service cost (benefit)
(2
)
 
(2
)
 
(6
)
 
(6
)
Curtailments
(28
)
 
—

 
(28
)
 
—

Net periodic benefit cost(1)
$
(20
)
 
$
9

 
$
(2
)
 
$
26

 
(1) 
Service cost was included within Cost of goods sold, Selling, general administrative, and other expenses, and Research and development expenses; curtailments and settlements were included in Restructuring and other charges; and all other cost components were recorded in Other expense (income), net in the Statement of Consolidated Operations.