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Pension and Other Postretirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2019
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,
 
2019
 
2018

2019
 
2018
Pension benefits
 
 
 
 
 
 
 
Service cost
$
6

 
$
9

 
$
19

 
$
37

Interest cost
59

 
54

 
177

 
164

Expected return on plan assets
(71
)
 
(76
)
 
(214
)
 
(230
)
Recognized net actuarial loss
35

 
42

 
104

 
126

Amortization of prior service cost (benefit)
—

 
1

 
1

 
3

Settlements
4

 
4

 
8

 
4

Curtailments
—

 
—

 
—

 
14

Net periodic benefit cost(1)
$
33

 
$
34

 
$
95

 
$
118

 
 
 
 
 
 
 
 
Other postretirement benefits
 
 
 
 
 
 
 
Service cost
$
1

 
$
2

 
$
5

 
$
6

Interest cost
7

 
7

 
21

 
21

Recognized net actuarial loss
1

 
1

 
3

 
5

Amortization of prior service cost (benefit)
(1
)
 
(2
)
 
(4
)
 
(6
)
Curtailments
—

 
(28
)
 
(58
)
 
(28
)
Net periodic benefit cost(1)
$
8

 
$
(20
)
 
$
(33
)
 
$
(2
)
 
(1) 
Service cost was included within Cost of goods sold, Selling, general administrative, and other expenses, and Research and development expenses; settlements and curtailments were included in Restructuring and other charges; and all other cost components were recorded in Other expense, net in the Statement of Consolidated Operations.