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Retirement Plans and Other Retiree Benefits (Tables)
 3 Months Ended
Mar. 31, 2019
Retirement Benefits [Abstract]  
Components Of Net Periodic Benefit Cost
Components of Net periodic benefit cost for the three months ended March 31, 2019 and 2018 were as follows:

 
Pension Benefits
 
Other Retiree Benefits
 
United States
 
International
 
 
 
 
 
Three Months Ended March 31,
 
2019
 
2018
 
2019
 
2018
 
2019
 
2018
Service cost
$
—

 
$
—

 
$
4

 
$
4

 
$
4

 
$
4

Interest cost
23

 
21

 
5

 
6

 
11

 
10

Expected return on plan assets
(26
)
 
(29
)
 
(5
)
 
(6
)
 
(1
)
 
—

Amortization of actuarial loss (gain)
13

 
12

 
2

 
2

 
2

 
4

Net periodic benefit cost
$
10

 
$
4

 
$
6

 
$
6

 
$
16

 
$
18