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Pension and Other Postretirement Benefits (Tables)
 3 Months Ended
Mar. 31, 2018
Other Postretirement Benefits  
Defined Benefit Plan Disclosure [Line Items]  
Components of Net Periodic Pension and Other Postretirement Benefits Costs
 
Three Months Ended
 
March 31
Other postretirement benefits
2018
 
2017
Service cost
$
—

 
$
—

Interest cost
1

 
1

Recognized prior service credit
(9
)
 
(10
)
Recognized net loss
1

 
1

Net periodic benefit
$
(7
)
 
$
(8
)
Pension Benefits - U.S. Plans | Pension Plan  
Defined Benefit Plan Disclosure [Line Items]  
Components of Net Periodic Pension and Other Postretirement Benefits Costs
The components of net periodic pension and other postretirement benefits costs for the three months ended March 31, 2018 and 2017 were as follows:
 
Three Months Ended
 
March 31
Pension benefits – U.S. plans
2018
 
2017
Service cost
$
4

 
$
3

Interest cost
12

 
12

Expected return on plan assets
(21
)
 
(20
)
Recognized net loss
12

 
13

Net periodic cost
$
7

 
$
8
Pension Benefits - Non-U.S. Plans | Pension Plan  
Defined Benefit Plan Disclosure [Line Items]  
Components of Net Periodic Pension and Other Postretirement Benefits Costs
 
Three Months Ended
 
March 31
Pension benefits – Non-U.S. plans
2018
 
2017
Service cost
$
7

 
$
6

Interest cost
19

 
19

Expected return on plan assets
(40
)
 
(35
)
Recognized prior service credit
(3
)
 
(3
)
Recognized net loss
11

 
10

Net periodic benefit
$
(6
)
 
$
(3
)