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Pensions and Other Postretirement Benefits
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Pensions and Other Postretirement Benefits Pensions and Other Postretirement Benefits

Three Months Ended March 31, 2020

Three Months Ended March 31, 2019

Pension Benefits
 
Global OPEB Plans
 
Pension Benefits
 
Global OPEB Plans

U.S.
 
Non-U.S.
 
 
U.S.
 
Non-U.S.
 
Service cost
$
62


$
29


$
5


$
98


$
35


$
4

Interest cost
429


91


43


566


120


54

Expected return on plan assets
(816
)

(170
)

—


(868
)

(195
)

—

Amortization of prior service cost (credit)
(1
)

2


(2
)

(1
)

1


(3
)
Amortization of net actuarial losses
4


42


19


3


29


8

Net periodic pension and OPEB (income) expense
$
(322
)
 
$
(6
)
 
$
65

 
$
(202
)
 
$
(10
)

$
63


 
 
 
 
 
 
 
 
 
 
 
 

The non-service cost components of net periodic pension and other postretirement benefits (OPEB) income of $338 million and $230 million in the three months ended March 31, 2020 and 2019 are presented in Interest income and other non-operating income, net.