v3.10.0.1
Pensions and Other Postretirement Benefits
 6 Months Ended
Jun. 30, 2018
Retirement Benefits [Abstract]  
Pensions and Other Postretirement Benefits
Pensions and Other Postretirement Benefits

Three Months Ended June 30, 2018

Three Months Ended June 30, 2017

Pension Benefits

Global OPEB Plans

Pension Benefits

Global OPEB Plans

U.S.

Non-U.S.


U.S.

Non-U.S.

Service cost
$
82


$
39


$
5


$
79


$
40


$
6

Interest cost
512


117


48


536


126


49

Expected return on plan assets
(972
)

(208
)

—


(919
)

(172
)

—

Amortization of prior service cost (credit)
(1
)

1


(3
)

(1
)

1


(4
)
Amortization of net actuarial (gains) losses
3


37


13


(2
)

48


8

Net periodic pension and OPEB (income) expense
$
(376
)

$
(14
)

$
63


$
(307
)

$
43


$
59



 
Six Months Ended June 30, 2018
 
Six Months Ended June 30, 2017
 
Pension Benefits
 
Global OPEB Plans
 
Pension Benefits
 
Global OPEB Plans
 
U.S.
 
Non-U.S.
 
 
U.S.
 
Non-U.S.
 
Service cost
$
165


$
105


$
10


$
158


$
86


$
10

Interest cost
1,025


237


98


1,072


251


98

Expected return on plan assets
(1,945
)

(420
)

—


(1,838
)

(343
)

—

Amortization of prior service cost (credit)
(2
)

2


(7
)

(2
)

2


(7
)
Amortization of net actuarial (gains) losses
5


74


26


(3
)

95


16

Net periodic pension and OPEB (income) expense
$
(752
)

$
(2
)

$
127


$
(613
)

$
91


$
117



The non-service cost components of the net periodic pension and OPEB income of $420 million and $330 million in the three months ended June 30, 2018 and 2017 and $841 million and $659 million in the six months ended June 30, 2018 and 2017 are presented in Interest income and other non-operating income, net. We used the practical expedient for retrospective presentation of the 2017 non-service cost components in this disclosure. Refer to Note 1 for additional details on the adoption of ASU 2017-07.

We expect to contribute approximately $1.2 billion to our non-U.S. pension plans in 2018, inclusive of approximately $300 million in payments of pension obligations for separated employees in Korea. Refer to Note 16 for additional information.