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Pension and Other Postretirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2020
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits
The following tables present the components of net periodic cost for our pension and postretirement benefit plans.
 
Pension Benefits
 
Postretirement Benefits
Three Months Ended June 30,
2020
 
2019
 
2020
 
2019
Components of net periodic cost (a):
 
 
 
 
 
 
 
Service cost
$
8

 
$
7

 
$
—

 
$
1

Interest cost
41

 
48

 
3

 
4

Expected return on plan assets
(49
)
 
(46
)
 
—

 
—

Amortization of actuarial loss (gain) (b)
26

 
24

 
(4
)
 
(5
)
Net periodic cost
$
26

 
$
33

 
$
(1
)
 
$
—

 
Pension Benefits
 
Postretirement Benefits
Six Months Ended June 30,
2020

2019

2020

2019
Components of net periodic cost (a):
 
 
 
 
 
 
 
Service cost
$
15

 
$
14

 
$
1

 
$
1

Interest cost
82

 
96

 
6

 
8

Expected return on plan assets
(97
)
 
(92
)
 
—

 
—

Amortization of actuarial loss (gain) (b)
52

 
48

 
(8
)
 
(9
)
Net periodic cost
$
52

 
$
66

 
$
(1
)
 
$
—


(a) Amounts reflect our domestic plans only.
(b) Reflects amounts reclassified from accumulated other comprehensive loss to net earnings.