XML 24 R14.htm IDEA: XBRL DOCUMENT v3.7.0.1
Employee Benefit Plans
 3 Months Ended
Mar. 31, 2017
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
EMPLOYEE BENEFIT PLANS
7.
EMPLOYEE BENEFIT PLANS

The components of net periodic benefit cost related to our defined benefit plans were as follows (in millions):
 
Pension Plans
 
Other Postretirement
Benefit Plans
 
2017
 
2016
 
2017
 
2016
Three months ended March 31:
 
 
 
 
 
 
 
Service cost
$
31

 
$
28

 
$
1

 
$
2

Interest cost
21

 
21

 
3

 
3

Expected return on plan assets
(37
)
 
(35
)
 
—

 
—

Amortization of:
 
 
 
 
 
 
 
Net actuarial (gain) loss
13

 
12

 
(1
)
 
—

Prior service credit
(5
)
 
(5
)
 
(4
)
 
(4
)
Net periodic benefit cost
$
23

 
$
21

 
$
(1
)
 
$
1



Our anticipated contributions to our pension and other post retirement benefit plans during 2017 have not changed from amounts previously disclosed in our financial statements for the year ended December 31, 2016. We contributed $7 million and $8 million, respectively, to our pension plans and $5 million and $4 million, respectively, to our other postretirement benefit plans during the three months ended March 31, 2017 and 2016.