XML 29 R19.htm IDEA: XBRL DOCUMENT v3.7.0.1
Employee Retirement Benefits
 3 Months Ended
Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract]  
Employee Retirement Benefits
Employee Retirement Benefits
The following summarizes the components of net periodic benefit cost for our qualified and supplemental pension plans:
(Dollars in millions)
Three months ended March 31,
 
2017
 
2016
Service cost
$
3

 
$
3

Interest cost
3

 
3

Expected return on plan assets
(5
)
 
(5
)
Amortization of actuarial loss and prior service cost
1

 
1

Net periodic benefit cost
$
2

 
$
2

 
 
 
 


See our 2016 Annual Report on Form 10-K, Item 8, Note 13, Employee Retirement Benefits, Page 155, for information on our retirement benefits. We made matching contributions totaling $6 million and $4 million to our
401(k) and Top Hat savings plans during the first quarter of 2017 and 2016, respectively.

We contributed $5 million to our qualified pension plan during the first three months of 2017.