XML 48 R27.htm IDEA: XBRL DOCUMENT v3.7.0.1
Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract]  
Components of net periodic benefit (credit) cost for our retirement plans and postretirement plans
The components of net periodic benefit (credit) cost for our retirement plans and postretirement plans for the three months ended March 31 are as follows: 

(in millions)
Retirement Plans
Postretirement Plans
 
2017
 
2016
 
2017
 
2016
Service cost
$
1

 
$
1

 
$
—

 
$
—

Interest cost
18

 
20

 
—

 
1

Expected return on assets
(31
)
 
(31
)
 
—

 
—

Amortization of actuarial loss
4

 
4

 
—

 
—

Net periodic benefit cost
$
(8
)
 
$
(6
)
 
$
—

 
$
1