XML 27 R16.htm IDEA: XBRL DOCUMENT v3.7.0.1
EMPLOYEE BENEFITS
 3 Months Ended
Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract]  
EMPLOYEE BENEFITS
EMPLOYEE BENEFITS

The following tables show the components of net periodic pension and OPEB costs for our benefit plans.
 
 
Pension Costs
 
 
Three Months Ended March 31
(in millions)
 
2017
 
2016
Service cost
 
$
11.7

 
$
11.3

Interest cost
 
31.2

 
33.2

Expected return on plan assets
 
(49.6
)
 
(49.0
)
Amortization of prior service cost
 
0.7

 
0.9

Amortization of net actuarial loss
 
21.9

 
20.5

Net periodic benefit cost
 
$
15.9

 
$
16.9


 
 
OPEB Costs
 
 
Three Months Ended March 31
(in millions)
 
2017
 
2016
Service cost
 
$
6.3

 
$
6.7

Interest cost
 
8.5

 
9.2

Expected return on plan assets
 
(13.7
)
 
(13.1
)
Amortization of prior service credit
 
(2.8
)
 
(2.3
)
Amortization of net actuarial loss
 
1.5

 
2.3

Net periodic benefit (credit) cost
 
$
(0.2
)
 
$
2.8



During the three months ended March 31, 2017, we made payments of $104.1 million to our pension plans and $1.9 million to our OPEB plans. We expect to make payments of $9.0 million related to our pension plans and $6.5 million related to our OPEB plans during the remainder of 2017, dependent upon various factors affecting us, including our liquidity position and possible tax law changes.