XML 26 R15.htm IDEA: XBRL DOCUMENT v3.4.0.3
Pension and Other Postretirement Benefit Plans
 3 Months Ended
Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Pension and Other Postretirement Benefit Plans
Pension Benefits

The components of net periodic cost are as follows:
 
Pension Benefits
 
Three Months Ended March 31,
(in millions)
2016
 
2015
Service cost
$
1.2

 
$
1.4

Interest cost
8.2

 
9.6

Expected return on plan assets
(14.5
)
 
(15.6
)
Amortization of prior service cost
(0.2
)
 
—

Amortization of net loss (gain)
2.9

 
3.1

Net periodic cost
$
(2.4
)
 
$
(1.5
)

The Company expects, based on current actuarial calculations, to contribute approximately $8.0 million to its defined benefit plans, of which $2.1 million has been contributed during the first three months of 2016. The Company contributed $17.0 million to its defined benefit plans in 2015. Cash contributions for subsequent years will depend on a number of factors, including the impact of the Pension Protection Act signed into law in 2006, changes in minimum funding requirements, long-term interest rates, the investment performance of plan assets and changes in employee census data affecting the Company’s projected benefit obligations.