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Employee Benefits
9 Months Ended
Sep. 30, 2012
Compensation and Retirement Disclosure [Abstract]  
Employee Benefits
Employee Benefits
The following table presents the components of our company-sponsored pension costs for the three and nine months ended September 30:
 
 
Three Months
 
Nine Months
(in millions)
2012
 
2011
 
2012
 
2011
Service cost
$
0.9

 
$
0.9

 
$
2.8

 
$
2.7

Interest cost
14.8

 
15.3

 
44.5

 
45.9

Expected return on plan assets
(14.9
)
 
(10.7
)
 
(38.1
)
 
(32.2
)
Amortization of net loss
1.0

 
2.4

 
6.8

 
7.2

Total periodic pension cost
$
1.8

 
$
7.9

 
$
16.0

 
$
23.6


We expect to contribute $72.2 million to our company-sponsored pension plans in 2012 of which we have contributed $63.1 million through September 30, 2012.