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Employee Benefits (Tables)
 9 Months Ended
Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]  
Schedule of Costs of Retirement Plans [Table Text Block]
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)
2013
 
2012
 
2013
 
2012
Service cost
$
1.1

 
$
0.9

 
$
3.2

 
$
2.8

Interest cost
14.0

 
14.8

 
42.1

 
44.5

Expected return on plan assets
(13.9
)
 
(14.9
)
 
(41.7
)
 
(38.1
)
Amortization of net loss
3.7

 
1.0

 
11.1

 
6.8

Total periodic pension cost
$
4.9

 
$
1.8

 
$
14.7

 
$
16.0