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Retirement Plans (Tables)
3 Months Ended
Mar. 31, 2015
Retirement Plans  
Components of net periodic benefit cost

 

 

Three Months Ended

 

 

 

March 31,

 

(in millions)

 

2015

 

2014

 

 

 

 

 

 

 

Service cost

 

$

0.9

 

$

0.9

 

Interest cost

 

1.8

 

2.0

 

Expected return on plan assets

 

(2.6

)

(2.7

)

Amortization of unrecognized loss

 

1.3

 

1.0

 

Net periodic benefit cost

 

$

1.4

 

$

1.2