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Pension and Post-retirement Benefit Plans
 3 Months Ended
Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Pension and Post-retirement Benefit Plans
Pension and Post-retirement Benefit Plans:

The components of net periodic benefit cost were as follows (in millions):
 
For the Three Months Ended March 31,
 
2014
 
2013
 
2014
 
2013
 
Pension Benefits
 
Other Benefits
Service cost
$
1.1

 
$
1.3

 
$
—

 
$
—

Interest cost
4.4

 
4.1

 
—

 
0.1

Expected return on plan assets
(5.7
)
 
(5.2
)
 
—

 
—

Amortization of prior service cost
0.1

 
0.1

 
(0.8
)
 
(0.8
)
Recognized actuarial loss
1.6

 
2.4

 
0.4

 
0.4

Settlements and curtailments
—

 
0.5

 
—

 
—

Net periodic benefit cost (1)
$
1.5

 
$
3.2

 
$
(0.4
)
 
$
(0.3
)
(1) All net periodic benefit cost for the three months ended March 31, 2014 and 2013 related to continuing operations.