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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
 
 
Three Months Ended
 
 
March 31,
(in millions)
 
2015
 
2014
Net income
 
$
1.1

 
$
8.4

 
 
 
 
 
Weighted average shares for basic EPS
 
136.9

 
97.0

Dilutive potential shares from grants of RSUs, PRSUs and stock options(a)
 
0.7

 

Weighted average shares for diluted EPS
 
137.6

 
97.0


(a)
The potential impact of an aggregate 0.4 million granted RSUs, PRSUs and stock options for the three months ended March 31, 2015, was antidilutive.