Other, Net (Tables)
 6 Months Ended
Jun. 30, 2015
Other Income and Expenses [Abstract]  
Schedule Of Other, Net [Table Text Block]
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(in millions)
2015
 
2014
 
2015
 
2014
 
 
 
Predecessor
 
 
 
Predecessor
AFUDC Equity
$
4.9

 
$
2.7

 
$
8.4

 
$
4.3

Miscellaneous
—

 
(0.1
)
 
0.8

 
0.1

Total Other, net
$
4.9

 
$
2.6

 
$
9.2

 
$
4.4