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Other Income (Expense) (Tables)
3 Months Ended
Mar. 31, 2015
Other Income (Expense) [Abstract]  
Other Income (Expense) [Table Text Block]
 
 
Three Months Ended
 
 
March 31,
 
 
2015

 
2014

Millions
 
 
 
 
AFUDC–Equity
 

$0.9

 

$1.8

Investments and Other Income
 
0.2

 
0.2

Total Other Income
 

$1.1

 

$2.0