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Other Income (Expense)
 12 Months Ended
Dec. 31, 2013
Other Income (Expense) [Abstract]  
Other Income (Expense) [Text Block]
OTHER INCOME (EXPENSE)

Year Ended December 31
2013

2012

2011

Millions
 
 
 
AFUDC – Equity

$4.6


$5.1


$2.5

Gain on Sale of Available-for-sale Securities
2.2

—

—

Investments and Other Income
2.5

0.9

1.9

Total Other Income

$9.3


$6.0


$4.4