Other Income (Expense) (Tables)

12 Months Ended

Dec. 31, 2014

Other Income (Expense) [Abstract]

Other Income (Expense) [Table Text Block]

Year Ended December 31	2014		2013		2012
Millions
AFUDC – Equity		$7.8		$4.6		$5.1
Gain on Sale of Available-for-sale Securities	0.2		2.2		—
Investments and Other Income	0.6		2.5		0.9
Total Other Income		$8.6		$9.3		$6.0