Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2015

Goodwill and Intangible Assets [Abstract]

Schedule of Goodwill [Table Text Block]

The following table summarizes changes to goodwill by business segment for the six months ended June 30, 2015:

	Investments and Other
Millions
Balance as of December 31, 2014		$2.9
Acquired Goodwill	127.2
Balance as of June 30, 2015		$130.1

Schedule of Intangible Assets [Table Text Block]

Balances of intangible assets, net, excluding goodwill as of June 30, 2015, are as follows:

	December 31, 2014		Additions as a Result of Acquisitions		Amortization		June 30, 2015
Millions
Intangible Assets
Definite-Lived Intangible Assets
Customer Relationships	—			$60.1		$1.3		$58.8
Developed Technology and Other (a)		$1.9	6.3		0.3		7.9
Total Definite-Lived Intangible Assets	1.9		66.4		1.6		66.7
Indefinite-Lived Intangible Assets
Trademarks and Trade Names	—		16.6		n/a		16.6
Total Intangible Assets		$1.9		$83.0		$1.6		$83.3

(a) Developed Technology and Other includes patents, non-compete agreements, and land easements.