Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets [Table Text Block]

Balances of intangible assets, net, excluding goodwill as of September 30, 2018, are as follows:

	December 31, 2017		Additions		Amortization	September 30, 2018
Millions
Intangible Assets
Definite-Lived Intangible Assets
Customer Relationships		$54.7		$0.2	$(3.2)		$51.7
Developed Technology and Other (a)	6.3		2.5		(0.9)	7.9
Total Definite-Lived Intangible Assets	61.0		2.7		(4.1)	59.6
Indefinite-Lived Intangible Assets
Trademarks and Trade Names	16.6		—		n/a	16.6
Total Intangible Assets		$77.6		$2.7	$(4.1)		$76.2

(a)

Developed Technology and Other includes patents, non-compete agreements, land easements and trade names with finite lives.