Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets [Table Text Block]

The balance of intangible assets, net, as of June 30, 2019, is as follows:

	December 31, 2018		Amortization	Other (b)	June 30, 2019
Millions
Intangible Assets
Definite-Lived Intangible Assets
Customer Relationships		$50.7	$(1.1)	$(49.6)	—
Developed Technology and Other (a)	7.5		(0.3)	(6.1)		$1.1
Total Definite-Lived Intangible Assets	58.2		(1.4)	(55.7)	1.1
Indefinite-Lived Intangible Assets
Trademarks and Trade Names	16.6		n/a	(16.6)	—
Total Intangible Assets		$74.8	$(1.4)	$(72.3)		$1.1

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

(b)

On March 26, 2019, ALLETE completed the sale of U.S. Water Services which resulted in the removal of the related intangible assets from the Consolidated Balance Sheet.