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Goodwill and Intangible Assets (Tables)
9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets [Table Text Block]
Balances of intangible assets, net, excluding goodwill as of September 30, 2016, are as follows:
 
December 31,
2015

 
 Amortization
 
September 30,
2016

Millions
 
 
 
 
 
Intangible Assets
 
 
 
 
 
Definite-Lived Intangible Assets
 
 
 
 
 
Customer Relationships
$60.8
 
$(3.2)
 

$57.6

Developed Technology and Other (a)
7.2
 
(0.6)
 
6.6

Total Definite-Lived Intangible Assets
68.0

 
(3.8)
 
64.2

Indefinite-Lived Intangible Assets
 
 
 
 
 
Trademarks and Trade Names
16.6

 
n/a
 
16.6

Total Intangible Assets

$84.6

 
$(3.8)
 

$80.8


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