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Goodwill and Other Intangible Assets:
3 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets:
Goodwill and Other Intangible Assets:

Goodwill represents the excess of cost over the fair value of net identifiable tangible and intangible assets acquired through various business combinations. The cost of acquired entities at the date of the acquisition is allocated to identifiable assets, and the excess of the total purchase price over the amounts assigned to identifiable assets has been recorded as goodwill. In accordance with authoritative guidance, goodwill is to be assigned to a company’s reporting units and tested for impairment at least annually using a consistent measurement date, which for us is January 1st of each year. Goodwill is tested at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment, referred to as a component. A component of an operating segment is a reporting unit for which discrete financial information is available and our executive management team regularly reviews the operating results of that component. Additionally, components of an operating segment can be combined as a single reporting unit if the components have similar economic characteristics. If the fair value of the reporting unit exceeds its carrying value, goodwill is not impaired and no further testing is performed. If the carrying value of the reporting unit exceeds its fair value, then a second step must be performed, and the implied fair value of the reporting unit’s goodwill must be determined and compared to the carrying value of the reporting unit’s goodwill. If the carrying value of a reporting unit’s goodwill exceeds its implied fair value, then an impairment loss equal to the difference will be recorded. Prior to performing the two step evaluation, an entity has the option to perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit exceeds the carrying value. Under the qualitative assessment, if an entity determines that it is more likely than not that a reporting unit’s fair value exceeds its carrying value, then the entity is not required to complete the two step goodwill impairment evaluation.

As of January 1, 2015, we have three reporting units, excluding corporate level activities. In performing our annual goodwill impairment assessment, we estimated the fair value of each of our three reporting units utilizing both an income approach and a market approach. The income approach is based on the present value of projected cash flows and a terminal value, which represents the expected normalized cash flows of the reporting unit beyond the cash flows from the discrete projection period of five years. We discounted the estimated cash flows for each of the reporting units using a rate that represents a market participant’s weighted average cost of capital commensurate with the reporting unit’s underlying business operations. The market approach included the use of comparable multiples of publicly traded companies operating in businesses similar to ours. We also reconciled the estimated fair value of our reporting units to our total market capitalization.

2. Goodwill and Other Intangible Assets, Continued:

As of January 1, 2015, based on our assessment performed with respect to our three reporting units as described above, we concluded that goodwill for all of our reporting units was not impaired as of that date, and accordingly, no further analysis was required.

As previously discussed, as a result of recent changes in our executive management team, we have begun to reorganize the way in which we manage our business and will reassess our reporting unit structure during the second quarter of 2015.

Other intangible assets arising from business combinations are initially recorded at estimated fair value and amortized over the estimated useful lives.

Other intangible assets were as follows at:
  
 
March 31, 2015
 
December 31, 2014
(Millions)
 
Gross
Cost
 
Accumulated
Amortization
 
Net Carrying
Value
 
Gross
Cost
 
Accumulated
Amortization
 
Net Carrying
Value
Franchise rights
 
$
1,285.1

 
$
(254.0
)
 
$
1,031.1

 
$
1,285.1

 
$
(243.3
)
 
$
1,041.8

Customer lists
 
1,914.0

 
(1,249.8
)
 
664.2

 
1,914.0

 
(1,203.4
)
 
710.6

Cable franchise rights
 
39.8

 
(28.5
)
 
11.3

 
39.8

 
(28.2
)
 
11.6

Other (a)
 
42.0

 
(38.1
)
 
3.9

 
37.9

 
(37.9
)
 
—

Balance
 
$
3,280.9

 
$
(1,570.4
)
 
$
1,710.5

 
$
3,276.8

 
$
(1,512.8
)
 
$
1,764.0


(a)
During the first quarter of 2015, we acquired for cash non-exclusive licenses to various patents, which are being amortized on a straight-line basis over the estimated useful life of 3 years.
 
Intangible asset amortization methodology and useful lives were as follows as of March 31, 2015:
Intangible Assets
  
Amortization Methodology
  
Estimated Useful Life
Franchise rights
  
straight-line
  
30 years
Customer lists
  
sum-of-years-digits
  
9 - 15 years
Cable franchise rights
  
straight-line
  
15 years
Other
  
straight-line
  
1 - 3 years


Amortization expense for intangible assets subject to amortization was $57.6 million for the three month period ended March 31, 2015, as compared to $65.6 million for the same period in 2014. Amortization expense for intangible assets subject to amortization was estimated to be as follows for each of the twelve month periods ended March 31:
Year
(Millions)
2016
$
215.2

2017
187.1

2018
159.1

2019
131.3

2020
106.2

Thereafter
911.6

Total
$
1,710.5