Intangible Assets

6 Months Ended

Jun. 30, 2015

Intangible Assets [Abstract]

Intangible Assets

NOTE 8.  INTANGIBLE ASSETS 

The following table details amounts related to our intangible assets as of June 30, 2015 and December 31, 2014.

		June 30, 2015		December 31, 2014
	Estimated Useful Life	Gross Carrying Amount	Accumulated Amortization	Gross Carrying Amount	Accumulated Amortization
Amortizing intangible assets
Customer relationships	20 years	$ 165.4	$ 72.6	$ 165.4	$ 68.4
Developed technology	15 years	86.5	48.1	84.9	45.1
Other	Various	21.4	2.6	21.3	2.4
Total		$ 273.3	$ 123.3	$ 271.6	$ 115.9
Non-amortizing intangible assets
Trademarks and brand names	Indefinite	346.7		345.7
Total intangible assets		$ 620.0		$ 617.3

	Six Months Ended
	June 30,
	2015	2014
Amortization expense	$ 7.4	$ 7.2