GOODWILL AND OTHER ACQUISITION INTANGIBLES (Tables)

6 Months Ended

Jun. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Activity in the Goodwill Balances for Each Segment

The following is the activity in the goodwill balances for each segment.

	Aerospace Materials			Industrial Materials			In Process Separation			Additive Technologies		Total
Balance at December 31, 2014	$	233.7		$	182.2		$	65.1		$	27.8	$	508.8
2015 Activity:
Foreign currency translation adjustments	(0.5		)	(0.4		)	(0.6		)	—		(1.5		)
Balance at June 30, 2015	$	233.2		$	181.8		$	64.5		$	27.8	$	507.3

Other Acquisition Intangibles

Other acquisition intangibles consisted of the following major classes:

	Weighted Average Useful Life (Years)	Gross Carrying Value				Accumulated Amortization						Net Carrying Value
	2015	June 30, 2015		December 31, 2014		June 30, 2015			December 31, 2014			June 30, 2015		December 31, 2014
Technology-based	14.4	$	47.3	$	47.3	$	(28.2	)	$	(26.6	)	$	19.1	$	20.7
Marketing-related	10.2	13.8		13.8		(8.1		)	(7.6		)	5.7		6.2
Customer-related	15.8	150.6		151.3		(41.2		)	(36.6		)	109.4		114.7
Total		$	211.7	$	212.4	$	(77.5	)	$	(70.8	)	$	134.2	$	141.6

Estimated Future Amortization Expense for Next Five Years

Assuming no change in the gross carrying amount of acquisition intangibles and the June 30, 2015 currency exchange rates remain constant, the estimated annual future amortization expense for 2015 and the next five years are as follows:

	2015		2016		2017		2018		2019		2020
Intangibles amortization expense	$	13.9	$	13.8	$	12.3	$	10.9	$	10.0	$	9.5