Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2014

Goodwill and Other Intangible Assets

Summary of intangible assets

The following is a summary of intangible assets (in millions):

	March 31, 2014							December 31, 2013
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Existing technology and related patents	$	156.6	$	(71.5	)	$	85.1	$	157.9	$	(68.2	)	$	89.7
Customer relationships	19.2		(9.5		)	9.7		18.0		(7.8		)	10.2
Trade names	0.2		(0.2		)	—		0.2		(0.2		)	—
Intangible assets subject to amortization	176.0		(81.2		)	94.8		176.1		(76.2		)	99.9
In-process research and development	5.7		—			5.7		5.7		—			5.7
Intangible assets	$	181.7	$	(81.2	)	$	100.5	$	181.8	$	(76.2	)	$	105.6