Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Other Intangible Assets

Changes in the carrying amount of goodwill

The following table sets forth the changes in the carrying amount of goodwill for the years ended December 31, 2012 and 2011 (in millions):

Balance at December 31, 2010	$	98.3
Acquisitions		4.7
Dispositions		(0.1	)
Current period adjustments		(2.0	)
Foreign currency impact		(0.7	)
Balance at December 31, 2011		100.2
Acquisitions		10.5
Impairment of assets		(1.4	)
Current period adjustments		6.1
Foreign currency impact		0.5
Balance at December 31, 2012	$	115.9

Summary of other intangible assets subject to amortization

The following is a summary of intangible assets at December 31, (in millions):

	2012							2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Existing technology and related patents	$	151.5	$	(47.6	)	$	103.9	$	141.4	$	(29.9	)	$	111.5
Customer relationships		15.3		(7.9	)		7.4		22.0		(5.1	)		16.9
Trade names		0.2		(0.2	)		—		0.2		(0.2	)		—
Intangible assets subject to amortization		167.0		(55.7	)		111.3		163.6		(35.2	)		128.4
In-process research and development		5.7		—			5.7		8.0		—			8.0
Intangible assets	$	172.7	$	(55.7	)	$	117.0	$	171.6	$	(35.2	)	$	136.4

Schedule of estimated future amortization expense related to amortizable intangible asset

The estimated future amortization expense related to amortizable intangible assets at December 31, 2012 is as follows (in millions):

2013	$	20.4
2014		19.8
2015		19.6
2016		19.1
2017		18.7
Thereafter		13.7
Total	$	111.3