Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill and Other Intangible Assets

Changes in the carrying amount of goodwill

Balance at December 31, 2009	$	47.5
Acquisitions		52.4
Foreign currency impact		(1.6	)
Balance at December 31, 2010		98.3
Acquisitions		4.7
Dispositions		(0.1	)
Measurement period adjustments		(2.0	)
Foreign currency impact		(0.7	)
Balance at December 31, 2011	$	100.2

Summary of intangible assets

	2011							2010
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Existing technology and related patents	$	141.4	$	(29.9	)	$	111.5	$	112.0	$	(15.0	)	$	97.0
Customer relationships		22.0		(5.1	)		16.9		20.2		(2.5	)		17.7
Trade names		0.2		(0.2	)		—		0.4		(0.3	)		0.1
Intangible assets subject to amortization		163.6		(35.2	)		128.4		132.6		(17.8	)		114.8
In-process research and development		8.0		—			8.0		21.3		—			21.3
Intangible assets	$	171.6	$	(35.2	)	$	136.4	$	153.9	$	(17.8	)	$	136.1

Schedule of estimated future amortization expense related to amortizable intangible asset

The estimated future amortization expense related to amortizable intangible assets at December 31, 2011 is as follows (in millions):

2012	$	19.7
2013		20.7
2014		20.1
2015		19.5
2016		18.6
Thereafter		37.8
Total	$	136.4