Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets

Schedule of 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, 2016, 2015 and 2014 (in millions):

Balance at December 31, 2013	$	127.4
Current period additions/adjustments		5.0
Foreign currency impact		(4.6	)
Balance at December 31, 2014	$	127.8
Current period additions/adjustments		6.8
Impairment		(0.7	)
Foreign currency impact		(3.3	)
Balance at December 31, 2015		130.6
Current period additions/adjustments		1.0
Foreign currency impact		(1.0	)
Balance at December 31, 2016	$	130.6

Summary of intangible assets

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

	2016							2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Existing technology and related patents	$	169.0	$	(113.9	)	$	55.1	$	154.5	$	(95.5	)	$	59.0
Customer relationships		20.0		(7.9	)		12.1		18.4		(5.9	)		12.5
Non compete conracts		1.8		(1.1	)		0.7		1.8		(0.6	)		1.2
Trade names		1.6		(0.4	)		1.2		1.6		(0.2	)		1.4
Intangible assets subject to amortization		192.4		(123.3	)		69.1		176.3		(102.2	)		74.1
In-process research and development		0.6		—			0.6		0.6		—			0.6
Intangible assets	$	193.0	$	(123.3	)	$	69.7	$	176.9	$	(102.2	)	$	74.7

Schedule of estimated future amortization expense related to amortizable intangible assets

The estimated future amortization expense related to amortizable intangible assets at December 31, 2016 is as follows (in millions):

2017	$	24.4
2018		20.0
2019		8.2
2020		7.3
2021		6.5
Thereafter		2.7
Total	$	69.1