Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The following table summarizes the components of gross intangible asset, accumulated amortization, and net intangible asset balances as of December 31, 2016, and 2015 (in millions):

	December 31, 2016							December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Patents and developed technology	$	158.7	$	(141.6	)	$	17.1	$	159.7	$	(129.6	)	$	30.1
Distribution rights and others	9.2		(9.1		)	0.1		9.2		(8.0		)	1.2
Customer relationships	28.6		(14.3		)	14.3		28.6		(10.2		)	18.4
Total intangible assets	$	196.5	$	(165.0	)	$	31.5	$	197.5	$	(147.8	)	$	49.7

Schedule Of Estimated Future Amortization Expense Of Intangible Assets

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

Fiscal Year	Amount
2017	$	12.5
2018	8.6
2019	3.6
2020	3.4
2021	2.3
2022 and thereafter	1.1
Total	$	31.5