Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	$ 178.6		$ 178.6		$ 176.3
Accumulated Amortization, intangible assets subject to amortization	(117.9)		(117.9)		(102.2)
Net Carrying Amount, intangible assets subject to amortization	60.7		60.7		74.1
Gross Carrying Amount, total intangible assets	178.6		178.6		176.9
Net Carrying Amount, total intangible assets	60.7		60.7		74.7
Amortization expense related to intangible assets subject to amortization	5.4	$ 5.1	16.2	$ 15.5
In-process research and development
Intangible assets:
Gross Carrying Amount, intangible assets not subject to amortization					0.6
Net Carrying Amount, intangible assets not subject to amortization					0.6
Existing technology and related patents
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	156.8		156.8		154.5
Accumulated Amortization, intangible assets subject to amortization	(109.1)		(109.1)		(95.5)
Net Carrying Amount, intangible assets subject to amortization	47.7		47.7		59.0
Customer relationships
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	18.4		18.4		18.4
Accumulated Amortization, intangible assets subject to amortization	(7.5)		(7.5)		(5.9)
Net Carrying Amount, intangible assets subject to amortization	10.9		10.9		12.5
Non compete contracts
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	1.8		1.8		1.8
Accumulated Amortization, intangible assets subject to amortization	(1.0)		(1.0)		(0.6)
Net Carrying Amount, intangible assets subject to amortization	0.8		0.8		1.2
Trade names
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	1.6		1.6		1.6
Accumulated Amortization, intangible assets subject to amortization	(0.3)		(0.3)		(0.2)
Net Carrying Amount, intangible assets subject to amortization	$ 1.3		$ 1.3		$ 1.4