Goodwill and Other Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	$ 175.8		$ 175.8		$ 176.1
Accumulated Amortization, intangible assets subject to amortization	(85.9)		(85.9)		(76.2)
Net Carrying Amount, intangible assets subject to amortization	89.9		89.9		99.9
Gross Carrying Amount, total intangible assets	181.5		181.5		181.8
Net Carrying Amount, total intangible assets	95.6		95.6		105.6
Amortization expense related to intangible assets subject to amortization	4.8	5.1	10.0	10.2
In-process research and development
Intangible assets:
Gross Carrying Amount, intangible assets not subject to amortization	5.7		5.7		5.7
Net Carrying Amount, total intangible assets	5.7		5.7		5.7
Existing technology and related patents
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	156.5		156.5		157.9
Accumulated Amortization, intangible assets subject to amortization	(75.8)		(75.8)		(68.2)
Net Carrying Amount, intangible assets subject to amortization	80.7		80.7		89.7
Customer relationships
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	19.1		19.1		18.0
Accumulated Amortization, intangible assets subject to amortization	(9.9)		(9.9)		(7.8)
Net Carrying Amount, intangible assets subject to amortization	9.2		9.2		10.2
Trade names
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	0.2		0.2		0.2
Accumulated Amortization, intangible assets subject to amortization	$ (0.2)		$ (0.2)		$ (0.2)