Goodwill and Other Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	$ 170.1	$ 167.0		$ 170.1
Accumulated Amortization, intangible assets subject to amortization	(67.4)	(55.7)		(67.4)
Net Carrying Amount, intangible assets subject to amortization	102.7	111.3		102.7
Gross Carrying Amount, total intangible assets	175.8	172.7		175.8
Net Carrying Amount, total intangible assets	108.4	117.0		108.4
Impairment charge on definite-lived intangible assets		16.4
Amortization expense related to intangible assets subject to amortization	5.1		5.5	15.3	16.2
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	152.0	151.5		152.0
Accumulated Amortization, intangible assets subject to amortization	(58.2)	(47.6)		(58.2)
Net Carrying Amount, intangible assets subject to amortization	93.8	103.9		93.8
Customer relationships
Intangible assets:
Gross Carrying Amount, intangible assets subject to amortization	17.9	15.3		17.9
Accumulated Amortization, intangible assets subject to amortization	(9.0)	(7.9)		(9.0)
Net Carrying Amount, intangible assets subject to amortization	8.9	7.4		8.9
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)