Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Goodwill.
Balance at beginning of period			$ 98.3
Goodwill acquired during the period			1.7
Measurement period adjustments			(2.0)
Foreign currency impact			2.1
Balance at end of period	100.1		100.1
Intangible assets:
Gross Carrying Amount, intangible assets	138.5		138.5		132.6
Accumulated Amortization, intangible assets	(22.2)		(22.2)		(17.8)
Net Carrying Amount, intangible assets	116.3		116.3		114.8
Gross Carrying Amount, total intangible assets	159.8		159.8		153.9
Net Carrying Amount, total intangible assets	137.6		137.6		136.1
Amortization expense related to intangible assets subject to amortization	4.2	0.7	8.1	1.1
Existing technology and related patents
Intangible assets:
Gross Carrying Amount, intangible assets	116.4		116.4		112.0
Accumulated Amortization, intangible assets	(18.1)		(18.1)		(15.0)
Net Carrying Amount, intangible assets	98.3		98.3		97.0
Estimated useful lives, minimum			3
Estimated useful lives, maximum			10
Customer and distributor relationships
Intangible assets:
Gross Carrying Amount, intangible assets	21.7		21.7		20.2
Accumulated Amortization, intangible assets	(3.8)		(3.8)		(2.5)
Net Carrying Amount, intangible assets	17.9		17.9		17.7
Estimated useful lives, minimum			5
Estimated useful lives, maximum			10
Trade names
Intangible assets:
Gross Carrying Amount, intangible assets	0.4		0.4		0.4
Accumulated Amortization, intangible assets	(0.3)		(0.3)		(0.3)
Net Carrying Amount, intangible assets	0.1		0.1		0.1
Estimated useful lives, minimum			5
Estimated useful lives, maximum			10
In-process research and development
Intangible assets:
Gross Carrying Amount, intangible assets not subject to amortization	21.3		21.3		21.3
Net Carrying Amount, total intangible assets	$ 21.3		$ 21.3		$ 21.3