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Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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Acquisitions (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended							9 Months Ended
	Sep. 25, 2011	Sep. 25, 2011 Purchased Technology [Member] VasoNova Inc., [Member]	Sep. 25, 2011 Trade Names [Member] VasoNova Inc., [Member]	Mar. 31, 2011 VasoNova Inc., [Member]	Jan. 10, 2011 VasoNova Inc., [Member]	Jan. 10, 2011 VasoNova Inc., [Member] Maximum [Member]	Jan. 10, 2011 VasoNova Inc., [Member] Minimum [Member]	Sep. 25, 2011 Minimum [Member]
Business Acquisition [Line Items]
Outstanding equity acquired, percentage					100.00%
Payment to the former security holders				$ 6.0	$ 24.9
Additional agreed contingent payments upon the achievement of certain regulatory and sales targets						30.0	15.0
Number Of Installments For Contingent Payment								3
Sales target period	3
Number Of Installments Subject To Regulatory Approval	2
Estimated fair value of the consideration					40.3
Estimated fair value of contingent consideration to be paid to former security holders					15.4
Estimated fair values of intangible assets acquired		$ 26.8	$ 2.8
Useful life of intangible assets acquired, years		15	10