Acquisitions (Narrative) (Details) In Millions, unless otherwise specified	1 Months Ended					12 Months Ended								1 Months Ended				20 Months Ended
	Jun. 30, 2011 USD ($)	Nov. 30, 2009 USD ($)	Oct. 31, 2008 USD ($)	Oct. 31, 2008 AUD	Aug. 31, 2008	Dec. 31, 2011 USD ($)	Dec. 31, 2011 AUD	Dec. 31, 2010 USD ($)	Dec. 31, 2010 AUD	May 31, 2010 Welch [Member] USD ($)	Sep. 30, 2010 Culley [Member] USD ($)	Sep. 30, 2010 Culley [Member] AUD	Sep. 23, 2011 Ascension Orthopedics, Inc. Acquisition [Member] USD ($)	Nov. 30, 2009 Integra Neurosciences Pty Ltd. [Member] AUD	Oct. 31, 2008 Integra Neurosciences Pty Ltd. [Member] USD ($)	Oct. 31, 2008 Integra Neurosciences Pty Ltd. [Member] AUD	May 23, 2011 SeaSpine Inc. Acquisition [Member] USD ($)	Jun. 30, 2011 Theken [Member] USD ($)	Aug. 31, 2008 Theken [Member] USD ($)
Acquisitions [Line Items]
Period of revenue performance					2
Term of performance after acquisition, in years			3	3
Company acquired in cash										$ 2.4	$ 1.6	1.7	$ 66.5		$ 4.0	6.0	$ 89.0		$ 75.0
Working capital and indemnification holdback																	7.4
Working capital adjustment reduced the purchase price						0.6
Acquisitions expenses and working capital adjustments															0.3
Maximum future payments based on performance																			125.0
Acquisition expenses																			2.4
Working capital adjustments due to acquisition										0.2									3.9
Year 1 revenue performance obligation		52.0
Business acquisition contingent consideration cash payment		0.9	2.1	3.1		1.0	1.0	1.0	1.0					1.0
Accrued additional for disputed settlement amount	4.6																	4.6
Nonrecurring expenses for acquisition costs						$ 4.3