Segment Information (Details 1) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net sales by product category
Net Sales	$ 1,137.4	$ 1,057.7	$ 2,253.0	$ 2,120.5
Knees [Member]
Net sales by product category
Net Sales	470.9	452.9	933.1	913.3
Hips [Member]
Net sales by product category
Net Sales	345.0	317.1	682.3	632.8
Extremities [Member]
Net sales by product category
Net Sales	40.7	38.2	83.6	76.6
Reconstructive implants [Member]
Net sales by product category
Net Sales	856.6	808.2	1,699.0	1,622.7
Dental [Member]
Net sales by product category
Net Sales	67.1	55.9	129.5	107.6
Trauma [Member]
Net sales by product category
Net Sales	69.1	57.8	139.2	118.2
Spine [Member]
Net sales by product category
Net Sales	56.4	57.9	113.3	117.9
Surgical and other [Member]
Net sales by product category
Net Sales	$ 88.2	$ 77.9	$ 172.0	$ 154.1