Segment Information - Summary of Net Sales by Product Category (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue from External Customer [Line Items]
Net Sales	$ 1,169.5	$ 1,125.0	$ 2,308.4	$ 2,265.7
Knees [Member]
Revenue from External Customer [Line Items]
Net Sales	481.0	464.6	952.0	939.2
Hips [Member]
Revenue from External Customer [Line Items]
Net Sales	338.4	340.0	669.2	684.5
Extremities [Member]
Revenue from External Customer [Line Items]
Net Sales	48.6	42.5	96.4	87.3
Reconstructive Implants [Member]
Revenue from External Customer [Line Items]
Net Sales	868.0	847.1	1,717.6	1,711.0
Dental [Member]
Revenue from External Customer [Line Items]
Net Sales	61.4	61.5	121.1	121.7
Trauma [Member]
Revenue from External Customer [Line Items]
Net Sales	74.1	73.9	156.1	149.4
Spine [Member]
Revenue from External Customer [Line Items]
Net Sales	54.2	52.4	101.9	105.6
Surgical and other [Member]
Revenue from External Customer [Line Items]
Net Sales	$ 111.8	$ 90.1	$ 211.7	$ 178.0