Segment Information - Summary of Net Sales by Product Category (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue from External Customer [Line Items]
Net Sales	$ 1,182.9	$ 1,169.5	$ 2,344.4	$ 2,308.4
Knees [Member]
Revenue from External Customer [Line Items]
Net Sales	497.9	481.0	985.8	952.0
Hips [Member]
Revenue from External Customer [Line Items]
Net Sales	341.0	338.4	672.7	669.2
Extremities [Member]
Revenue from External Customer [Line Items]
Net Sales	51.5	48.6	103.6	96.4
Reconstructive [Member]
Revenue from External Customer [Line Items]
Net Sales	890.4	868.0	1,762.1	1,717.6
Dental [Member]
Revenue from External Customer [Line Items]
Net Sales	61.1	61.4	122.1	121.1
Trauma [Member]
Revenue from External Customer [Line Items]
Net Sales	78.8	74.1	158.5	156.1
Spine [Member]
Revenue from External Customer [Line Items]
Net Sales	52.2	54.2	100.5	101.9
Surgical and other [Member]
Revenue from External Customer [Line Items]
Net Sales	$ 100.4	$ 111.8	$ 201.2	$ 211.7