Segment Information - Summary of Net Sales by Product Category (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue from External Customer [Line Items]
Net Sales	$ 1,904.0	$ 1,134.4
Knees [Member]
Revenue from External Customer [Line Items]
Net Sales	703.3	463.9
Hips [Member]
Revenue from External Customer [Line Items]
Net Sales	467.9	311.4
S.E.T [Member]
Revenue from External Customer [Line Items]
Net Sales	401.1	218.4
Dental [Member]
Revenue from External Customer [Line Items]
Net Sales	108.6	55.8
Spine and CMF [Member]
Revenue from External Customer [Line Items]
Net Sales	141.2	49.5
Other [Member]
Revenue from External Customer [Line Items]
Net Sales	$ 81.9	$ 35.4