Segment Information - Summary of Net Sales by Product Category (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue from External Customer [Line Items]
Net Sales	$ 1,977.3	$ 1,904.0
Knees [Member]
Revenue from External Customer [Line Items]
Net Sales	701.8	703.2
Hips [Member]
Revenue from External Customer [Line Items]
Net Sales	475.7	467.9
S.E.T [Member]
Revenue from External Customer [Line Items]
Net Sales	425.1	401.0
Dental [Member]
Revenue from External Customer [Line Items]
Net Sales	107.8	108.6
Spine and CMF [Member]
Revenue from External Customer [Line Items]
Net Sales	186.3	141.2
Other [Member]
Revenue from External Customer [Line Items]
Net Sales	$ 80.6	$ 82.1