Segment Data - Summary of Net Sales by Product Category (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue from External Customer [Line Items]
Net Sales	$ 2,013.1	$ 1,832.8	$ 1,934.0	$ 1,904.0	$ 1,933.6	$ 1,762.2	$ 1,167.6	$ 1,134.4	$ 7,683.9	$ 5,997.8	$ 4,673.3
Knees [Member]
Revenue from External Customer [Line Items]
Net Sales									2,751.9	2,276.8	1,895.2
Hips [Member]
Revenue from External Customer [Line Items]
Net Sales									1,867.9	1,533.0	1,326.4
S.E.T [Member]
Revenue from External Customer [Line Items]
Net Sales									1,645.4	1,214.6	863.2
Dental [Member]
Revenue from External Customer [Line Items]
Net Sales									427.9	335.7	242.8
Spine and CMF [Member]
Revenue from External Customer [Line Items]
Net Sales									662.0	404.4	207.2
Other [Member]
Revenue from External Customer [Line Items]
Net Sales									$ 328.8	$ 233.3	$ 138.5