Revenue Recognition - Schedule of Net Sales by Product Category (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Entity Wide Information Revenue From External Customer [Line Items]
Net Sales	$ 2,017.6	$ 1,972.4
Knees [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net Sales	713.3	700.8
Hips [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net Sales	492.0	473.8
S.E.T [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net Sales	442.3	423.5
Dental [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net Sales	107.6	107.8
Spine and CMF [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net Sales	183.1	186.3
Other [Member]
Entity Wide Information Revenue From External Customer [Line Items]
Net Sales	$ 79.3	$ 80.2