Commitments and Contingencies - Additional Information (Detail)		1 Months Ended	3 Months Ended	12 Months Ended			120 Months Ended
	Feb. 05, 2013 USD ($)	Jul. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2017 USD ($) Patent	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($) Patent	Dec. 02, 2016 USD ($)	Jun. 13, 2016 USD ($)	Jun. 06, 2016 USD ($)	Mar. 01, 2013 USD ($)	Jun. 10, 2011 USD ($)
Loss Contingencies [Line Items]
Certain claims				$ 10,300,000		$ 7,700,000
Compensatory damages awarded				$ 27,600,000
Percentage of fault apportioned to plaintiffs				30.00%
Percentage of fault apportioned to company				34.00%
Percentage of fault apportioned to unrelated third party				36.00%
Verdict in full and entered judgment												$ 20,300,000
Compensatory damages vacated										$ 27,600,000	$ 27,600,000
Verdict amount remitted								$ 21,500,000
Molded verdict amount remitted								$ 15,800,000
Estimated charges				$ 15,800,000
Deferred Prosecution Agreement [Member]
Loss Contingencies [Line Items]
Estimated charges				6,500,000
Civil settlement payments				6,500,000
Criminal penalty payments outstanding				$ 17,500,000
DPA term				3 years
Maximum [Member] | Deferred Prosecution Agreement [Member]
Loss Contingencies [Line Items]
DPA extended term				1 year
Durom Cup Related Claims [Member]
Loss Contingencies [Line Items]
Certain claims				$ 10,300,000	$ 0	$ 7,700,000	$ 489,700,000
Estimated liability outstanding				199,400,000			199,400,000
Estimated liability classified as short-term				78,000,000			78,000,000
Estimated liability classified as long-term				121,400,000			121,400,000
Biomet Metal On Metal Hip Implant Claims [Member]
Loss Contingencies [Line Items]
Estimated liability classified as short-term				$ 36,000,000			$ 36,000,000
Stryker Corporation [Member]
Loss Contingencies [Line Items]
Estimated charges		$ 90,300,000	$ 70,000,000
Number of patents infringed | Patent				3			3
Monetary damages for lost profits	$ 70,000,000
Stryker Corporation [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Estimated charges									$ 165,000,000