Commitments and Contingencies - Additional Information (Detail) € in Millions		1 Months Ended				3 Months Ended			9 Months Ended		129 Months Ended
	Feb. 05, 2013 USD ($)	Sep. 30, 2018 USD ($) Patent	Jan. 31, 2017 EUR (€)	Dec. 31, 2016 EUR (€)	Jul. 31, 2015 USD ($)	Sep. 30, 2018 USD ($) Patent	Sep. 30, 2017 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2018 USD ($) Patent	Sep. 30, 2017 USD ($)	Sep. 30, 2018 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]
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 between PCI and us												$ 15,800,000
Legal settlement payments		$ 15,800,000
Deferred Prosecution Agreement [Member]
Loss Contingencies [Line Items]
Legal settlement payments									$ 6,500,000
Estimated charges									6,500,000
Criminal penalty payments outstanding									$ 17,500,000
DPA term									3 years
Durom Cup Related Claims [Member]
Loss Contingencies [Line Items]
Certain claims							$ 0			$ 0	$ 469,700,000
Estimated liability outstanding		112,300,000				$ 112,300,000			$ 112,300,000		112,300,000
Estimated liability classified as short-term		48,900,000				48,900,000			48,900,000		48,900,000
Estimated liability classified as long-term		63,400,000				63,400,000			63,400,000		63,400,000
Biomet Metal On Metal Hip Implant Claims [Member]
Loss Contingencies [Line Items]
Estimated liability classified as short-term		$ 62,100,000				$ 62,100,000			$ 62,100,000		$ 62,100,000
Heraeus Trade Secret Misappropriation Lawsuits [Member] | Germany [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages incurred | €			€ 125.9	€ 121.9
Stryker Corporation [Member]
Loss Contingencies [Line Items]
Number of patents infringed | Patent		3				3			3		3
Monetary damages for lost profits	$ 70,000,000
Estimated charges					$ 90,300,000			$ 70,000,000
Stryker Corporation [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Estimated charges													$ 170,000,000
Selling, General and Administrative Expense [Member]
Loss Contingencies [Line Items]
Gain recognized for claims settlement						$ 0			$ 20,000,000