Commitments and Contingencies - Additional Information (Detail)	1 Months Ended		3 Months Ended		9 Months Ended		93 Months Ended
	Jul. 31, 2015 USD ($)	Dec. 31, 2008 EUR (€)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Patents	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Patents	Oct. 19, 2015 USD ($)	Mar. 01, 2013 USD ($)	Jun. 10, 2011 USD ($)
Loss Contingencies [Line Items]
Certain claims				$ (300,000)	$ 7,700,000	$ 21,500,000
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
Durom Cup Related Claims [Member]
Loss Contingencies [Line Items]
Certain claims related expense					$ 21,500,000		$ 479,400,000
Certain claims					7,700,000
Estimated liability outstanding					322,900,000		322,900,000
Estimated liability classified as short-term					50,000,000		50,000,000
Estimated liability classified as long-term					272,900,000		272,900,000
Durom Cup Related Claims [Member] | Other Assets [Member]
Loss Contingencies [Line Items]
Estimated insurance recoveries					95,300,000		95,300,000
Heraeus Trade Secret Misappropriation Lawsuits [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages incurred | €		€ 30,000,000
Biomet Metal On Metal Hip Implant Claims [Member]
Loss Contingencies [Line Items]
Estimated liability classified as short-term					$ 39,300,000		$ 39,300,000
Stryker Corporation [Member]
Loss Contingencies [Line Items]
Number of patents infringed | Patents					3		3
Monetary damages for lost profits					$ 70,000,000
Estimated charges	$ 90,300,000		$ 70,000,000
Stryker Corporation [Member] | Maximum [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Estimated charges								$ 140,000,000