Commitments and Contingencies - Additional Information (Detail) € in Millions, $ in Millions				1 Months Ended				3 Months Ended			6 Months Ended	9 Months Ended		141 Months Ended
	Feb. 13, 2019 USD ($)	Feb. 13, 2019 NOK (kr)	Feb. 05, 2013 USD ($)	Mar. 31, 2019 USD ($)	Jan. 31, 2017 EUR (€)	Dec. 31, 2016 EUR (€)	Jul. 31, 2015 USD ($)	Sep. 30, 2019 USD ($) Patent	Sep. 30, 2018 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2019 EUR (€)	Sep. 30, 2019 USD ($) Patent	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Patent	Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Loss contingency, damages awarded, value	$ 2.3	kr 19,500,000
Deferred Prosecution Agreement [Member]
Loss Contingencies [Line Items]
Estimated charges												$ 6.5
Civil settlement payments												6.5
Criminal penalty payments outstanding												$ 17.5
DPA term												3 years
Deferred Prosecution Agreement [Member] | Maximum [Member]
Loss Contingencies [Line Items]
DPA extended term												1 year
Durom Cup Related Claims [Member]
Loss Contingencies [Line Items]
Certain claims								$ 0.0	$ 0.0			$ 9.5	$ 20.0	$ 443.0
Estimated liability outstanding								63.8				63.8		63.8
Estimated liability classified as short-term								19.5				19.5		19.5
Estimated liability classified as long-term								44.3				44.3		44.3
Biomet Metal On Metal Hip Implant Claims [Member]
Loss Contingencies [Line Items]
Estimated liability classified as short-term								$ 65.7				$ 65.7		$ 65.7
Heraeus Trade Secret Misappropriation Lawsuits [Member] | Germany [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages incurred | €					€ 125.9	€ 121.9					€ 146.7
Stryker Corporation [Member]
Loss Contingencies [Line Items]
Number of patents infringed | Patent								3				3		3
Monetary damages for lost profits			$ 70.0
Estimated charges				$ 168.0			$ 90.3			$ 70.0
Estimated loss															$ 168.0