Biomet Merger - Summary of Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Cash	$ 494.8
Accounts receivable, net	528.1
Inventory	1,237.5
Other current assets	26.4
Property, plant and equipment	783.3
Other assets	247.6
Goodwill	10,142.9	$ 9,934.2
Total assets acquired	19,398.0
Current liabilities	615.0
Long-term debt	2,740.0
Deferred taxes	4,046.6
Other long-term liabilities	56.5
Total liabilities assumed	7,458.1
Net assets acquired	11,939.9
In Process Research and Development (IPR&D) [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization	246.0
Technology [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	2,332.1
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	4,946.0
Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization	479.0
Intangible assets subject to amortization	360.0
As Reported [Member]
Business Acquisition [Line Items]
Cash		494.8
Accounts receivable, net		529.0
Inventory		1,245.7
Other current assets		26.4
Property, plant and equipment		791.4
Other assets		241.1
Goodwill		7,573.9
Total assets acquired		19,464.4
Current liabilities		628.1
Long-term debt		2,740.0
Deferred taxes		4,097.5
Other long-term liabilities		58.9
Total liabilities assumed		7,524.5
Net assets acquired		11,939.9
As Reported [Member] | In Process Research and Development (IPR&D) [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization		246.0
As Reported [Member] | Technology [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		2,492.1
As Reported [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		4,956.0
As Reported [Member] | Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization		479.0
Intangible assets subject to amortization		$ 389.0
Adjustments [Member]
Business Acquisition [Line Items]
Accounts receivable, net	(0.9)
Inventory	(8.2)
Property, plant and equipment	(8.1)
Other assets	6.5
Goodwill	143.3
Total assets acquired	(66.4)
Current liabilities	(13.1)
Deferred taxes	(50.9)
Other long-term liabilities	(2.4)
Total liabilities assumed	(66.4)
Adjustments [Member] | Technology [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	(160.0)
Adjustments [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	(10.0)
Adjustments [Member] | Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	$ (29.0)