Business Combinations - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Jul. 13, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 10,643.9		$ 9,934.2	$ 2,514.2
In Process Research and Development (IPR&D) [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization	209.0
Biomet [Member]
Business Acquisition [Line Items]
Cash	494.8
Accounts receivable, net	527.9
Inventory	1,224.1
Other current assets	25.4
Property, plant and equipment	775.3
Other assets	42.6
Goodwill	7,433.2
Total assets acquired	18,864.4
Current liabilities	584.0
Long-term debt	2,740.0
Deferred taxes	3,497.6
Other long-term liabilities	102.9
Total liabilities assumed	6,924.5
Net assets acquired	11,939.9
Biomet [Member] | In Process Research and Development (IPR&D) [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization	209.0
Biomet [Member] | Technology [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	2,332.1
Biomet [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization	4,961.0
Biomet [Member] | Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization	479.0
Intangible assets subject to amortization	$ 360.0
LDR Holding Corporation [Member]
Business Acquisition [Line Items]
Cash		$ 92.8
Accounts receivable, net		31.2
Inventory		99.6
Other current assets		5.6
Property, plant and equipment		24.7
Other assets		76.8
Goodwill		482.4
Total assets acquired		1,456.1
Current liabilities		75.9
Long-term debt		0.5
Deferred taxes		265.5
Other long-term liabilities		0.3
Total liabilities assumed		342.2
Net assets acquired		1,113.9
LDR Holding Corporation [Member] | Initial [Member]
Business Acquisition [Line Items]
Cash		92.8
Accounts receivable, net		31.2
Inventory		86.5
Other current assets		5.6
Property, plant and equipment		24.7
Other assets		17.4
Goodwill		527.1
Total assets acquired		1,427.3
Current liabilities		53.3
Long-term debt		0.5
Deferred taxes		259.1
Other long-term liabilities		0.5
Total liabilities assumed		313.4
Net assets acquired		1,113.9
LDR Holding Corporation [Member] | Adjustments [Member]
Business Acquisition [Line Items]
Inventory		13.1
Other assets		59.4
Goodwill		(44.7)
Total assets acquired		28.8
Current liabilities		22.6
Deferred taxes		6.4
Other long-term liabilities		(0.2)
Total liabilities assumed		28.8
LDR Holding Corporation [Member] | In Process Research and Development (IPR&D) [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization		2.0
LDR Holding Corporation [Member] | In Process Research and Development (IPR&D) [Member] | Initial [Member]
Business Acquisition [Line Items]
Intangible assets not subject to amortization		2.0
LDR Holding Corporation [Member] | Technology [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		452.0
LDR Holding Corporation [Member] | Technology [Member] | Initial [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		431.0
LDR Holding Corporation [Member] | Technology [Member] | Adjustments [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		21.0
LDR Holding Corporation [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		118.0
LDR Holding Corporation [Member] | Customer Relationships [Member] | Initial [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		132.0
LDR Holding Corporation [Member] | Customer Relationships [Member] | Adjustments [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		(14.0)
LDR Holding Corporation [Member] | Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		71.0
LDR Holding Corporation [Member] | Trademarks and Trade Names [Member] | Initial [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		77.0
LDR Holding Corporation [Member] | Trademarks and Trade Names [Member] | Adjustments [Member]
Business Acquisition [Line Items]
Intangible assets subject to amortization		$ (6.0)