Biomet Merger - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 2,887.2
Accumulated impairment losses	(373.0)
Goodwill, net of accumulated impairment losses, Beginning Balance	2,514.2
Biomet merger	5,253.9
Currency translation	(88.6)
Goodwill, Ending Balance	8,052.5
Accumulated impairment losses	(373.0)
Goodwill, net of accumulated impairment losses, Ending Balance	7,679.5
Americas [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,666.2
Accumulated impairment losses	(373.0)
Goodwill, net of accumulated impairment losses, Beginning Balance	1,293.2
Currency translation	(8.9)
Goodwill, Ending Balance	1,657.3
Accumulated impairment losses	(373.0)
Goodwill, net of accumulated impairment losses, Ending Balance	1,284.3
EMEA [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,067.7
Goodwill, net of accumulated impairment losses, Beginning Balance	1,067.7
Currency translation	(72.2)
Goodwill, Ending Balance	995.5
Goodwill, net of accumulated impairment losses, Ending Balance	995.5
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	153.3
Goodwill, net of accumulated impairment losses, Beginning Balance	153.3
Currency translation	(7.5)
Goodwill, Ending Balance	145.8
Goodwill, net of accumulated impairment losses, Ending Balance	145.8
Unallocated [Member]
Goodwill [Line Items]
Biomet merger	5,253.9
Goodwill, Ending Balance	5,253.9
Goodwill, net of accumulated impairment losses, Ending Balance	$ 5,253.9