Acquisition, Quality Remediation and Other - Summary of Acquisition, Quality Remediation and Other Expenses (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Biomet merger-related
Consulting and professional fees	$ 10.0	$ 18.7
Employee termination benefits	1.8	(3.0)
Dedicated project personnel	2.2	8.7
Relocated facilities	0.7	2.8
Information technology integration	0.1	2.3
Other	1.8	7.5
Total Biomet merger-related	16.6	37.0
Other
Consulting and professional fees	63.8	50.4
Employee termination benefits	1.6	1.2
Dedicated project personnel	9.3	12.8
Relocated facilities	0.7	2.4
Certain litigation matters	5.7	7.0
Contract terminations	2.6
Information technology integration	1.2	0.5
Contingent consideration adjustments	0.5	(3.6)
Other	3.2	2.4
Total Other	88.6	73.1
Acquisition, quality remediation and other	$ 105.2	$ 110.1