Business Combinations - Summary of Aggregate Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 10,685.1	$ 10,643.9
Cayenne Medical, CTC, CDD and MedTech [Member]
Business Acquisition [Line Items]
Current assets		64.2
Property, plant and equipment		4.5
Intangible assets		200.1
Goodwill		344.1
Other assets		7.8
Total assets acquired		620.7
Current liabilities		14.2
Long-term liabilities		106.8
Total liabilities assumed		121.0
Net assets acquired		$ 499.7