Acquisitions - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Jul. 01, 2015
Kobayashi Pharmaceutical Co Ltd
Business Acquisition [Line Items]
Business acquisition, acquisition percentage	50.00%
Business acquisition, purchase consideration cash payment	$ 25.0
Non-contingent future payments for business combination	$ 68.3
Business acquisition, consideration payment period	10 years
Business acquisition, expected closing date	2015-11
Vascular Pathways Inc
Business Acquisition [Line Items]
Business acquisition, acquisition percentage		100.00%
Business acquisition, purchase consideration		$ 81.5
Business acquisition, maximum future contingent payments		15.0
Purchase price allocation at fair value, recognition of deferred tax liabilities		24.8
Purchase price allocation at fair value, recognition of deferred tax assets		9.9
Purchase price allocation at fair value, other liabilities		11.0
Purchase price allocation at fair value, goodwill		42.4
Acquisition related transaction costs		2.0
Vascular Pathways Inc | Developed technologies
Business Acquisition [Line Items]
Purchase price allocation at fair value, recognition of finite-lived intangible asset		$ 65.0
Estimated useful lives, years		12 years