Acquisitions - Additional Information (Detail) (USD $)	Mar. 31, 2013	Apr. 01, 2012	Mar. 31, 2013 Minimum	Mar. 31, 2013 Maximum	Jun. 22, 2012 Hotspur Technologies	May 22, 2012 Semprus BioSciences	Apr. 05, 2012 EZ-Blocker Product Line	Mar. 31, 2013 LMA International N.V.	Oct. 23, 2012 LMA International N.V.	Oct. 23, 2012 Laryngeal Mask Supraglottic	May 03, 2012 Axiom Technology Partners LLC
Business Acquisition [Line Items]
Initial payment made on acquisition					$ 15,000,000	$ 30,000,000	$ 3,300,000		$ 292,200,000	$ 19,900,000	$ 7,500,000
Working capital adjustment related to the acquisition								1,500,000
Aggregate contingent consideration paid on achievement of specified objectives	$ 41,503,000	$ 9,018,000	$ 2,000,000	$ 90,000,000