Acquisition - Purchase Price Allocation (Detail) (USD $)
In Millions, unless otherwise specified
Feb. 28, 2014
May 31, 2013
May 24, 2012
Trauma [Member]
Oct. 05, 2013
Spine Acquisition [Member]
Business Acquisition [Line Items]        
Cash       $ 2.0
Accounts receivable       16.5
Inventory     93.7 24.8
Prepaid expenses and other     2.1 11.0
Instruments     29.2 9.9
Other property, plant and equipment     7.2 2.1
Deferred tax liability       (28.0)
Other liabilities assumed       (20.7)
Liabilities assumed     (5.6)  
Intangible assets     141.5 59.4
Goodwill 3,656.8 3,600.9 11.9 73.8
Preliminary purchase price     $ 280.0 $ 150.8