Acquisition - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended 3 Months Ended 9 Months Ended
Oct. 05, 2013
Spine Acquisition [Member]
Feb. 28, 2014
Spine Acquisition [Member]
Feb. 28, 2014
Spine Acquisition [Member]
Feb. 28, 2014
Spine Acquisition [Member]
Selling, General and Administrative Expenses [Member]
Feb. 28, 2014
Spine Acquisition [Member]
Selling, General and Administrative Expenses [Member]
May 24, 2012
Trauma [Member]
Feb. 28, 2014
Trauma [Member]
Selling, General and Administrative Expenses [Member]
Feb. 28, 2014
Trauma [Member]
Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]                
Aggregate purchase price $ 150.8         $ 280.0    
Acquisition-related costs   $ 10.4 $ 14.5 $ 10.4 $ 14.5   $ 1.1 $ 10.3