Segment Reporting - Net Sales by Product Category (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 28, 2014
reportable_segment
Feb. 28, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]        
Number of reportable segments     1  
Net sales by product:        
Net sales $ 822.5 $ 771.5 [1],[2] $ 2,378.9 $ 2,269.0 [1],[2]
Knees [Member]
       
Net sales by product:        
Net sales 254.2 234.7 [1] 743.3 699.8 [1]
Hips [Member]
       
Net sales by product:        
Net sales 162.9 158.5 [1] 480.3 469.5 [1]
S.E.T. [Member]
       
Net sales by product:        
Net sales 169.0 161.4 [1] 478.8 440.9 [1]
Spine, Bone Healing and Microfixation [Member]
       
Net sales by product:        
Net sales 115.9 99.6 [1] 322.4 311.0 [1]
Dental [Member]
       
Net sales by product:        
Net sales 64.4 64.4 [1] 188.8 188.5 [1]
Cement, Biologics and Other [Member]
       
Net sales by product:        
Net sales $ 56.1 $ 52.9 [1] $ 165.3 $ 159.3 [1]
[1] Certain amounts have been adjusted to conform to the current presentation. The current presentation aligns with how the Company presently manages and markets its products.
[2] Certain amounts have been reclassified to conform to the current presentation. See Note 1 to the condensed consolidated financial statements for a description of the reclassification.