Guarantor and Non-Guarantor Financial Statements - Condensed Consolidating Statements of Cash Flow (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items]    
Cash flows provided by (used in) operating activities $ 325.6 $ 273.8
Proceeds from sales/maturities of investments 19.0 5.5
Purchases of investments (19.8) (6.4)
Capital expenditures (158.8) (149.7)
Acquisitions, net of cash acquired - 2013 Spine Acquisition (148.8) 0
Acquisitions, net of cash acquired 0 (280.0)
Other (1.3) (4.1)
Net cash used in investing activities (308.9) (433.8)
Payments under senior secured credit facilities (22.6) (25.2)
Proceeds under revolvers 159.3 80.0
Payments under revolvers (63.0) (80.0)
Proceeds from senior notes due 2020 and term loans 870.5 3,396.2
Tender/retirement of senior notes due 2017 and term loans (1,091.6) (3,423.0)
Payment of fees related to refinancing activities (15.5) (77.8)
Other (39.8) (26.3)
Net cash used in financing activities (164.6) (130.9)
Effect of exchange rate changes on cash 4.7 15.9
Increase (decrease) in cash and cash equivalents (143.2) (275.0)
Cash and cash equivalents, beginning of period 355.6 492.4
Cash and cash equivalents, end of period 212.4 217.4
Biomet, Inc. [Member]
   
Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items]    
Cash flows provided by (used in) operating activities 159.2 121.8
Capital expenditures 0 0
Acquisitions, net of cash acquired - 2013 Spine Acquisition 0  
Acquisitions, net of cash acquired   0
Other 0 0
Net cash used in investing activities 0 0
Proceeds under revolvers 155.0 80.0
Payments under revolvers (55.0) (80.0)
Proceeds from senior notes due 2020 and term loans 870.5 3,396.2
Tender/retirement of senior notes due 2017 and term loans (1,091.6) (3,423.0)
Payment of fees related to refinancing activities   (77.8)
Other (38.1) (17.2)
Net cash used in financing activities (159.2) (121.8)
Effect of exchange rate changes on cash 0 0
Increase (decrease) in cash and cash equivalents 0 0
Cash and cash equivalents, beginning of period 0 0
Cash and cash equivalents, end of period 0 0
Guarantors [Member]
   
Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items]    
Cash flows provided by (used in) operating activities 236.6 198.0
Capital expenditures (91.7) (69.4)
Acquisitions, net of cash acquired - 2013 Spine Acquisition (148.8)  
Acquisitions, net of cash acquired   (277.5)
Other (1.4) (2.0)
Net cash used in investing activities (241.9) (348.9)
Proceeds under revolvers 0 0
Payments under revolvers 0 0
Proceeds from senior notes due 2020 and term loans 0 0
Tender/retirement of senior notes due 2017 and term loans 0 0
Payment of fees related to refinancing activities   0
Other 0.6 (0.1)
Net cash used in financing activities 0.6 (0.1)
Effect of exchange rate changes on cash 0 0
Increase (decrease) in cash and cash equivalents (4.7) (151.0)
Cash and cash equivalents, beginning of period 35.3 190.1
Cash and cash equivalents, end of period 30.6 39.1
Non-Guarantors [Member]
   
Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items]    
Cash flows provided by (used in) operating activities (70.2) (46.0)
Capital expenditures (67.1) (80.3)
Acquisitions, net of cash acquired - 2013 Spine Acquisition 0  
Acquisitions, net of cash acquired   (2.5)
Other 0.1 (2.1)
Net cash used in investing activities (67.0) (84.9)
Proceeds under revolvers 4.3 0
Payments under revolvers (8.0) 0
Proceeds from senior notes due 2020 and term loans 0 0
Tender/retirement of senior notes due 2017 and term loans 0 0
Payment of fees related to refinancing activities   0
Other (2.3) (9.0)
Net cash used in financing activities (6.0) (9.0)
Effect of exchange rate changes on cash 4.7 15.9
Increase (decrease) in cash and cash equivalents (138.5) (124.0)
Cash and cash equivalents, beginning of period 320.3 302.3
Cash and cash equivalents, end of period 181.8 178.3
Eliminations [Member]
   
Schedule Of Condensed Consolidating Statement Of Cash Flows [Line Items]    
Cash flows provided by (used in) operating activities 0 0
Capital expenditures 0 0
Acquisitions, net of cash acquired - 2013 Spine Acquisition 0  
Acquisitions, net of cash acquired   0
Other 0 0
Net cash used in investing activities 0 0
Proceeds under revolvers 0 0
Payments under revolvers 0 0
Proceeds from senior notes due 2020 and term loans 0 0
Tender/retirement of senior notes due 2017 and term loans 0 0
Payment of fees related to refinancing activities   0
Other 0 0
Net cash used in financing activities 0 0
Effect of exchange rate changes on cash 0 0
Increase (decrease) in cash and cash equivalents 0 0
Cash and cash equivalents, beginning of period 0 0
Cash and cash equivalents, end of period $ 0 $ 0