Note 9 - Other Intangible Assets, Net (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May. 31, 2015 |
May. 31, 2014 |
May. 31, 2013 |
|
| Note 9 - Other Intangible Assets, Net (Details) [Line Items] | |||
| Amortization of Intangible Assets | $ 54.5 | $ 53.0 | $ 50.8 |
| In Process Research and Development [Member] | |||
| Note 9 - Other Intangible Assets, Net (Details) [Line Items] | |||
| Impairment of Intangible Assets (Excluding Goodwill) | $ 0.2 | ||