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Investments (Tables) | 3 Months Ended
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Aug. 31, 2013
Equity Method And Cost Method Investments [Abstract] |
Schedule Of Cost And Equity Method Investments [Table Text Block] | The following table summarizes the Company’s investmentsas of the dates indicated:
|  | August 31, 2013 |  |  | May 31, 2013 |  |  | August 31, 2012 |
Cost method investments: |  |  |  |  |  |  |  |  |  |  |  |
UK - based |  | $ | 4.7 |  |  | $ | 5.0 |  |  | $ | 5.5 |
Total cost method investments |  | $ | 4.7 |  |  | $ | 5.0 |  |  | $ | 5.5 |
Equity method investments: |  |  |  |  |  |  |  |  |  |  |  |
UK - based |  | $ | 16.2 |  |  | $ | 14.6 |  |  | $ | 15.7 |
Other |  |  | 1.0 |  |  |  | — |  |  |  | — |
Total equity method investments |  | $ | 17.2 |  |  | $ | 14.6 |  |  | $ | 15.7 |
Total |  | $ | 21.9 |  |  | $ | 19.6 |  |  | $ | 21.2 |

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- Definition Tabular disclosure of equity method investments in common stock. The disclosure may include: (a) the name of each investee or group of investments for which combined disclosure is appropriate, (2) the percentage ownership of common stock, (3) the difference, if any, between the carrying amount of an investment and the value of the underlying equity in the net assets and the accounting treatment of difference, if any, and (4) the aggregate value of each identified investment based on its quoted market price, if available. Also includes, A tabular disclosure of (a) the aggregate carrying amount of all cost-method investments; (b) the aggregate carrying amount of cost-method investments that the investor did not evaluate for impairment for cost-method investments. + References No definition available. + Details
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