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Summary of Significant Accounting Policies - Business, Consolidation and Presentation (Details)	12 Months Ended
	May. 31, 2015 segment Country
Accounting Policies [Abstract]
Number of countries | Country	29
Number of reportable segments | segment	3

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- References

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- Definition

The number of countries in which the entity operates as of balance sheet date.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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