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Property And Equipment (Narrative) (Details) - May 31, 2018 £ in Millions, $ in Millions	GBP (£)	USD ($)
Milton Keynes, England [Member] | Land and Building [Member]
Business Acquisition [Line Items]
Capital costs	£ 5.5	$ 7.2

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Capital Costs

+ References

No definition available.

+ Details

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Period Type:	instant

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- Details

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Period Type:

X

- Details

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