Discontinued Operations (Details3) - USD ($) $ in Millions	May 31, 2018	May 31, 2017
Current Assets
Current assets of discontinued operations	$ 0.0	$ 0.4
Current Liabilities
Current liabilities of discontinued operations	$ 0.0	$ 0.5

Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant