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Taxes (Details) - Schedule of earnings from continuing operations before income taxes - USD ($) $ in Millions | 12 Months Ended
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May 31, 2016 | May 31, 2015 | May 31, 2014
Taxes (Details) - Schedule of earnings from continuing operations before income taxes [Line Items] |  |  |
Earnings (loss) from continuing operations before income taxes | $ 68.7 | $ 29.9 | $ (2.3)
United States [Member] |  |  |
Taxes (Details) - Schedule of earnings from continuing operations before income taxes [Line Items] |  |  |
Earnings (loss) from continuing operations before income taxes | 62.1 | 27.4 | (8.7)
Non-United States [Member] |  |  |
Taxes (Details) - Schedule of earnings from continuing operations before income taxes [Line Items] |  |  |
Earnings (loss) from continuing operations before income taxes | $ 6.6 | $ 2.5 | $ 6.4

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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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