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Taxes (Details) - Schedule of earnings from continuing operations before income taxes - USD ($)
$ in Millions
12 Months Ended
May 31, 2021
May 31, 2020
May 31, 2019
Taxes (Details) - Schedule of earnings from continuing operations before income taxes [Line Items]      
Earnings (loss) from continuing operations before income taxes $ (18.2) $ (89.7) $ 26.0
United States      
Taxes (Details) - Schedule of earnings from continuing operations before income taxes [Line Items]      
Earnings (loss) from continuing operations before income taxes (45.8) (92.5) 8.7
Non-United States      
Taxes (Details) - Schedule of earnings from continuing operations before income taxes [Line Items]      
Earnings (loss) from continuing operations before income taxes $ 27.6 $ 2.8 $ 17.3