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Schedule of Long Term Debt (Details) - USD ($)
$ in Millions
Feb. 29, 2020
Jun. 01, 2019
Debt Instrument [Line Items]    
Long-term debt $ 275.0 $ 281.9
Construction-type lease 0.0 6.9
Supplier financing program 2.5 3.1
Total debt 277.5 285.0
Short-term Debt (2.5) (3.1)
Syndicated revolving line of credit, due August 2024    
Debt Instrument [Line Items]    
Long-term debt 225.0 225.0
Debt securities, due March 1, 2021    
Debt Instrument [Line Items]    
Long-term debt $ 50.0 $ 50.0