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Employee Benefit Plans (Details) - Foreign Plan - USD ($)
$ in Millions
3 Months Ended
Aug. 31, 2019
Sep. 01, 2018
Defined Benefit Plan Disclosure    
Interest cost $ 0.5 $ 0.7
Expected return on plan assets (1.0) (1.2)
Net amortization loss 0.8 0.8
Net periodic benefit cost $ 0.3 $ 0.3