Employee Benefit Plans (Details) - Foreign Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Dec. 01, 2018	Nov. 30, 2019	Dec. 01, 2018
Defined Benefit Plan Disclosure
Interest cost	$ 0.6	$ 0.7	$ 1.2	$ 1.4
Expected return on plan assets	(1.1)	(1.1)	(2.2)	(2.1)
Net amortization loss	0.9	0.7	1.7	1.3
Net periodic benefit cost	$ 0.4	$ 0.3	$ 0.7	$ 0.6