Employee Benefit Plans (Details) - Schedule Of Amounts Recognized In Balance Sheet - USD ($) $ in Millions	May 31, 2020	May 31, 2019
Other Postretirement Benefits [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Current liabilities	$ (1.5)	$ (1.8)
Non-current liabilities	(19.3)	(21.6)
Net funded balance	(20.8)	(23.4)
U.K. [Member] | Pension Plans [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Current liabilities	0.0	0.0
Non-current liabilities	(5.1)	(9.1)
Net funded balance	$ (5.1)	$ (9.1)