Employee Benefit Plans (Details) - Schedule of accumulated benefit obligation in excess of plan assets - Pension Plans [Member] - USD ($) $ in Millions	May 31, 2020	May 31, 2019	May 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 36.6	$ 31.8
U.K. [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligations	41.7	40.9	$ 40.0
Projected benefit obligations	41.7	40.9
Accumulated benefit obligations	41.4	40.2
Fair value of plan assets	36.6	31.8	$ 30.8
Fair value of plan assets	$ 36.6	$ 31.8