Other Accrued Expenses - Schedule of accrued expenses (Details) - USD ($) $ in Millions	Feb. 28, 2021	May 31, 2020	Feb. 29, 2020
Schedule of accrued expenses [Abstract]
Accrued payroll, payroll taxes and benefits	$ 37.5	$ 38.8	$ 39.6
Accrued bonus and commissions	13.3	12.1	18.2
Returns liability	51.6	43.5	40.6
Accrued other taxes	21.4	22.9	24.6
Accrued advertising and promotions	13.1	9.9	11.0
Other accrued expenses	40.7	34.3	36.9
Total accrued expenses	$ 177.6	$ 161.5	$ 170.9