Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021	May 31, 2021
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 32.6		$ 32.6		$ 34.2
Effective tax rate	18.20%	14.40%	15.80%	11.80%