Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2024	Nov. 30, 2023	May 31, 2024
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 37.7		$ 37.7		$ 32.7
Effective tax rate	20.70%	20.90%	18.30%	20.10%