Leases - Other Information Related to Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2024	May 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating Leases, Operating cash flows	$ 9.3	$ 5.7
Operating Leases, ROU assets obtained in exchange for lease liabilities	$ 6.7	$ 12.1
Operating Leases, Weighted-average remaining lease term (in years)	13 years 6 months 10 days	14 years 7 months 17 days
Operating Leases, Weighted-average discount rate	3.48%	3.35%