Awards and Restricted Stock Units Issued under 2007 Plan and 2014 Omnibus Plan (Detail) - $ / shares	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Weighted-Average Grant-Date Fair Value
Shares exercised	$ 56.42
Shares
Shares exercised	(598,000)
2007 Plan and 2014 Omnibus Plan
Weighted-Average Grant-Date Fair Value
Beginning Balance	$ 41.37
Shares granted	93.51	$ 81.01	$ 86.93
Shares exercised	43.78
Ending Balance	$ 44.82	$ 41.37
Shares
Beginning Balance	390,000
Shares granted	25,643
Shares exercised	(32,000)
Ending Balance	384,000	390,000