Pension Plans - Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2023	Aug. 31, 2022
Pension Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 10,913	$ 10,890
Interest cost	8,992	7,173
Expected return on plan assets	(10,518)	(9,536)
Prior service cost (credit)	1
Net actuarial (gains) losses recognized	4,205	4,487
Net Periodic Benefit Cost	13,593	13,014
Pension Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	887	951
Interest cost	1,935	1,728
Expected return on plan assets	(2,400)	(1,727)
Prior service cost (credit)	(31)	(27)
Net actuarial (gains) losses recognized	209	125
Net Periodic Benefit Cost	600	1,050
Postretirement Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	22	21
Prior service cost (credit)		(30)
Net actuarial (gains) losses recognized	(4)	11
Net Periodic Benefit Cost	18	2
Postretirement Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	569	287
Interest cost	390	368
Net actuarial (gains) losses recognized	(12)	(14)
Net Periodic Benefit Cost	$ 947	$ 641