Pension Plans - Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Pension Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 10,804	$ 10,913
Interest cost	9,795	8,992
Expected return on plan assets	(12,017)	(10,518)
Prior service cost (credit)	1	1
Net actuarial (gains) losses recognized	2,153	4,205
Net Periodic Benefit Cost	10,736	13,593
Pension Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1,120	887
Interest cost	1,963	1,935
Expected return on plan assets	(2,376)	(2,400)
Prior service cost (credit)	(32)	(31)
Net actuarial (gains) losses recognized	294	209
Net Periodic Benefit Cost	969	600
Postretirement Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	21	22
Net actuarial (gains) losses recognized	(6)	(4)
Net Periodic Benefit Cost	15	18
Postretirement Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	425	569
Interest cost	318	390
Net actuarial (gains) losses recognized	(140)	(12)
Net Periodic Benefit Cost	$ 603	$ 947