Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Pension Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 10,890	$ 11,914
Interest cost	7,173	3,842
Expected return on plan assets	(9,536)	(10,386)
Prior service cost (credit)		1
Net actuarial losses recognized	4,487	4,225
Net Periodic Benefit (Credit) Cost	13,014	9,596
Pension Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	951	1,348
Interest cost	1,728	1,282
Expected return on plan assets	(1,727)	(2,073)
Prior service cost (credit)	(27)	(38)
Net actuarial losses recognized	125	114
Net Periodic Benefit (Credit) Cost	1,050	633
Postretirement Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	21	10
Prior service cost (credit)	(30)	(40)
Net actuarial losses recognized	11	15
Net Periodic Benefit (Credit) Cost	2	(15)
Postretirement Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	287	432
Interest cost	368	299
Net actuarial losses recognized	(14)	32
Net Periodic Benefit (Credit) Cost	$ 641	$ 763