Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 43,652	$ 43,558	$ 47,655
Interest cost	35,967	28,692	15,366
Expected return on plan assets	(42,072)	(38,144)	(41,544)
Prior service cost (credit)	2	1	5
Net actuarial losses recognized	16,822	17,948	16,900
Curtailment/settlement (gains) losses		(3)	16
Net Pension Cost	54,371	52,052	38,398
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	3,534	3,633	5,023
Interest cost	7,667	6,619	4,948
Expected return on plan assets	(9,588)	(6,581)	(7,691)
Prior service cost (credit)	(127)	(116)	(139)
Net actuarial losses recognized	833	473	465
Curtailment/settlement (gains) losses	(50)	188	7
Net Pension Cost	$ 2,269	$ 4,216	$ 2,613