Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 43,558	$ 47,655	$ 44,520
Interest cost	28,692	15,366	15,223
Expected return on plan assets	(38,144)	(41,544)	(33,115)
Prior service cost (credit)	1	5	8
Net actuarial losses recognized	17,948	16,900	30,005
Curtailment/settlement (gains) losses	(3)	16
Net Pension Cost	52,052	38,398	56,641
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	3,633	5,023	6,355
Interest cost	6,619	4,948	5,308
Expected return on plan assets	(6,581)	(7,691)	(7,286)
Prior service cost (credit)	(116)	(139)	(150)
Net actuarial losses recognized	473	465	2,377
Curtailment/settlement (gains) losses	188	7	356
Net Pension Cost	$ 4,216	$ 2,613	$ 6,960