Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 47,655	$ 44,520	$ 39,425
Interest cost	15,366	15,223	20,415
Expected return on plan assets	(41,544)	(33,115)	(34,291)
Prior service cost (credit)	5	8	9
Net actuarial losses recognized	16,900	30,005	18,516
Curtailment/settlement losses	16
Net Pension Cost	38,398	56,641	44,074
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	5,023	6,355	5,400
Interest cost	4,948	5,308	4,842
Expected return on plan assets	(7,691)	(7,286)	(7,118)
Prior service cost (credit)	(139)	(150)	(36)
Net actuarial losses recognized	465	2,377	2,029
Curtailment/settlement losses	7	356	86
Net Pension Cost	$ 2,613	$ 6,960	$ 5,203