Changes in Benefits Obligations and Plan Assets, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 822,073	$ 762,739
Service cost	47,655	44,520	$ 39,425
Interest cost	15,366	15,223	20,415
Benefits paid	(59,795)	(64,139)
Plan settlements/curtailments	(190)
Actuarial (gains)/losses	(121,374)	63,730
Benefit Obligation at End of Year	703,735	822,073	762,739
Balance at Beginning of Period	672,377	516,550
Actual (loss) return on plan assets	(61,036)	157,702
Employer contributions	65,604	62,264
Benefits paid	(59,795)	(64,139)
Plan settlements/curtailments	(190)
Balance at End of Period	616,960	672,377	516,550
(Deficit)/Surplus of plan assets versus benefit obligations at end of year	(86,775)	(149,696)
Net Amount Recognized	(86,775)	(149,696)
Accumulated Benefit Obligation	610,433	702,315
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	232,028	210,278
Service cost	5,023	6,355	5,400
Interest cost	4,948	5,308	4,842
Benefits paid	(7,657)	(9,248)
Participant contributions	1,138	1,140
Plan amendments	293
Plan settlements/curtailments	(1,330)	(2,342)
Actuarial (gains)/losses	(34,638)	(7,774)
Premiums paid	(107)	(103)
Currency exchange rate changes	(17,164)	28,414
Benefit Obligation at End of Year	182,534	232,028	210,278
Balance at Beginning of Period	239,853	194,874
Actual (loss) return on plan assets	(25,430)	21,350
Employer contributions	4,626	7,119
Participant contributions	1,138	1,140
Benefits paid	(7,657)	(9,248)
Premiums paid	(107)	(103)
Plan settlements/curtailments	(1,330)	(2,327)
Currency exchange rate changes	(17,718)	27,048
Balance at End of Period	193,375	239,853	$ 194,874
(Deficit)/Surplus of plan assets versus benefit obligations at end of year	10,841	7,825
Net Amount Recognized	10,841	7,825
Accumulated Benefit Obligation	$ 172,141	$ 217,012