Changes in Benefits Obligations and Plan Assets, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 703,735	$ 822,073
Service cost	43,558	47,655	$ 44,520
Interest cost	28,692	15,366	15,223
Benefits paid	(44,604)	(59,795)
Plan amendments	4
Plan settlements/curtailments	(137)	(190)
Actuarial (gains)/losses	(34,075)	(121,374)
Benefit Obligation at End of Year	697,173	703,735	822,073
Balance at Beginning of Period	616,960	672,377
Actual (loss) on plan assets	(4,294)	(61,036)
Employer contributions	63,561	65,604
Benefits paid	(44,604)	(59,795)
Plan settlements/curtailments	(137)	(190)
Balance at End of Period	631,486	616,960	672,377
(Deficit)/Surplus of plan assets versus benefit obligations at end of year	(65,687)	(86,775)
Net Amount Recognized	(65,687)	(86,775)
Accumulated Benefit Obligation	598,094	610,433
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	182,534	232,028
Service cost	3,633	5,023	6,355
Interest cost	6,619	4,948	5,308
Benefits paid	(8,676)	(7,657)
Participant contributions	1,221	1,138
Plan amendments	(97)	293
Plan settlements/curtailments	(2,852)	(1,330)
Actuarial (gains)/losses	(16,004)	(34,638)
Premiums paid	(108)	(107)
Currency exchange rate changes	(7,458)	(17,164)
Benefit Obligation at End of Year	158,812	182,534	232,028
Balance at Beginning of Period	193,375	239,853
Actual (loss) on plan assets	(15,239)	(25,430)
Employer contributions	6,647	4,626
Participant contributions	1,221	1,138
Benefits paid	(8,676)	(7,657)
Premiums paid	(108)	(107)
Plan settlements/curtailments	(2,852)	(1,330)
Currency exchange rate changes	(8,248)	(17,718)
Balance at End of Period	166,120	193,375	$ 239,853
(Deficit)/Surplus of plan assets versus benefit obligations at end of year	7,308	10,841
Net Amount Recognized	7,308	10,841
Accumulated Benefit Obligation	$ 148,635	$ 172,141