Changes in Benefits Obligations and Plan Assets, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 697,173	$ 703,735
Service cost	43,652	43,558	$ 47,655
Interest cost	35,967	28,692	15,366
Benefits paid	(40,540)	(44,604)
Plan amendments		4
Plan settlements/curtailments		(137)
Actuarial (gains) losses	(16,589)	(34,075)
Benefit Obligation at End of Year	719,663	697,173	703,735
Balance at Beginning of Period	631,486	616,960
Actual gain (loss) on plan assets	87,205	(4,294)
Employer contributions	41,928	63,561
Benefits paid	(40,540)	(44,604)
Plan settlements/curtailments		(137)
Balance at End of Period	720,079	631,486	616,960
Surplus/(Deficit)of plan assets versus benefit obligations at end of year	416	(65,687)
Net Amount Recognized	416	(65,687)
Accumulated Benefit Obligation	618,413	598,094
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	158,812	182,534
Service cost	3,534	3,633	5,023
Interest cost	7,667	6,619	4,948
Benefits paid	(8,102)	(8,676)
Participant contributions	1,149	1,221
Plan amendments	(2)	(97)
Plan settlements/curtailments	(1,090)	(2,852)
Actuarial (gains) losses	3,461	(16,004)
Premiums paid	(83)	(108)
Currency exchange rate changes	714	(7,458)
Benefit Obligation at End of Year	166,060	158,812	182,534
Balance at Beginning of Period	166,120	193,375
Actual gain (loss) on plan assets	9,973	(15,239)
Employer contributions	5,449	6,647
Participant contributions	1,149	1,221
Benefits paid	(8,102)	(8,676)
Premiums paid	(83)	(108)
Plan settlements/curtailments	(1,090)	(2,852)
Currency exchange rate changes	844	(8,248)
Balance at End of Period	174,260	166,120	$ 193,375
Surplus/(Deficit)of plan assets versus benefit obligations at end of year	8,200	7,308
Net Amount Recognized	8,200	7,308
Accumulated Benefit Obligation	$ 156,571	$ 148,635