Pension Plans - Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Pension Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 10,890	$ 11,914	$ 32,670	$ 35,742
Interest cost	7,173	3,842	21,519	11,526
Expected return on plan assets	(9,536)	(10,386)	(28,608)	(31,158)
Prior service cost (credit)		1		3
Net actuarial losses recognized	4,487	4,225	13,461	12,675
Net Periodic Benefit (Credit) Cost	13,014	9,596	39,042	28,788
Pension Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	951	1,348	2,853	4,044
Interest cost	1,728	1,282	5,184	3,846
Expected return on plan assets	(1,727)	(2,073)	(5,181)	(6,219)
Prior service cost (credit)	(27)	(38)	(81)	(114)
Net actuarial losses recognized	125	114	375	342
Net Periodic Benefit (Credit) Cost	1,050	633	3,150	1,899
Postretirement Benefits | U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	21	10	63	30
Prior service cost (credit)	(30)	(40)	(90)	(120)
Net actuarial losses recognized	11	15	33	45
Net Periodic Benefit (Credit) Cost	2	(15)	6	(45)
Postretirement Benefits | Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	287	432	861	1,296
Interest cost	368	299	1,104	897
Net actuarial losses recognized	(14)	32	(42)	96
Net Periodic Benefit (Credit) Cost	$ 641	$ 763	$ 1,923	$ 2,289