v3.26.3
Pension Plans - Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Pension Benefits | U.S. Plans    
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost $ 10,806 $ 10,863
Interest cost 9,861 9,484
Expected return on plan assets (14,899) (13,326)
Prior service cost (credit)   1
Net actuarial losses (gains) recognized 2 1,448
Net Periodic Benefit Cost 5,770 8,470
Pension Benefits | Non-U.S. Plans    
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 1,489 1,467
Interest cost 2,267 2,028
Expected return on plan assets (2,718) (2,506)
Prior service cost (credit) (22) (25)
Net actuarial losses (gains) recognized 162 323
Net Periodic Benefit Cost 1,178 1,287
Postretirement Benefits | U.S. Plans    
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]    
Interest cost 11 12
Net actuarial losses (gains) recognized (27) 9
Net Periodic Benefit Cost (16) 21
Postretirement Benefits | Non-U.S. Plans    
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 224 234
Interest cost 280 272
Net actuarial losses (gains) recognized (246) (256)
Net Periodic Benefit Cost $ 258 $ 250