v3.26.1
Pension Plans - Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - Pension Benefits - USD ($)
$ in Thousands
 12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
U.S. Plans      
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 43,453 $ 43,217 $ 43,652
Interest cost 37,937 39,180 35,967
Expected return on plan assets (53,305) (48,069) (42,072)
Prior service cost (credit) 2 2 2
Net actuarial losses recognized 5,794 8,613 16,822
Curtailment/settlement (gains) losses   0  
Net Pension Cost 33,881 42,943 54,371
Non-U.S. Plans      
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 5,911 4,427 3,534
Interest cost 8,387 7,836 7,667
Expected return on plan assets (10,063) (9,490) (9,588)
Prior service cost (credit) (106) 159 (127)
Net actuarial losses recognized 1,253 1,189 833
Curtailment/settlement (gains) losses (21) 7 (50)
Net Pension Cost $ 5,361 $ 4,128 $ 2,269