XML 71 R45.htm IDEA: XBRL DOCUMENT v3.22.2.2
Deferred Compensation and Retirement Plans - Components of Net Periodic Benefits Costs (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2022
Oct. 31, 2021
Defined Benefit Plan Disclosure [Line Items]        
Expected long-term rate of return on plan assets     5.50% 6.00%
Deferred Compensation Plan        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 10,484 $ 9,749 $ 19,627 $ 18,428
Interest cost 2,437 1,038 4,824 2,057
Amortization of actuarial loss 218 542 436 1,085
Expected return on plan assets (289) (386) (578) (773)
Net periodic service credit amortization (102) (102) (203) (203)
Net periodic benefit costs $ 12,748 $ 10,841 $ 24,106 $ 20,594