XML 154 R87.htm IDEA: XBRL DOCUMENT v3.24.1.1.u2
Retirement Plans - Pension Plan Assets/Investments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2022
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Notice period for redemption request 7 days    
Acceptable ranges within which asset allocations will fluctuate 5.00%    
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount $ 466,737 $ 488,662  
Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 1,328 1,902  
Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 297,438 306,690  
NAV      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount $ 167,971 180,070  
Equity securities:      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Target allocation percentage 30.00%    
Fixed Income Securities and Cash      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Target allocation percentage 70.00%    
US      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount $ 173,569 186,607 $ 204,455
US | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount  
US | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 5,598 6,537  
US | NAV      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 167,971 180,070  
US | Global Equity Securities: Limited Partnership      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 63,836 80,006  
US | Global Equity Securities: Limited Partnership | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount  
US | Global Equity Securities: Limited Partnership | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 5,598 6,537  
US | Global Equity Securities: Limited Partnership | NAV      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 58,238 73,469  
US | Fixed income securities: Commingled funds      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 109,733 106,601  
US | Fixed income securities: Commingled funds | NAV      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 109,733 106,601  
Non-US      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 293,168 302,055 $ 442,259
Non-US | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 1,328 1,902  
Non-US | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 291,840 300,153  
Non-US | NAV      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 0 0  
Non-US | US equities      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 22,496 48,806  
Non-US | US equities | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 0 0  
Non-US | US equities | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 22,496 48,806  
Non-US | Non-US equities      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 9,637 39,618  
Non-US | Non-US equities | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 0 0  
Non-US | Non-US equities | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 9,637 39,618  
Non-US | Balanced managed funds      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 60,959 58,036  
Non-US | Balanced managed funds | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 0 0  
Non-US | Balanced managed funds | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 60,959 58,036  
Non-US | Fixed income securities: Commingled funds      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 125,223 133,878  
Non-US | Fixed income securities: Commingled funds | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 0 0  
Non-US | Fixed income securities: Commingled funds | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 125,223 133,878  
Non-US | Real estate/other      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 480 496  
Non-US | Real estate/other | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 0 0  
Non-US | Real estate/other | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 480 496  
Non-US | Cash and cash equivalents      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 74,373 21,221  
Non-US | Cash and cash equivalents | Level 1      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount 1,328 1,902  
Non-US | Cash and cash equivalents | Level 2      
Assets, Fair Value Disclosure [Abstract]      
Defined benefit plan, plan assets, amount $ 73,045 $ 19,319