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Deferred Compensation and Retirement Plans - Total Long-Term Benefit Obligations (Detail) - USD ($) $ in Thousands | Apr. 30, 2022 | Apr. 30, 2021
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total benefit obligation |  | $ 376,091 | $ 364,793
Less: current portion of benefit obligation | [1] | (18,916) | (18,338)
Deferred compensation and other retirement plans |  | 357,175 | 346,455
Deferred Compensation and Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total benefit obligation |  | 189,608 | 178,994
Medical and Life Insurance Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total benefit obligation |  | 5,365 | 6,584
International Retirement Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total benefit obligation |  | 14,395 | 15,633
Executive Capital Accumulation Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total benefit obligation |  | $ 166,723 | $ 163,582
[1] | Current portion of benefit obligation is included in Compensation and benefits payable in the consolidated balance sheet

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