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Employee Stock Plans - Additional Information (Detail) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 22, 2022 | Jul. 01, 2020 | Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Payments of tax withholdings on restricted stock |  |  | $ 10,732,000 | $ 22,232,000 | $ 18,532,000 |
Shares repurchased during the period, value |  |  | $ 63,219,000 | $ 116,139,000 | $ 117,301,000 |
Treasury Stock, Common |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares repurchased during the period (in shares) |  |  | 930,000 | 1,709,867 | 1,470,983 |
Shares repurchased during the period, value |  |  | $ 52,500,000 | $ 93,900,000 | $ 98,800,000 |
ESPP |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares available for future issuance (in shares) |  |  | 1,600,000 |  |  |
Authorized payroll deductions |  |  | 15.00% |  |  |
Increase in the additional number of total shares that may be purchased (in shares) |  |  | 1,500,000 |  |  |
Authorized payroll deductions, value |  |  | $ 25,000 |  |  |
Maximum number of shares reserved for issuance (in shares) |  |  | 4,500,000 |  |  |
Employees stock purchased (in shares) |  |  | 173,671 | 154,720 | 103,826 |
Employees stock purchased, average price per share (in dollars per share) |  |  | $ 48.06 | $ 49.16 | $ 66.64 |
ESPP | Minimum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Fair market price of common stock |  | 85.00% |  |  |  |
ESPP | Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Fair market price of common stock |  | 100.00% |  |  |  |
Time Based Restricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  | 4 years |  |  |
Market Based Restricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  | 3 years |  |  |
Performance period |  |  | 3 years |  |  |
Shares outstanding (in shares) |  |  | 700,000 |  |  |
Total unrecognized compensation cost related to non-vested awards |  |  | $ 18,900,000 |  |  |
Restricted stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares outstanding (in shares) |  |  | 1,974,000 | 2,063,000 | 1,980,000 | 2,370,000
Total unrecognized compensation cost related to non-vested awards |  |  | $ 61,000,000 |  |  |
Expected cost recognized over weighted-average period |  |  | 2 years 2 months 12 days |  |  |
Shares repurchased during the period to pay for taxes (in shares) |  |  | 212,204 | 372,556 |  |
Payments of tax withholdings on restricted stock |  |  | $ 10,700,000 | $ 22,200,000 |  |
Stock Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common stock available for stock-based awards (in shares) | 1,700,000 |  |  |  |  |
Shares available for future issuance (in shares) | 2,248,284 |  |  |  |  |
Vesting period | 1 year |  |  |  |  |

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