Common stock increases in capital shares reserved for future issuance.

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Purchase price paid by employees for common stock through an employee stock purchase plan.

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Share-Based Compensation Arrangement by Share-Based Payment Award, Award Performance Period

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The maximum value that an employee can purchase of shares through the ESPP in an annual period.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Other than shares newly issued, the number of additional shares issued (for example, a stock split) or canceled (for example, to correct a share issuance), during the period under the plan.

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Purchase price of common stock expressed as a percentage of its fair value.

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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Employee Stock Plans - Additional Information (Detail) - USD ($)			3 Months Ended				6 Months Ended
	Sep. 22, 2022	Jul. 01, 2020	Oct. 31, 2022	Jul. 31, 2022	Oct. 31, 2021	Jul. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Apr. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments of tax withholdings on restricted stock							$ 22,060,000	$ 18,058,000
Shares repurchased during the period, value			$ 33,286,000	$ 44,276,000	$ 7,353,000	$ 20,091,000
Treasury Stock, Common
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased during the period (in shares)			622,500		93,385		992,367	131,081
Shares repurchased during the period, value			$ 33,100,000		$ 6,900,000		$ 55,500,000	$ 9,400,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance (in shares)			1,900,000				1,900,000
Authorized payroll deductions			15.00%				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				4,500,000
Employees stock purchased (in shares)			0		0		83,704	55,025
Employees stock purchased, price per share (in usd per share)							$ 52.22	$ 65.30
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)			400,000				400,000
Total unrecognized compensation cost related to non-vested awards			$ 22,600,000				$ 22,600,000
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)			2,072,000				2,072,000		1,980,000
Total unrecognized compensation cost related to non-vested awards			$ 88,300,000				$ 88,300,000
Expected cost recognized over weighted-average period							2 years 9 months 18 days
Shares repurchased during the period to pay for taxes (in shares)			3,969		5,729		369,433	264,807
Payments of tax withholdings on restricted stock			$ 200,000		$ 500,000		$ 22,100,000	$ 18,100,000
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