Employee Stock Plans - Additional Information (Detail) - USD ($)			3 Months Ended				6 Months Ended
	Sep. 22, 2022	Jul. 01, 2020	Oct. 31, 2023	Jul. 31, 2023	Oct. 31, 2022	Jul. 31, 2022	Oct. 31, 2023	Oct. 31, 2022	Apr. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments of tax withholdings on restricted stock							$ 10,551,000	$ 22,060,000
Shares repurchased during the period, value			$ 4,765,000	$ 14,358,000	$ 33,286,000	$ 44,276,000
Treasury Stock, Common
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased during the period (in shares)			92,500		622,500		182,500	992,367
Shares repurchased during the period, value			$ 4,400,000		$ 33,100,000		$ 8,600,000	$ 55,500,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance (in shares)			1,700,000				1,700,000
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		105,311	83,704
Employees stock purchased, price per share (in usd per share)							$ 44.59	$ 55.22
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				700,000
Total unrecognized compensation cost related to non-vested awards			$ 26,500,000				$ 26,500,000
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)			2,097,000				2,097,000		2,063,000
Total unrecognized compensation cost related to non-vested awards			$ 86,200,000				$ 86,200,000
Expected cost recognized over weighted-average period							2 years 6 months
Shares repurchased during the period to pay for taxes (in shares)			7,848		3,969		209,289	369,433
Payments of tax withholdings on restricted stock			$ 400,000		$ 200,000		$ 10,600,000	$ 22,100,000
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