Employee Stock Plans - Restricted Stock Activity (Detail) - Restricted stock - $ / shares shares in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Shares
Beginning balance (in shares)	2,063	1,980	2,370
Granted (in shares)	854	1,143	483
Vested (in shares)	(682)	(1,006)	(821)
Forfeited (in shares)	(261)	(54)	(52)
Ending balance (in shares)	1,974	2,063	1,980
Weighted- Average Grant Date Fair Value
Weighted-average, beginning balance (in dollars per share)	$ 50.12	$ 40.32	$ 34.34
Weighted-average, granted (in dollars per share)	51.32	49.12	65.05
Weighted-average, vested (in dollars per share)	40.09	37.72	43.76
Weighted-average, forfeited (in dollars per share)	52.22	52.58	34.30
Weighted-average, ending balance (in dollars per share)	$ 53.83	$ 50.12	$ 40.32