Employee Stock Plans - Restricted Stock Activity (Detail) - Restricted stock shares in Thousands	9 Months Ended
	Jan. 31, 2023 $ / shares shares
Shares
Beginning balance (in shares) | shares	1,980
Granted (in shares) | shares	1,123
Vested (in shares) | shares	(1,002)
Forfeited/expired (in shares) | shares	(36)
Ending balance (in shares) | shares	2,065
Weighted- Average Grant Date Fair Value
Weighted-average, beginning balance (in usd per share) | $ / shares	$ 40.32
Weighted-average, granted (in usd per share) | $ / shares	49.11
Weighted-average, vested (in usd per share) | $ / shares	37.69
Weighted-average, forfeited/expired (in usd per share) | $ / shares	55.73
Weighted-average, ending balance (in usd per share) | $ / shares	$ 50.08