Share-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Number of Stock Options Outstanding
Balance at beginning of period (in shares)	36,338	38,487
Options granted (in shares)	571	6,327
Options exercised (in shares)	(1,332)	(4,651)
Options cancelled (in shares)	(881)	(3,825)
Balance at end of period (in shares)	34,696	36,338	38,487
Vested and exercisable at end of period (in shares)	21,895
Vested and expected to vest at end of period (in shares)	34,844
Weighted Average Exercise Price
Balance at beginning of period (in dollars per share)	$ 12.44	$ 6.39
Options granted (in dollars per share)	15.30	45.41
Options exercised (in dollars per share)	20.60	4.61
Options cancelled (in dollars per share)	15.36	15.29
Balance at end of period (in dollars per share)	12.75	$ 12.44	$ 6.39
Vested and exercisable at end of period (in dollars per share)	8.95
Vested and expected to vest at end of period (in dollars per share)	$ 12.75
Weighted Average Remaining Contractual Life (years)
Balance at beginning of period (in years)	6 years 5 months 12 days	7 years 4 months 2 days	7 years 11 months 23 days
Balance at end of period (in years)	6 years 5 months 12 days	7 years 4 months 2 days	7 years 11 months 23 days
Vested and exercisable at end of period (in years)	5 years 10 months 20 days
Vested and expected to vest at end of period (in years)	6 years 5 months 12 days
Aggregate Intrinsic Value
Balance at beginning of period	$ 175,907	$ 165,436	$ 2,304,714
Balance at end of period	175,907	$ 165,436	$ 2,304,714
Vested and exercisable at end of period	194,206
Vested and expected to vest at end of period	$ 176,658