Stock-Based Compensation - Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Jan. 31, 2025 USD ($) $ / shares shares	Apr. 30, 2024 USD ($) $ / shares shares
Number of Stock Options Outstanding
Balance at beginning of period (in shares) | shares	31,328
Options granted (in shares) | shares	1,187
Options exercised (in shares) | shares	(3,169)
Options cancelled (in shares) | shares	(540)
Balance at end of period (in shares) | shares	28,806	31,328
Vested and exercisable at end of period (in shares) | shares	23,724
Vested and expected to vest at end of period (in shares) | shares	28,806
Weighted Average Exercise Price
Balance at beginning of period (in dollars per share) | $ / shares	$ 13.97
Options granted (in dollars per share) | $ / shares	23.43
Options exercised (in dollars per share) | $ / shares	33.66
Options cancelled (in dollars per share) | $ / shares	26.53
Balance at end of period (in dollars per share) | $ / shares	15.09	$ 13.97
Vested and exercisable at end of period (in dollars per share) | $ / shares	12.17
Vested and expected to vest at end of period (in dollars per share) | $ / shares	$ 15.09
Weighted Average Remaining Contractual Life (years)
Balance at beginning of period	5 years 2 months 23 days	5 years 8 months 4 days
Balance at end of period	5 years 2 months 23 days	5 years 8 months 4 days
Vested and exercisable at end of period	4 years 9 months 10 days
Vested and expected to vest at end of period	5 years 2 months 23 days
Aggregate Intrinsic Value
Balance at beginning of period | $	$ 468,385	$ 268,167
Balance at end of period | $	468,385	$ 268,167
Vested and exercisable at end of period | $	455,027
Vested and expected to vest at end of period | $	$ 468,385