Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Nov. 27, 2020 USD ($) period shares	Oct. 31, 2024 USD ($) $ / shares	Oct. 31, 2023 USD ($)	Oct. 31, 2024 USD ($) $ / shares shares	Oct. 31, 2023 USD ($) shares	May 01, 2024	Apr. 30, 2024 USD ($)	Jul. 31, 2022 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		$ 57,038	$ 53,169	$ 111,721	$ 104,049
Risk-free interest rate				3.60%	4.70%
Expected dividend yield				0.00%	0.00%
Expected volatility				66.20%	62.30%
Accrued stock-settled bonus		27,792		$ 27,792			$ 31,194
Accrued stock-settled bonus, noncurrent		10,500		10,500
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		74,800		$ 74,800
Unrecognized compensation cost, weighted-average recognition period				2 years 2 months 12 days
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				5 years
Unrecognized compensation cost, weighted-average recognition period				3 years 8 months 12 days
Unrecognized stock-based compensation expense		$ 473,900		$ 473,900
Granted, non-option (in shares) | shares				7,569,000
RSUs | Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentages				20.00%
Vesting period				1 year
RSUs | Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentages				5.00%
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum shares authorized (in shares) | shares								1,700,000
Total stock-based compensation expense				$ 2,400
Stock price (in dollars per share) | $ / shares		$ 12.90		$ 12.90
Risk-free interest rate				3.70%
Expected dividend yield				0.00%
Expected volatility				51.40%
2020 Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (in years)				10 years
2020 Incentive Plan | Stock options | Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentages				20.00%
Vesting period				1 year
2020 Incentive Plan | Stock options | Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentages				2.00%
Vesting period				4 years
2020 Employee Stock Purchase Plan | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense				$ 2,300	$ 3,100
Expected dividend yield				0.00%	0.00%
Unrecognized stock-based compensation expense		$ 8,200		$ 8,200
Percentage of employee earnings participation (up to)	15.00%
Initial offering period (in months)	24 months
Number of purchase periods | period	4
Purchase period (in months)	6 months
Annual Bonus Program And Retention Bonus Program | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense				$ 25,800
Common Class A and Common Class B | 2020 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Automatic increase to shares reserved for future issuance, percent of total shares						7.00%
Common Class A and Common Class B | 2020 Employee Stock Purchase Plan | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Automatic increase to shares reserved for future issuance, percent of total shares						1.00%
Class A Common Stock | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, non-option (in shares) | shares				750,591	532,842
Class A Common Stock | 2020 Employee Stock Purchase Plan | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares) | shares	3,000,000
Shares purchased (in shares) | shares	2,500
Shares purchased	$ 25
Fair market value (as a percent)	85.00%