Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 27, 2020 USD ($) period shares	Apr. 30, 2025 USD ($) $ / shares shares	Apr. 30, 2024 USD ($) $ / shares shares	Apr. 30, 2023 USD ($) $ / shares shares	May 01, 2023	Jul. 31, 2022 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value for options granted (in dollars per share) | $ / shares		$ 13.49	$ 16.70	$ 7.88
Stock options exercised, total intrinsic value		$ 94,100	$ 89,700	$ 24,400
Stock options vested, total grant date fair value		34,700	34,700	49,900
Stock-based compensation expense		$ 230,988	$ 215,761	$ 216,542
Risk-free interest rate		3.60%	4.10%	3.90%
Expected dividend yield		0.00%	0.00%	0.00%
Expected volatility		66.20%	63.20%	46.30%
Accrued bonus		$ 37,500	$ 31,200
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		$ 56,100	$ 79,600
Unrecognized compensation cost, weighted-average recognition period (in years)		2 years	2 years 2 months 12 days
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, weighted-average recognition period (in years)		3 years 8 months 12 days	3 years 8 months 12 days
Vesting period (in years)		5 years
Stock-based compensation expense		$ 142,200	$ 130,600	$ 134,800
Unrecognized stock-based compensation expense, non-options		$ 562,900	$ 422,600
Granted, non-option (in shares) | shares		14,731,000	8,422,000
RSUs | Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		1 year
Vesting percentages		20.00%
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]
Stock-based compensation expense		$ 3,800	$ 5,400	2,100
Maximum shares authorized (in shares) | shares						1,700,000
Share price (in dollars per share) | $ / shares		$ 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 period (in years)		1 year
Vesting percentages		20.00%
2020 Incentive Plan | Stock options | Share-based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		4 years
Vesting percentages		2.00%
2020 Employee Stock Purchase Plan | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 6,900	$ 5,400	$ 3,700
Expected dividend yield		0.00%	0.00%	0.00%
Unrecognized stock-based compensation expense, non-options		$ 11,200	$ 2,700
Percentage of employee earnings participation (not exceeding)	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]
Stock-based compensation expense		$ 41,900	$ 38,800
Common Class A And Common Class B | 2020 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares) | shares		6,225,512
Automatic increase to shares reserve for future issuance, percent of total shares outstanding			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 reserve for future issuance, percent of total shares outstanding					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		751,927	532,842
Class A Common Stock | 2020 Employee Stock Purchase Plan | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares) | shares		5,588,711	5,049,150
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%
Number of shares purchased (in shares) | shares		697,498	863,412	310,784