Stock-based Compensation - Additional Information (Details)						1 Months Ended		3 Months Ended				6 Months Ended		9 Months Ended
	Jan. 21, 2022 shares	Nov. 22, 2021 shares	Sep. 20, 2021 shares	Apr. 23, 2021 $ / shares shares	Jan. 28, 2021 RelatedParties $ / shares shares	Apr. 30, 2021 USD ($)	Feb. 28, 2021 USD ($)	Jun. 30, 2022 USD ($) shares	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($) shares	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) shares	Sep. 30, 2021	Jan. 01, 2022 shares
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation												$ 29,832,000	$ 17,777,000
Number of related party | RelatedParties					2
Stock options issuance date					Jan. 28, 2021
Award granted | shares												1,142,027
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period												10 years
Unrecognized Stock Based Compensation Expense												$ 32,800,000
Stock-based compensation								$ 12,791,000		$ 7,444,000		29,832,000	17,777,000
Stock Based Compensation Expense Modification Related									$ 1,400,000
Compensation cost												1,200,000
Cash Purchase Price Per Share | $ / shares				$ 5.66
Unvested aggregate intrinsic value								1,037,708,000				$ 1,037,708,000
Series C Preferred Stock [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Cash Purchase Price Per Share | $ / shares					$ 6.62
Stock-Based Awards [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Weighted average period expected to be recognized												3 years
Unrecognized Stock Based Compensation Expense												$ 119,100
Restricted Stock Units (RSUs) [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total fair value as of the respective vesting dates of restricted stock units vested												$ 4,900
Shares vested, Grant date fair value | $ / shares												$ 8.76
Unvested aggregate intrinsic value								20,300,000				$ 20,300,000
Performance Based Stock Option [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Vesting periods												5 years
Unrecognized share based compensation expense												$ 9,000,000.0
Vesting Percentage												20.00%
Stock-based compensation												$ 4,100,000
PSUs [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award granted | shares	52,355	523,557
Number of shares issued to employees | shares		1,047,115
Description of PSUs vesting period									PSUs are subject to certain performance-based and service-based vesting conditions and would vest over four years with 25% of awards vesting on July 1, 2022, and the remaining 75% vesting quarterly over the remaining 12 quarters beginning on November 15, 2022, only for the portion of PSUs that is eligible to become vested which will be determined based upon timely satisfaction of performance conditions.
Compensation cost								300,000
Employee [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total fair value as of the respective vesting dates of restricted stock units vested							$ 206,250,000
Executive Officer
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total fair value as of the respective vesting dates of restricted stock units vested						$ 1,900,000,000
Executive Officer | Restricted Stock Units (RSUs) [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award granted | shares			3,972,185
Executive Officer | Performance Based Stock Option [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award granted | shares			13,016,178
Executive Officer | Time Based Stock Options [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award granted | shares			3,426,094
Chief Executive Officer [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based accelerated vesting stock options | shares				2,534,793	3,775,879
Chief Financial Officer [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based accelerated vesting stock options | shares				1,500,000
Chief Business Officer [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based accelerated vesting stock options | shares				400,000
Chief Technology Officer [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based accelerated vesting stock options | shares				865,560	2,265,529
General and Administrative Expense [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation								$ 6,086,000		$ 7,277,000		14,570,000	14,419,000
2016 Equity Incentive Plan [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation													$ 7,200,000
2021 Omnibus Incentive Plan [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Increase in number of common shares reserved for future issuance | shares										6			6		13,100,000
Percentage of Sum of Number of Shares													5.00%
Remain available for issuance												20,500
2021 Omnibus Incentive Plan [Member] | Common Class A [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance | shares										36,800,000			36,800,000
2021 Omnibus Incentive Plan [Member] | PSUs [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Number of shares issued to employees | shares		1,047,115
2021 Omnibus Incentive Plan [Member] | Minimum [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award Issuance Year														2023
2021 Omnibus Incentive Plan [Member] | Maximum [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award Issuance Year														2031
2021 Employee Stock Purchase Plan [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Increase in number of common shares reserved for future issuance | shares															2,600,000
Percentage of Sum of Number of Shares													1.00%
Remain available for issuance												$ 7,500,000
Eligible Employees Shares Offering Period													24 months
Discount on Shares Purchased													15.00%
Shares Issued | shares								0.2				0.2
Unrecognized Stock Based Compensation Expense												$ 1,500,000
Cost Over Weighted Average Period												1 year 1 month 2 days
2021 Employee Stock Purchase Plan [Member] | Common Class A [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance | shares										5,000,000.0			5,000,000.0
2021 Employee Stock Purchase Plan [Member] | Minimum [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award Issuance Year														2023
2021 Employee Stock Purchase Plan [Member] | Maximum [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Award Issuance Year														2031
Secondary Sales [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation											$ 8,200,000