Stockholders' Equity - Summary of Stock Equity Award Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Share-Based Payment Arrangement [Abstract]
Shares Available for Grant, Beginning Balance	32,797,245
Shares Available for Grant, Increase in authorized shares	13,590,094
Shares Available for Grant, Stock options forfeited or expired	2,308,582
Shares Available for Grant, Repurchases of unvested common stock	130,845
Shares Available for Grant, RSUs granted	(12,688,748)
Shares Available for Grant, RSUs Forfeited or Cancelled	644,169
Shares Available for Grant, Ending Balance	36,782,187	32,797,245
Outstanding Stock Options, Beginning Balance	61,926,383
Outstanding Stock Options, Stock options exercised	(7,695,923)
Outstanding Stock Options, Ending Balance	51,921,878	61,926,383
Outstanding Stock Options, Vested	24,848,276
Outstanding Stock Options, Vested and expected to vest	51,921,878
Weighted-Average Exercise Price, Beginning Balance | $ / shares	$ 6.97
Weighted-Average Exercise Price, Stock options exercised | $ / shares	3.31
Weighted-Average Exercise Price, Stock options forfeited or expired | $ / shares	8.52
Weighted-Average Exercise Price, Ending Balance | $ / shares	7.44	$ 6.97
Weighted-Average Exercise Price, Vested | $ / shares	5.31
Weighted-Average Exercise Price, Vested and Expected to Vest | $ / shares	$ 7.44
Weighted-Average Remaining Contractual Term (in years)	7 years 6 months 10 days	7 years 10 months 17 days
Weighted-Average Remaining Contractual Term Vested (in years)	6 years 11 months 26 days
Weighted-Average Remaining Contractual Term Vested and expected to vest (in years)	7 years 6 months 10 days
Aggregate Intrinsic Value, Beginning Balance | $	$ 4,289,643
Aggregate Intrinsic Value, Ending Balance | $	820,908	$ 4,289,643
Aggregate Intrinsic Value, Vested as of June 30, 2022 | $	445,825
Aggregate Intrinsic Value, Vested and expected to vest as of June 30, 2022 | $	$ 820,908