Equity Incentive Plans and Stock-Based Compensation - Summary of the Restricted Stock Units (Details) - Restricted Stock Units	6 Months Ended
	Sep. 30, 2023 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested RSUs, beginning balance, Unvested as of March31, 2023 | shares	26,562,566
Unvested RSUs, Granted | shares	37,261,482
Unvested RSUs, Vested | shares	(15,190,229)
Unvested RSUs, Cancelled/forfeited | shares	(7,882,558)
Unvested RSUs ending balance unvested as of September 30, 2023 | shares	40,751,261
Weighted-Average Grant Date Fair Value Per Share, Beginning balance, Unvested as of March 31, 2023 | $ / shares	$ 4.73
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	1.96
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	2.95
Weighted-Average Grant Date Fair Value Per Share, Cancelled/forfeited | $ / shares	3.54
Weighted-Average Grant Date Fair Value Per Share, Ending balance, Unvested as of September 30, 2023 | $ / shares	$ 3.1