Net Loss per Share Attributable to Common Stockholders - Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share (Details) - Class A Common Stock [Member] - shares	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share Basic [Line Items]
Outstanding stock options	114,127,969	101,792,006
ESPP [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	2,776,927	3,456,238
Stock Option Activity [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	68,386,690	71,980,548
Restricted Stock Units [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	42,629,558	23,076,570
Shares Subject to Vesting [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	334,794	3,278,650