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	9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share Basic [Line Items]
Outstanding stock options	104,083,018	79,701,037
ESPP [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	3,713,166	0
Stock Option Activity [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	69,089,621	66,252,927
Restricted Stock Units [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	27,745,454	9,701,083
Shares subject to vesting [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	2,810,271	3,747,027
Liability RSU awards [Member]
Earnings Per Share Basic [Line Items]
Outstanding stock options	724,506	0