Net Loss Per Share - Additional Information (Details)		12 Months Ended
	Jun. 10, 2020 shares	Jan. 31, 2022 vote $ / shares	Jul. 31, 2019 $ / shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Initial conversion price (in dollars per share)		$ 211.20	$ 68.15
Class A Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Number of votes	1	1
Class B Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Number of votes	10	10