Description of Business and Basis of Presentation (Details) - USD ($)		1 Months Ended	12 Months Ended
	Feb. 26, 2021	Feb. 28, 2021	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020	Oct. 31, 2021	Jul. 31, 2021	Apr. 30, 2021	Jan. 31, 2019
Class of Warrant or Right [Line Items]
Accumulated deficit			$ (811,655,000)	$ (679,414,000)
Proceeds from merger			511,646,000	0	$ 0
Issuance costs					100,000
Issuance of Series H redeemable convertible preferred stock				95,456,000	14,756,000
Redeemable convertible preferred stock warrant liability			0	75,843,000
Cash, cash equivalents, and restricted cash			315,635,000	145,891,000	73,153,000				$ 205,698,000
Proceeds from merger		$ 484,100,000
Liquidation Preference			$ 0	710,347,000	$ 563,753,000
Previously Reported
Class of Warrant or Right [Line Items]
Liquidation Preference				$ 693,500,000		$ 17,493,000,000	$ 17,493,000,000	$ 17,493,000,000
Private Placement
Class of Warrant or Right [Line Items]
Number of shares sold (in shares)	22,500,000
Consideration received on sold shares	$ 225,000,000