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Net Loss Per Share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 31, 2022	Jul. 31, 2022	Apr. 30, 2022	Oct. 31, 2021	Jul. 31, 2021	Apr. 30, 2021	Oct. 31, 2022	Oct. 31, 2021
Numerator:
Net loss	$ (84,841)	$ (118,865)	$ (77,294)	$ (81,293)	$ (77,133)	$ (63,992)	$ (281,000)	$ (222,418)
Denominator:
Weighted-average shares used to compute net loss per share, basic and diluted	68,916,813			66,386,379			68,325,990	63,750,884
Net loss per share, basic and diluted (in dollars per share)	$ (1.23)			$ (1.22)			$ (4.11)	$ (3.49)

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