Stock-Based Compensation - Employee Stock Purchase Plan Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 29, 2021	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020	Jul. 31, 2021	Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)		85,702,868		85,702,868			212,779,276
Share price (in USD per share)						$ 35
Share-based payment arrangement, expense		$ 27,362	$ 4,595	$ 62,192	$ 9,834
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	7,056,319
Expiration period	10 years
Percentage of outstanding stock, maximum	1.00%
Consecutive offering period	6 months
Consecutive purchase period	6 months
Maximum employee subscription rate	85.00%
Lookback period	24 months
Share-based payment arrangement, expense		2,200		3,200
Amount withheld for future purchases		$ 7,700		$ 7,700
Shares purchased for award (in shares)		0		0