Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, shares in Thousands		1 Months Ended		12 Months Ended
	Oct. 18, 2021 USD ($)	Sep. 30, 2021 target period	May 31, 2021 target $ / shares shares	Jan. 31, 2022 USD ($) reporting_unit obligation segment shares	Jan. 31, 2021 USD ($) shares	Jan. 31, 2020 USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Foreign exchange gains (losses)				$ (29,100,000)	$ 23,400,000	$ (4,900,000)
Foreign currency translation adjustments				27,639,000	(24,005,000)	4,165,000
Restricted cash				2,500,000
Allowance for doubtful accounts				$ 1,098,000	1,022,000
Number of performance obligations | obligation				2
Deferred revenue recognized				$ 87,100,000	58,100,000	29,200,000
Remaining performance obligation				$ 312,400,000	159,900,000
Deferred contract acquisition cost, term				3 years
Advertising expenses				$ 21,400,000	14,100,000	17,200,000
Award vesting period (in years)				4 years
Number of operating segments | segment				1
Number of reporting units | reporting_unit				1
Intangible assets acquired, useful life				3 years
Goodwill impairment				$ 0	0	0
Payments of deferred offering costs	$ 4,700,000			$ 4,667,000	$ 0	$ 0
Internal-use software
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Property and equipment, useful life				5 years
Computers
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Property and equipment, useful life				2 years
Minimum
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Allocation of price (as a percet)				1.00%
Maximum
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Allocation of price (as a percet)				15.00%
RSUs
Error Corrections and Prior Period Adjustments Restatement [Line Items]
RSUs granted in period (in shares) | shares				3,290	0
Shares subject to the 2021 ESPP | 2021 Employee Stock Purchase Plan
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Look-back period (in months)		27 months
Number of purchase periods | period		4
Purchase period (in months)		6 months
Discount rate (as a percent)		15.00%
Chief Executive Officer | RSUs
Error Corrections and Prior Period Adjustments Restatement [Line Items]
RSUs granted in period (in shares) | shares			3,000
Number of threshold stock price targets | target		8	8
Chief Executive Officer | RSUs | Minimum
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Threshold stock price target (in USD per share) | $ / shares			$ 95
Chief Executive Officer | RSUs | Maximum
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Threshold stock price target (in USD per share) | $ / shares			$ 500
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-02-01
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Remaining performance obligation, percentage				65.00%
Period of expected satisfaction (in months)				12 months
One Distribution Channel | Accounts Receivable | Credit Concentration Risk
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Concentration risk, percentage				14.00%