Summary of Significant Accounting Policies - Remaining Performance Obligations (Details) $ in Millions	9 Months Ended
Oct. 31, 2021 USD ($)
Minimum
Deferred Revenue Arrangement [Line Items]
Subscription term (in years)	1 year
Maximum
Deferred Revenue Arrangement [Line Items]
Subscription term (in years)	5 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-11-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue expected to be recognized from remaining performance obligations	$ 132.8
Revenue expected to be recognized from remaining performance obligations (as percent)	47.00%
Revenue expected to be recognized from remaining performance obligations (in months)	12 months

Revenue From Contract With Customer, Subscription Period

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+ References

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+ References

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

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- Definition

Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

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- Definition

Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

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