Revenue, Deferred Revenue and Remaining Performance Obligations - Additional Information (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Apr. 30, 2021 |
Apr. 30, 2020 |
|
| Contract with Customer, Liability [Line Items] | ||
| Revenue included in the contract liability balance | $ 244,300,000 | $ 141,500,000 |
| Commission amortization period | 4 years | |
| Professional services contract amortization | 6 months | |
| Impairment loss | $ 0 | $ 0 |
| Minimum | ||
| Contract with Customer, Liability [Line Items] | ||
| Payment terms | 30 days | |
| Subscription term | 1 year | |
| Maximum | ||
| Contract with Customer, Liability [Line Items] | ||
| Payment terms | 60 days | |
| Subscription term | 3 years | |