Revenue, Deferred Revenue and Remaining Performance Obligations - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2021 |
Jul. 31, 2020 |
Jul. 31, 2021 |
Jul. 31, 2020 |
|
| Contract with Customer, Liability [Line Items] | ||||
| Revenue included in the contract liability balance | $ 281,400,000 | $ 165,100,000 | $ 447,200,000 | $ 261,900,000 |
| Commission amortization period | 4 years | |||
| Professional services contract amortization | 6 months | |||
| Impairment loss | $ 0 | $ 0 | $ 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 | |||