Revenue, Deferred Revenue and Remaining Performance Obligations - Deferred Contract Acquisition Costs (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jul. 31, 2021 |
Jul. 31, 2020 |
Jul. 31, 2021 |
Jul. 31, 2020 |
Jan. 31, 2021 |
|
| Movement in Deferred Contract Acquisition Costs [Roll Forward] | |||||
| Beginning balance | $ 210,780 | $ 123,318 | $ 198,756 | $ 114,206 | |
| Capitalization of contract acquisition costs | 51,176 | 26,425 | 87,576 | 48,988 | |
| Amortization of deferred contract acquisition costs | (26,043) | (14,720) | (50,419) | (28,171) | |
| Ending balance | 235,913 | 135,023 | 235,913 | 135,023 | |
| Deferred contract acquisition costs, current | 95,470 | 53,837 | 95,470 | 53,837 | $ 80,850 |
| Deferred contract acquisition costs, noncurrent | 140,443 | 81,186 | 140,443 | 81,186 | 117,906 |
| Total deferred contract acquisition costs | $ 235,913 | $ 135,023 | $ 235,913 | $ 135,023 | $ 198,756 |