Revenue Recognition - Deferred Contract Acquisition Costs (Details) - USD ($) $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
Jan. 31, 2021 |
Jan. 31, 2020 |
Jan. 31, 2019 |
Jan. 31, 2021 |
Jan. 31, 2020 |
|
| Capitalized Contract Cost, Net | |||||
| Beginning balance | $ 91,130 | $ 55,516 | |||
| Additions to deferred contract acquisition costs | 307,068 | 72,715 | |||
| Amortization of deferred contract acquisition costs | (104,306) | (37,101) | $ (20,839) | ||
| Ending balance | 293,892 | 91,130 | 55,516 | ||
| Deferred contract acquisition costs, current | $ 136,630 | $ 44,885 | |||
| Deferred contract acquisition costs, noncurrent | 157,262 | 46,245 | |||
| Total deferred contract acquisition costs | $ 91,130 | $ 91,130 | $ 55,516 | $ 293,892 | $ 91,130 |