Stockholders' Equity - RSU Activity (Details) - RSUs shares in Thousands |
3 Months Ended |
|---|---|
|
Apr. 30, 2019
$ / shares
shares
| |
| Number of Units | |
| Unvested at beginning of period (in shares) | shares | 17,142 |
| Granted (in shares) | shares | 1,174 |
| Vested (in shares) | shares | (2,468) |
| Canceled (in shares) | shares | (821) |
| Unvested at end of period (in shares) | shares | 15,027 |
| Weighted-Average Grant Date Fair Value | |
| Unvested at beginning of period (in usd per share) | $ / shares | $ 34.56 |
| Granted (in usd per share) | $ / shares | 55.42 |
| Vested (in usd per share) | $ / shares | 20.72 |
| Canceled (in usd per share) | $ / shares | 37.23 |
| Unvested at end of period (in usd per share) | $ / shares | $ 38.32 |